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University of Saskatchewan
1.
Rosser, Christine.
Effect of the maturity at harvest of whole-crop barley and oat on dry matter intake, forage selection, and digestibility when fed to beef cattle.
Degree: 2014, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2014-12-1880
► The objective of this research was to determine the effect of stage of maturity at the time of harvest for barley and oat whole-crop forage…
(more)
▼ The objective of this research was to determine the effect of stage of maturity at the time of harvest for barley and oat whole-crop forage on feed intake, ruminal fermentation and digestibility, and the impact forage allocation has on intake and ruminal fermentation. In the first 2 studies, whole-crop barley (Study 1; c.v. CDC Cowboy) and oat (Study 2; c.v. CDC Weaver) forage were harvested at the late milk (LM), hard dough (HD) and ripe (RP) stages and offered ad libitum to ruminally cannulated heifers. Diets were supplemented in an attempt to balance crude protein (CP) among treatments. Heifer performance, dry matter intake (DMI), ruminal fermentation parameters, ruminal digestibility, and total tract digestibility were evaluated. In Study 3, whole-crop oat (c.v. CDC Weaver) forage harvested at HD and RP was offered ad libitum to ruminally cannulated heifers in either daily (1-D) or 3 d (3-D) allocations. Dry matter intake and ruminal fermentation parameters were measured. In Study 1, harvest maturity of barley did not affect DMI (P = 0.70; average 5.4 kg/d) or average daily gain (ADG; P = 0.64). Total tract digestibility was decreased for barley harvested at HD (P = 0.003), but harvest maturity did not affect daily digestible energy (DE) intake (P = 0.52). Minimum ruminal pH for heifers fed the barley forage was lowest for LM (6.09), intermediate for RP (6.13), and greatest for HD (6.25; P = 0.016). Total short chain fatty acid (SCFA) concentrations were not affected by harvest maturity (P = 0.36). In Study 2, harvest maturity of whole-crop oat did not affect DMI (P = 0.26; average 8.1 kg/d) or ADG (P = 0.52). There were no effects of harvest maturity of oat forage on total tract digestibility (P = 0.78) or daily DE intake (P = 0.68). The minimum ruminal pH from heifers fed oat forage was lowest for HD (5.84; P = 0.012), intermediate for RP (5.94) and greatest for LM (5.99). There was no effect of harvest maturity of oat forage on total SCFA concentrations (P = 0.21). The quantity of forage allocation (Study 3) had no effect on total or forage DMI over a 3-d duration (P ≥ 0.47). Throughout the 3-d feeding period, 3-D allocated heifers had a reduction in the area pH was under 5.8 (214.4, 79.5 and 10.9 pH × min/d, for d 1, 2 and 3, respectively; P = 0.003). Total SCFA concentrations were not affected by forage allocation or harvest maturity (P ≥ 0.14), however there was an interaction of forage allocation and day in the feeding cycle (P = 0.046). Heifers allocated 1-D had no change
iii
in total SCFA concentration over the 3-d feeding period (averaged 122 mM), but 3-D allocation had elevated concentrations on d 1 (138 mM) intermediate on d 2 (135 mM) and decreased on d 3 (117 mM). These data suggest that harvesting barley and oat at the HD stage improves DM yield without negatively affecting cattle DMI and ADG. These data also suggest that providing 3-d allocations of forage does not affect DMI, but can increase daily fluctuations of ruminal pH and ruminal SCFA concentrations.
Advisors/Committee Members: Penner, Gregory B., Block, Hushton C., McKinnon, John J..
Subjects/Keywords: Allocation; Barley; Digestibility; Forage; Harvest maturity; Intake; Oat; Swathgrazing
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APA (6th Edition):
Rosser, C. (2014). Effect of the maturity at harvest of whole-crop barley and oat on dry matter intake, forage selection, and digestibility when fed to beef cattle. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2014-12-1880
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Rosser, Christine. “Effect of the maturity at harvest of whole-crop barley and oat on dry matter intake, forage selection, and digestibility when fed to beef cattle.” 2014. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2014-12-1880.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Rosser, Christine. “Effect of the maturity at harvest of whole-crop barley and oat on dry matter intake, forage selection, and digestibility when fed to beef cattle.” 2014. Web. 11 Apr 2021.
Vancouver:
Rosser C. Effect of the maturity at harvest of whole-crop barley and oat on dry matter intake, forage selection, and digestibility when fed to beef cattle. [Internet] [Thesis]. University of Saskatchewan; 2014. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2014-12-1880.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Rosser C. Effect of the maturity at harvest of whole-crop barley and oat on dry matter intake, forage selection, and digestibility when fed to beef cattle. [Thesis]. University of Saskatchewan; 2014. Available from: http://hdl.handle.net/10388/ETD-2014-12-1880
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
2.
Amat, Samat.
Evaluation of sulfur and thiamine metabolism, short chain fatty acid absorption, and mineral status in beef cattle fed high dietary sulfur.
Degree: 2012, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2012-12-838
► A small pen study, a metabolic trial and a field observation study were conducted to evaluate sulfur (S) and thiamine metabolism, short chain fatty acid…
(more)
▼ A small pen study, a metabolic trial and a field observation study were conducted to evaluate sulfur (S) and thiamine metabolism, short chain fatty acid (SCFA) absorption, and mineral status in beef cattle fed high dietary S. In the small pen study, the effect of feeding corn (CDDGS), wheat (WDDGS) or a 50:50 corn:wheat blend (BDDGS) dried distillers grains with solubles (DDGS) on serum sulfate level of feedlot steers was evaluated using 288 crossbred steers (273.9 ± 18.5kg) in a completely randomized design. The steers were backgrounded and finished. The control backgrounding diet consisted of 34.3% barley grain, 26.0% brome grass hay, 10.3% barley straw, 22.8% barley silage, and 6.7% supplement (DM). For the three treatment diets, 17% of the barley grain was replaced with DDGS. Sulfur concentrations of control, BDDGS, CDDGS and WDDGS diets in the backgrounding phase were 0.2, 0.23, 0.31 and 0.33% (DM), respectively. The control finishing diet was 86.8% barley grain, 5.8% supplement and 7.4% barley silage (DM), and the three DDGS treatments included replacement of 40% of barley grain with an equal amount of DDGS. The corresponding sulfur concentrations for control, BDDGS, CDDGS and WDDGS diets in were 0.2, 0.33, 0.51 and 0.65% (DM), respectively. Corn DDGS or WDDGS cattle exhibited higher (P < 0.01) serum sulfate levels than BDDGS or control cattle in both backgrounding and finishing phases. Mean serum sulfate concentrations in cattle fed WDDGS and CDDGS were lower (P < 0.01) in finishing phase relative to backgrounding phase despite the higher S intake (P < 0.01).
In the metabolic study, effects of dietary S concentration and forage-to-concentrate ratio (F:C) on S and thiamine metabolism, SCFA absorption, and mineral status were evaluated using 16 ruminally cannulated heifers (initial BW 628 ± 48 kg) in a randomized complete block design with a 2 × 2 factorial treatment arrangement with main effects of dietary S (LS = 0.3% vs. HS = 0.67%, DM) and F:C (Low F:C = 4% vs. High F:C = 51% barley silage, DM). There was no interaction between S concentration and the F:C. The HS cattle had reduced DMI (P < 0.001) and SCFA (acetate, propionate and butyrate) absorption (P < 0.05) but greater concentrations of ruminal hydrogen sulfide (H2S) (P < 0.01), serum sulfate (P < 0.01) and urinary sulfate (P < 0.01), as well as greater urinary sulfate excretion (P < 0.01) than LS cattle. Free thiamine, thiamine monophosphate (TMP) and thiamine pyrophosphate (TPP) concentrations in blood and rumen fluid did not vary (P > 0.05) among HS and LS cattle. Concentration of TPP was increased by 9.2% (P = 0.10) but with a concomitant numerical decrease in free thiamine in HS brains than LS brains. The HS brains had greater TMP (P = 0.01) and total thiamine (free thiamine + TMP + TPP) (P < 0.01) than LS brains. The HS cattle had reduced (P < 0.05) ruminal cobalt (Co), iron (Fe) and manganese (Mn) but similar (P > 0.05) copper (Cu), magnesium (Mg), molybdenum (Mo), selenium (Se) and zinc (Zn) relative to LS cattle. There were reduced…
Advisors/Committee Members: Hendrick, Steve, McKinnon, John J., Penner, Greg B., Stookey, Joe M..
Subjects/Keywords: Dietary sulfur; beef cattle; thiamine and its phosphate esters; forage-to-concentrate ratio; short chain fatty acid absorption; mineral status
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Amat, S. (2012). Evaluation of sulfur and thiamine metabolism, short chain fatty acid absorption, and mineral status in beef cattle fed high dietary sulfur. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2012-12-838
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Amat, Samat. “Evaluation of sulfur and thiamine metabolism, short chain fatty acid absorption, and mineral status in beef cattle fed high dietary sulfur.” 2012. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2012-12-838.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Amat, Samat. “Evaluation of sulfur and thiamine metabolism, short chain fatty acid absorption, and mineral status in beef cattle fed high dietary sulfur.” 2012. Web. 11 Apr 2021.
Vancouver:
Amat S. Evaluation of sulfur and thiamine metabolism, short chain fatty acid absorption, and mineral status in beef cattle fed high dietary sulfur. [Internet] [Thesis]. University of Saskatchewan; 2012. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2012-12-838.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Amat S. Evaluation of sulfur and thiamine metabolism, short chain fatty acid absorption, and mineral status in beef cattle fed high dietary sulfur. [Thesis]. University of Saskatchewan; 2012. Available from: http://hdl.handle.net/10388/ETD-2012-12-838
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
3.
Ying, Yuguang.
Nutritional and Microstructural Responses in Cereal Grains to Heat-Related Processing Methods.
Degree: 2015, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2015-10-2285
► Cereal grains share many common traits, but they also have different internal structures, nutrient values, degradation kinetics and digestion features. Heat treatments are commonly used…
(more)
▼ Cereal grains share many common traits, but they also have different internal structures, nutrient values, degradation kinetics and digestion features. Heat treatments are commonly used in the feed industry. It is known that heat is able to change the nutrient values of the feed but the effect could be equivocal. In order to understand the effects of heat processing on internal structure and nutrient availability of cereal grains, two batches of wheat, triticale and corn were divided into three groups (control/raw (unheated), dry heating and moist heating) and processed at 121 °C for 80 min. Basic chemical analysis and in situ, in vitro assays were conducted and CNCPS, DVE/OEB and NRC-2001 models were used to determine the nutrient availability of the grains. In addition, two mid-IR molecular spectroscopy techniques (Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) and Synchrotron Radiation Infrared Microspectroscopy (SR-IMS)) were used to gain an insight into the heat-induced changes in the functional groups.
Significant (P<0.05) differences were found between the cereal grains in their nutritional availabilities, including their chemical characteristics, protein and carbohydrate fractions, energy values, the ruminal degradation kinetics, hourly effective rumen degradation ratios, potential N-to-energy synchronization, and intestinal digestion of cereal grains. Compared to dry heating, moist heating had more impact on altering the nutrient profiles and showed the potential to increase the nutrient availability of wheat and triticale for dairy cattle. Significant differences (P<0.01) were detected between different feeds and heat treatment groups by using the ATR-FTIR technique. Results were found in consistency with the conventional chemical and animal studies mentioned above despite when using the SR-IMS technique. Significant (P<0.05) correlations were detected between some structure spectral characteristics and nutrient digestion traits.
In conclusion, the moist heating had more profound impact than the dry heating in increasing nutrient supplies to ruminants in wheat and triticale. The heat-induced effects found in corn were less positive. The ATR-FTIR technique could detect the internal structural changes in cereal grains, while the sensitivity and accuracy of the SR-IMS technique were not proved in this study.
Advisors/Committee Members: Yu, Peiqiang, Christensen, David A., McKinnon, John J., Mutsvangwa, Tim.
Subjects/Keywords: cereal grains; heat processing; mid-IR technique
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ying, Y. (2015). Nutritional and Microstructural Responses in Cereal Grains to Heat-Related Processing Methods. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2015-10-2285
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ying, Yuguang. “Nutritional and Microstructural Responses in Cereal Grains to Heat-Related Processing Methods.” 2015. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2015-10-2285.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ying, Yuguang. “Nutritional and Microstructural Responses in Cereal Grains to Heat-Related Processing Methods.” 2015. Web. 11 Apr 2021.
Vancouver:
Ying Y. Nutritional and Microstructural Responses in Cereal Grains to Heat-Related Processing Methods. [Internet] [Thesis]. University of Saskatchewan; 2015. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2015-10-2285.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ying Y. Nutritional and Microstructural Responses in Cereal Grains to Heat-Related Processing Methods. [Thesis]. University of Saskatchewan; 2015. Available from: http://hdl.handle.net/10388/ETD-2015-10-2285
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
4.
Girardin, Lynne.
Comparison of early (March) and late (June) calving systems on cow and pre-weaning calf performance and cost of production on western Canadian Prairies.
Degree: 2011, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2011-08-18
► A two-year study (2007, 2008) was conducted to evaluate the effects of two calving systems, early (March; Early Calving System (ECS)) vs. late (June; Late…
(more)
▼ A two-year study (2007, 2008) was conducted to evaluate the effects of two calving systems, early (March; Early Calving System (ECS)) vs. late (June; Late Calving System (LCS)) on cow, pre-weaning calf performance and feeding system management and costs. Both early and late calving systems were managed at three locations on the Canadian Prairies: Agriculture and Agri-food Canada (AAFC)-Brandon Research Centre (Brandon, Manitoba); AAFC-Semi arid Prairie Agricultural Research Centre (Swift Current, SK); and Western Beef Development Centre (Lanigan, SK). Four feeding management systems (drylot (DL), pasture (PG), swath-windrow (SG) and bale grazing (BG)) were utilized at all three locations to maximize grazing systems.
Management of animals through the four different feeding systems was found to meet or exceed protein and energy requirements according to NRC (2000). Differences in cow body weight (BW) (P=0.001; location) were observed across locations at pre-calving and weaning periods although there were no obvious patterns when comparing across calving systems. A significant three way interaction was observed for cow BW at breeding (P=0.003), and for cow body condition score (BCS) at breeding (P=0.002). Body condition score at breeding indicated there was a significant (P=0.002) three way interaction, where there were no significant interactions when comparisons across calving system within the same year (Y) and location (L) were performed for Brandon and Lanigan in 2007 and for Lanigan in 2008 also, therefore no improvements in one calving system compared to the other. At Brandon in 2007, ECS cow BCS were similar to LCS cows. In 2007 and 2008, the inverse occurred at SC where LCS cows had greater BCS compared to the ECS. The same two way (Calving System x Location) interaction was significant at pre-calving and weaning for both cow rib (P=0.003; P=0.007) and rump fat (P=0.002; P=0.02) where Lanigan had significantly lower rib and rump fat for the LCS as compared to the ECS. Rib and rump fat measurements did not follow a typical pattern. Fluctuations in body fat reserves varied depending on the calving system and location. Even though differences (P<0.05) occurred in cow BW and fat reserves, there was no significant difference (P>0.05) in reproductive performance between the two calving systems within the management of the current study. Pregnancy rate, calving rate, calving span and weaning rate were similar for both early and late calving systems.
In 2007, calf mortality on average was higher for LCS (5%) vs ECS (1.7%) and the inverse occurred in 2008, where LCS had lower calf mortalities than did ECS, 3.3% and 4%, respectively. Most calf mortalities were born dead or weak. There appeared to be no negative impact on calf mortality with early or late calving systems. A significant two way (Calving System x Year) interaction was observed for calf BW at birth (P=0.002) (Table 4.4). Treatment (Calving System) (P<0.0001) main effect was significant for ADG (Table 4.4). The average values for calf birth weights for…
Advisors/Committee Members: Lardner, Herbert A., Iwaasa, Alan D., McKinnon, John J., Hendrick, Steve, Schmutz, Sheila, Waldner, Cheryl.
Subjects/Keywords: calving; beef cow; calf performance; cow performance; calving season
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Girardin, L. (2011). Comparison of early (March) and late (June) calving systems on cow and pre-weaning calf performance and cost of production on western Canadian Prairies. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2011-08-18
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Girardin, Lynne. “Comparison of early (March) and late (June) calving systems on cow and pre-weaning calf performance and cost of production on western Canadian Prairies.” 2011. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2011-08-18.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Girardin, Lynne. “Comparison of early (March) and late (June) calving systems on cow and pre-weaning calf performance and cost of production on western Canadian Prairies.” 2011. Web. 11 Apr 2021.
Vancouver:
Girardin L. Comparison of early (March) and late (June) calving systems on cow and pre-weaning calf performance and cost of production on western Canadian Prairies. [Internet] [Thesis]. University of Saskatchewan; 2011. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2011-08-18.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Girardin L. Comparison of early (March) and late (June) calving systems on cow and pre-weaning calf performance and cost of production on western Canadian Prairies. [Thesis]. University of Saskatchewan; 2011. Available from: http://hdl.handle.net/10388/ETD-2011-08-18
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
5.
Refat, Basim 1987-.
MOLECULAR STRUCTURE FEATURES AND NUTRIENT AVAILABILITY AND UTILIZATION OF BARLEY SILAGE VARIETIES WITH VARYING DIGESTIBLE STRUCTURAL CARBOHYDRATE IN COMPARISON WITH A NEW SHORT-SEASON CORN SILAGE IN HIGH-PRODUCING DAIRY CATTLE.
Degree: 2018, University of Saskatchewan
URL: http://hdl.handle.net/10388/8499
► Barley silage is a main crop forage source that used by the dairy producer in Western Canada. There are many barley forage varieties that used…
(more)
▼ Barley silage is a main crop forage source that used by the dairy producer in Western Canada. There are many barley forage varieties that used for silage production. However, there is limited information in their nutritional characteristics and utilization in dairy cows, meanwhile new corn forages that developed to Western Canada that required less crop heat units to reach the maturity stage for silage production. The objectives of the Experiment 1 and 2 were: (1) to assess the magnitude of difference among barley silage varieties in comparison with short-season corn silage in terms of their chemical composition, energy values, protein and carbohydrates fractions, rumen degradation kinetics, and intestinal absorbed true protein supply to dairy cattle and (2) to define the interactive association between molecular structure of silages and carbohydrates or protein utilization in dairy cows. The two experiments were complete randomized design with four treatments: corn silage (P7213R), CDC Cowboy barley silage, CDC Copeland barley silage, and Xena barley silage. The barley silage varieties were selected based on varying rate of in vitro neutral detergent fiber digestibility (ivNDFD). Five cannulated lactating dairy cows were used for measuring in situ rumen degradation kinetics. Intestinal digestibility of rumen undegraded feed protein was estimated using three-step in vitro procedure. The protein and carbohydrates related-molecular structure spectral data was collected using attenuated total reflectance Fourier transform infrared (ATR-FT/IR) molecular vibrational spectroscopy. Corn silage showed the highest total digestible nutrient and energy content. Cowboy showed lower energy content and lower dry matter (DM) degradation in the rumen relative to other barley varieties. All studied silages exhibited the same level of metabolizable protein supply to dairy cows. Molecular structural analysis showed significant modifications in protein or carbohydrates related molecular spectral intensity. The protein structure α-helix to β-sheet ratio are correlated to total intestinally absorbed protein supply. The spectral intensities of carbohydrates were highly correlated with the digestible carbohydrate content of silages.
The objective of the Experiment 3 was to evaluate the effect of barely silage varieties selected for varying rates of ivNDFD on DM intake (DMI), milk production, and total chewing activity of high-yield dairy cows in compared with short-season corn silage. Four mid-lactating multiparous Holstein cows (DIM = 101 ± 25; parities = 2.75 ± 0.83) were used in a 4 × 4 Latin square design. The CDC Cowboy with higher ivNDFD did not result in improvements in milk yield, feed efficiency, or total chewing activity compared with other barley silage varieties. Cows fed P7213R corn silage-based diet tended to have higher DMI (28.1 vs. 25.7; P = 0.10) and produce more milk (40.1 vs. 35.3 kg/d; P = 0.01) than those fed barley silage-based diets. This implies that the cows fed corn silage-based diet improved feed efficiency…
Advisors/Committee Members: Yu, Peiqiang, McKinnon , John J, Christensen , David, Beattie , Aaron, Yang, WenZhu, Mutsvangwa , Tim.
Subjects/Keywords: barley silage; carbohydrate structure; corn silage; vibrational molecular spectroscopy
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Refat, B. 1. (2018). MOLECULAR STRUCTURE FEATURES AND NUTRIENT AVAILABILITY AND UTILIZATION OF BARLEY SILAGE VARIETIES WITH VARYING DIGESTIBLE STRUCTURAL CARBOHYDRATE IN COMPARISON WITH A NEW SHORT-SEASON CORN SILAGE IN HIGH-PRODUCING DAIRY CATTLE. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/8499
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Refat, Basim 1987-. “MOLECULAR STRUCTURE FEATURES AND NUTRIENT AVAILABILITY AND UTILIZATION OF BARLEY SILAGE VARIETIES WITH VARYING DIGESTIBLE STRUCTURAL CARBOHYDRATE IN COMPARISON WITH A NEW SHORT-SEASON CORN SILAGE IN HIGH-PRODUCING DAIRY CATTLE.” 2018. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/8499.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Refat, Basim 1987-. “MOLECULAR STRUCTURE FEATURES AND NUTRIENT AVAILABILITY AND UTILIZATION OF BARLEY SILAGE VARIETIES WITH VARYING DIGESTIBLE STRUCTURAL CARBOHYDRATE IN COMPARISON WITH A NEW SHORT-SEASON CORN SILAGE IN HIGH-PRODUCING DAIRY CATTLE.” 2018. Web. 11 Apr 2021.
Vancouver:
Refat B1. MOLECULAR STRUCTURE FEATURES AND NUTRIENT AVAILABILITY AND UTILIZATION OF BARLEY SILAGE VARIETIES WITH VARYING DIGESTIBLE STRUCTURAL CARBOHYDRATE IN COMPARISON WITH A NEW SHORT-SEASON CORN SILAGE IN HIGH-PRODUCING DAIRY CATTLE. [Internet] [Thesis]. University of Saskatchewan; 2018. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/8499.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Refat B1. MOLECULAR STRUCTURE FEATURES AND NUTRIENT AVAILABILITY AND UTILIZATION OF BARLEY SILAGE VARIETIES WITH VARYING DIGESTIBLE STRUCTURAL CARBOHYDRATE IN COMPARISON WITH A NEW SHORT-SEASON CORN SILAGE IN HIGH-PRODUCING DAIRY CATTLE. [Thesis]. University of Saskatchewan; 2018. Available from: http://hdl.handle.net/10388/8499
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
6.
Leao Guidotti, Elisabeth 1982-.
ESTABLISHMENT OF CARINATA MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE.
Degree: 2018, University of Saskatchewan
URL: http://hdl.handle.net/10388/8648
► The objective of this research was to evaluate the value of carinata meal (CRM) relative to canola meal (CM) when fed alone or in combination…
(more)
▼ The objective of this research was to evaluate the value of carinata meal (CRM) relative to canola meal (CM) when fed alone or in combination with wheat-dried distillers grains with solubles (WDDGS) on the performance of growing and finishing beef steers and rumen fermentation, total tract nutrient utilization, omasal flow and N efficiency of growing beef heifers. The first trial involved a 97-d backgrounding (BK) trial that used 360 calves (321.8 ± 0.10kg) assigned to one of 12 pens. Diets compared CRM relative to CM at two dietary inclusion levels (7.5 and 15% DM basis). The second trial was a finishing trial using 250 crossbred steers (418.7 ± 0.48 kg) assigned to 25 pens with five treatments: CRM (4.8% DM), CM (6% DM), WDDGS (6.2% DM), and CRM (2.7% DM) + WDDGS (2.7% DM) or CM (3% DM) + WDDGS (3% DM). Trial three designed as a Latin square, used 4 rumen-cannulated heifers (385.8 ± 27.95 kg) that were fed a barley-based BK diet supplemented with CRM (9.24% DM); CM (9.97% DM); CRM (4.98% DM) + WDDGS (5.03% DM) or CM (4.98% DM) + WDDGS (5.03% DM). In Trial 1 and 2, there were no differences (P > 0.05) between treatments for final shrunk BW or ADG, DMI and G:F. In trial 2, cattle fed CM had heavier hot carcass weights and a greater dressing percentage (DP) than those fed CRM diets. In Trial 3, apparent digestion of N tended (P = 0.09) to be greater for CRM and CM diets relative to WDDGS diets. The inclusion of WDDGS increased (P = 0.04) N truly digested in the rumen, and decreased ruminal non- ammonia nitrogen (NAN) flow. No treatment differences (P > 0.05) were noted in total bacterial NAN flow or in microbial efficiency. Carinata meal is equal to CM as a protein source for beef cattle without affecting performance, rumen fermentation, total tract nutrient utilization, and N efficiency. However, HCW and DP were greater in cattle fed CM relative to those fed CRM. There was no benefit to adding WDDGS as a rumen undegradable protein source.
Advisors/Committee Members: McKinnon, John J, Penner , Gregory B, Christensen, David A, Yu, Peiqiang, Buchanan, Fiona C, Erickson, Nathan.
Subjects/Keywords: carinata meal; canola meal; wheat-dried distillers’grains with solubles; feedlot; performance; carcass characteristics; rumen fermentation; omasal flow; microbial protein synthesis; digestibility
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APA (6th Edition):
Leao Guidotti, E. 1. (2018). ESTABLISHMENT OF CARINATA MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/8648
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Leao Guidotti, Elisabeth 1982-. “ESTABLISHMENT OF CARINATA MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE.” 2018. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/8648.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Leao Guidotti, Elisabeth 1982-. “ESTABLISHMENT OF CARINATA MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE.” 2018. Web. 11 Apr 2021.
Vancouver:
Leao Guidotti E1. ESTABLISHMENT OF CARINATA MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE. [Internet] [Thesis]. University of Saskatchewan; 2018. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/8648.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Leao Guidotti E1. ESTABLISHMENT OF CARINATA MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE. [Thesis]. University of Saskatchewan; 2018. Available from: http://hdl.handle.net/10388/8648
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
7.
Sutherland, Brittney.
Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Barley and Corn Grain to Backgrounding Beef Cattle.
Degree: 2020, University of Saskatchewan
URL: http://hdl.handle.net/10388/12821
► The objective of this study was to determine the effect of either barley (BS) or corn (CS) silage fed with dry-rolled barley (BG), dry-rolled corn…
(more)
▼ The objective of this study was to determine the effect of either barley (BS) or corn (CS) silage fed with dry-rolled barley (BG), dry-rolled corn (CG), or a blend of barley and corn grain (BCG) on predicted nutrient digestibility and growth performance of backgrounding cattle (Study 1) and dry matter intake, ruminal fermentation, total tract digestibility and nitrogen balance (Study 2).In study 1, Steers (n = 288) were stratified by BW into 24 pens and pens were randomly assigned to one of six treatments (n = 4) in a two three factorial design. For Study 2 five ruminally cannulated heifers were used in an incomplete 6 6 Latin square design. Periods were 25-d including five days of dietary transition, 13 days of dietary adaptation, and seven days of sample collection. Treatments contained (DM basis) either BS or CS included at 55% in combination with 30% BG, CG, or BCG, 8% canola meal, varying amounts of urea to balance CP, and 5% of a mineral and vitamin supplement. There were no interactions among silage or grain source and no differences in ADG (1.01 kg/d) or G:F (0.10 kg/kg) among diets. However, DMI was 0.8 kg/d greater for steers fed CS (P = 0.018) than BS. Final BW was 8.4 kg greater for steers fed CS (P = 0.004) compared to steers fed BS. Fecal starch was greatest for CG, intermediate for BCG, and least for BG (P < 0.01). Whole barley kernels appearing in feces were greatest in BG compared to BCG while partial corn kernels in feces were greater in CG compared BCG (P < 0.01). Fine fibre particles in feces were greatest in BG diets with CG and BCG being least (P < 0.01 In study 2 Acetate concentrations were greatest for the CG and BCG diets (P < 0.01) while propionate was greatest for BS-BG and the least for CS-BCG (P < 0.05). Rumen ammonia concentrations were greatest for CG treatments (P < 0.01). Barley grain had greater DM, OM, starch and GE digestibility comparted to CG with BCG being intermediate (P < 0.05). Fecal nitrogen excretion was greatest for cattle fed CS (P < 0.05) as wells as for CG (P < 0.01). Use of CS improved DMI, ending BW and nutrient digestibility; while dry-rolled BG improved nutrient digestibility and reduced fecal starch concentration as compared to CG or BCG in diets for backgrounding cattle.
Advisors/Committee Members: Penner, Gregory B, McKinnon, John J, McAllister, Tim A, Caton, Joel, Buchanan, Fiona C.
Subjects/Keywords: short-season corn; starch
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APA ·
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APA (6th Edition):
Sutherland, B. (2020). Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Barley and Corn Grain to Backgrounding Beef Cattle. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/12821
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sutherland, Brittney. “Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Barley and Corn Grain to Backgrounding Beef Cattle.” 2020. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/12821.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sutherland, Brittney. “Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Barley and Corn Grain to Backgrounding Beef Cattle.” 2020. Web. 11 Apr 2021.
Vancouver:
Sutherland B. Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Barley and Corn Grain to Backgrounding Beef Cattle. [Internet] [Thesis]. University of Saskatchewan; 2020. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/12821.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sutherland B. Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Barley and Corn Grain to Backgrounding Beef Cattle. [Thesis]. University of Saskatchewan; 2020. Available from: http://hdl.handle.net/10388/12821
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
8.
Johnson, Jordan A 1995-.
Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Corn and Barley Grain for Finishing Beef Cattle.
Degree: 2019, University of Saskatchewan
URL: http://hdl.handle.net/10388/12447
► ABSTRACT The objectives of the current studies were to evaluate the effects of silage (S) and cereal grain (G) source and their interaction (S ×…
(more)
▼ ABSTRACT
The objectives of the current studies were to evaluate the effects of silage (S) and cereal grain (G) source and their interaction (S × G) on growth performance, digestibility, and carcass characteristics (Study 1) and dry matter intake, ruminal fermentation, total-tract digestibility, and nitrogen balance (Study 2) for finishing beef cattle. For Study 1, 288 steers weighing 465 ± 28 kg were randomly assigned to 1 of 24 pens (12 steers/pen) in an 89-d finishing study. Study 2 used five ruminally cannulated heifers in an incomplete 6 × 6 Latin square design. Periods were 25-d in duration with 5 d of diet transition, 13 d of dietary adaptation, and 7 d of sample collection. Dietary treatments for both studies included corn silage (CS) or barley silage (BS) at 8% of DM. Within each silage source, diets contained dry-rolled barley grain (BG; 86% of DM), dry-rolled corn grain (CG; 85% of DM), or an equal blend of barley and corn grain (BCG; 85% of DM). In Study 1, there were no interactions between silage and cereal grain source (P ≥ 0.10). Feeding CG increased (G, P < 0.01) DMI by 0.8 and 0.6 kg/d relative to BG and BCG, respectively. Gain-to-feed was greater (G, P = 0.04) for BG (0.17 kg/kg) than CG (0.16 kg/kg), but not different from BCG (0.17 kg/kg). Furthermore, average daily gain (2.07 kg/d) and final body weight were not different among treatments (P > 0.05). Hot carcass weight was 6.2 kg greater (372.2 vs. 366.0 kg; S, P < 0.01) and dressing percent was 0.57% greater (59.53 vs. 58.96 %; S, P = 0.04) for steers fed CS than BS, respectively. In Study 2, DM intake and mean pH were not affected by diet. Total SCFA concentrations were greater for BCG than BG or CG (G, P < 0.01) and for CS (S, P < 0.01) relative to BS. Molar proportion of acetate was increased for BS-BG and BS-CG (S × G, P < 0.01), while molar proportion of propionate was greatest for CS-BG (S × G, P < 0.01). Rumen ammonia-nitrogen concentrations were greatest for CG (G, P < 0.001), and higher for CS than BS (S, P = 0.02). Apparent total-tract digestibility of DM, OM, aNDFom, starch and gross energy were greatest for BG (G, P ≤ 0.04). Dietary digestible energy content (Mcal/kg) was greatest for BG treatments (G, P = 0.03). Total nitrogen retention (g/d and % of intake) was greatest for CS-BG (S × G, P ≤ 0.03). The potentially degradable fraction of DM, CP, and starch were greater for CG (P ≤ 0.03) than BG. For silage sources, CS had greater 24, 48 and 72-h starch digestibility (P ≤ 0.03) relative to BS. These results indicate that feeding dry-rolled BG may improve performance and digestibility when compared to CG and BCG and CS may provide benefits over BS. Improvements related to feeding BG and CS may be due to greater propionate production, improved nutrient digestibility, and greater N retention.
Advisors/Committee Members: Penner, Greg B, McAllister, Tim A, McKinnon, John J, Van Emon, Megan L, Brook, Ryan K.
Subjects/Keywords: corn; barley; carcass quality; finishing; beef cattle; silage; grain
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Johnson, J. A. 1. (2019). Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Corn and Barley Grain for Finishing Beef Cattle. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/12447
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Johnson, Jordan A 1995-. “Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Corn and Barley Grain for Finishing Beef Cattle.” 2019. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/12447.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Johnson, Jordan A 1995-. “Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Corn and Barley Grain for Finishing Beef Cattle.” 2019. Web. 11 Apr 2021.
Vancouver:
Johnson JA1. Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Corn and Barley Grain for Finishing Beef Cattle. [Internet] [Thesis]. University of Saskatchewan; 2019. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/12447.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Johnson JA1. Barley Silage or Corn Silage Fed in Combination with Barley Grain, Corn Grain, or a Blend of Corn and Barley Grain for Finishing Beef Cattle. [Thesis]. University of Saskatchewan; 2019. Available from: http://hdl.handle.net/10388/12447
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
9.
Hamilton, Kelsey Evelyn 1994-.
A Nutrigenomic Perspective to Search for Gene Variants That Influence Carcass Traits of Feedlot Cattle.
Degree: 2019, University of Saskatchewan
URL: http://hdl.handle.net/10388/11739
► min A (VA) has a nutrigenomic effect on intramuscular fat. Discovering variants in genes involved in fat deposition that are also affected by vitamin A…
(more)
▼ min A (VA) has a nutrigenomic effect on intramuscular fat. Discovering variants in genes involved in fat deposition that are also affected by vitamin A could allow feedlots to precision feed to optimize carcass traits. A single nucleotide polymorphism (SNP) in alcohol dehydrogenase 1C (ADH1C) has previously shown promise for this approach but has yet to be effective at a commercial level; therefore we hypothesized a variant in another gene or its interaction with ADH1Cc.-64T>C might be the solution. Genes previously shown to be affected by retinoic acid, a metabolite of vitamin A: aminopeptidase (ANPEP), clusterin (CLU), adipose differentiation-related protein (ADFP), glutathione peroxidase (GPX3), secreted protein, acidic, cysteine-rich (SPARC), and insulin growth factor binding protein 6 (IGFBP6) were sequenced and screened for variants. The ANPEPc.410G>A SNP was selected for genotyping in a population of mixed breed steers (n=988). This population was fed vitamin A at 100% (100VA) or 50% (50VA the NRC recommended level (2200 IU/kg dry matter). No interaction was found with ADH1Cc.-64T>C however, ANPEPc.410G>A affected carcass yield (P<0.01; AA=2.47±0.03, GA=2.36±0.03, GG=2.14±0.08), marbling score (P<0.01; AA=397.2±2.7, GA=388.6±3.3, GG=370.4±7.2), and fat (P<0.01; AA=8.52±0.17 GA=7.58±0.21, GG=7.04±0.44; mm). Vitamin A also had an effect on backfat (P<0.05; 100VA= 8.13±0.24, 50VA = 7.35±0.25), and an interaction with ANPEPc.410c.G>A affected rib-eye area (P<0.05). The ANPEP SNP was genotyped in a second population of mixed breed steers (N=708) fed a standard feedlot ration with the NRC recommended level of vitamin A. There was an association with yield, marbling, fat, and rib-eye area (P<0.01). The AA genotype was more marbled, while GG animals were leaner with higher yields. Interestingly, ANPEPc.410G>A is the fourth variant in a haplotype containing twelve SNPs that are in linkage disequilibrium in exon 1 and intron 1. This was confirmed by sequencing cattle of various breeds from different populations. The three haplotypes could affect gene expression by altering transcription or translation efficiency. Investigation of the functional effects of these variants needs to be completed in order to understand how it alters traits related to feedlot cattle performance.
Advisors/Committee Members: Buchanan, Fiona C, Asai-Coakwell, Mika, McKinnon, John J, Bett, Kirstin E, Brook, Ryan K.
Subjects/Keywords: beef; cattle; genetics; variants; marbling; feedlot; carcass; nutrigenomics
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Hamilton, K. E. 1. (2019). A Nutrigenomic Perspective to Search for Gene Variants That Influence Carcass Traits of Feedlot Cattle. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/11739
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hamilton, Kelsey Evelyn 1994-. “A Nutrigenomic Perspective to Search for Gene Variants That Influence Carcass Traits of Feedlot Cattle.” 2019. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/11739.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hamilton, Kelsey Evelyn 1994-. “A Nutrigenomic Perspective to Search for Gene Variants That Influence Carcass Traits of Feedlot Cattle.” 2019. Web. 11 Apr 2021.
Vancouver:
Hamilton KE1. A Nutrigenomic Perspective to Search for Gene Variants That Influence Carcass Traits of Feedlot Cattle. [Internet] [Thesis]. University of Saskatchewan; 2019. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/11739.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hamilton KE1. A Nutrigenomic Perspective to Search for Gene Variants That Influence Carcass Traits of Feedlot Cattle. [Thesis]. University of Saskatchewan; 2019. Available from: http://hdl.handle.net/10388/11739
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
10.
Zalinko, Grant.
Effect of a low lignin hull, high oil groat oat on beef cattle growth, carcass quality and nutrient utilization.
Degree: 2014, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2014-08-1671
► A series of experiments were conducted to investigate the nutritional value of a new oat variety developed by the Crop Development Centre at the University…
(more)
▼ A series of experiments were conducted to investigate the nutritional value of a new oat variety developed by the Crop Development Centre at the
University of
Saskatchewan. Trials 1 and 2 evaluated performance of steers fed a low lignin hull, high oil groat (LLH-HOG) oat as a replacement for barley or corn. In trial 1, 400 steers were fed one of two diets with barley or the LLH-HOG oat at 37.8% of the diet DM. Dry matter intake was lower (P=0.02) and gain to feed improved (P0.01) for steers fed the oat-based diet. In trial 2, 240 steers were finished diets with barley, corn or the LLH-HOG oat at 88.2% of the finishing diet (DM). During finishing, steers on the oat diet had lower (P0.01) ADG, body and carcass (P<0.01) weights than barley or corn-fed cattle reflecting lower (P0.01) DMI.
In trial 3, 20 steers were fed one of seven diets consisting of barley silage and 0, 28, 56, or 84% LLH-HOG oat or barley grain (DM basis) to compare nutrient digestibility. Apparent DM, OM, ADF and NDF digestibility coefficients were lower (P<0.05) for LLH-HOG oat-based diets compared to barley-based diets. Apparent CP and EE digestibility coefficients were higher (P<0.05) for the LLH-HOG oat diets.
Trial 4 was conducted to assess ruminal fermentation differences between LLH-HOG oat- or barley-based finishing diets using four rumen cannulated steers. No diet effects (P>0.05) were observed for total ruminal VFA concentration or molar proportions of individual VFA however mean ruminal pH was lower (P=0.01) for steers fed the LLH-HOG oat-finishing diet. Further, the extent of pH decline in oat-fed cattle was greater (P<0.01) than for barley-fed cattle.
The results indicate that the energy value of the LLH-HOG oat is equivalent or superior to that of barley for growing cattle. However, further research is required to identify factors limiting feed intake of cattle fed this new oat type in finishing diets.
Advisors/Committee Members: McKinnon, John J., Christensen, David A., Penner, Greg B., Buchanan, Fiona C..
Subjects/Keywords: low lignin hull, high-oil groat oat; barley; corn; cattle performance; digestibility; carcass traits; fatty acids
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zalinko, G. (2014). Effect of a low lignin hull, high oil groat oat on beef cattle growth, carcass quality and nutrient utilization. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2014-08-1671
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Zalinko, Grant. “Effect of a low lignin hull, high oil groat oat on beef cattle growth, carcass quality and nutrient utilization.” 2014. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2014-08-1671.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zalinko, Grant. “Effect of a low lignin hull, high oil groat oat on beef cattle growth, carcass quality and nutrient utilization.” 2014. Web. 11 Apr 2021.
Vancouver:
Zalinko G. Effect of a low lignin hull, high oil groat oat on beef cattle growth, carcass quality and nutrient utilization. [Internet] [Thesis]. University of Saskatchewan; 2014. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2014-08-1671.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zalinko G. Effect of a low lignin hull, high oil groat oat on beef cattle growth, carcass quality and nutrient utilization. [Thesis]. University of Saskatchewan; 2014. Available from: http://hdl.handle.net/10388/ETD-2014-08-1671
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
11.
Anez, Federico.
EFFECT OF ENERGY SUPPLEMENTATION FROM BY-PRODUCT FEED PELLETS ON PRODUCTIVITY AND NUTRIENT UTILIZATION OF CATTLE GRAZING STOCKPILED CRESTED WHEATGRASS (Agropyron cristatum L.).
Degree: 2013, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2013-09-1200
► Three experiments were conducted to determine the effects of source (experiment 1), frequency, and level (experiments 2 and 3) of energy supplementation on performance, forage…
(more)
▼ Three experiments were conducted to determine the effects of source (experiment 1), frequency, and level (experiments 2 and 3) of energy supplementation on performance, forage utilization and intake, productivity, rumen fermentation, and nutrient digestibility of growing beef cattle fed stockpiled forage. In experiment 1 (EXP1) and experiment 2 (EXP2), 45 cross bred yearling steers were managed on stockpiled crested wheatgrass pasture over 70 days during summer/fall of 2011 and 2012. Steers were stratified by IBW (EXP1 = 334±1.2 kg; EXP2 = 358±1.8 kg) and allocated randomly to 1 of 9 crested wheatgrass pastures (5 steers/pasture). Each pasture was randomly assigned to 1 of 3 replicated (n = 3) treatments. In EXP1, two isonitrogenous and isocaloric by-product feed pellets that differed in starch and degradable fiber content were used in one of three supplementation strategies: 1) no supplement (CON), or supplemented at 0.6 % of BW with 2) low starch/high fibre (LS/HF) pellet (40.3% starch; 29.5% NDF DM basis) pellet, or 3) high starch/low fibre (HS/LF; 48.6% starch; 22.8% NDF DM basis) pellet. In EXP2 a by-product feed pellet was formulated to provide ruminal and post-ruminal energy (30.3 % NDF; 32.0 % starch; 7.2 % fat) supplementation strategies included: 1) daily (DLY) supplementation at 0.6 % of BW, 2) low-alternate (LA) supplementation at 0.9 % of BW, and 3) high-alternate (HA) supplementation at 1.2 % of BW. There was no effect (P > 0.05) of treatment on forage utilization in either experiment. In EXP 1, final BW and ADG were not different (P > 0.05) between LS/HF (435 kg; 1.4 kg d-1) and HS/LF (439 kg; 1.5 kg d-1). However, supplemented cattle had higher (P < 0.05) final BW and ADG than CON cattle (402 kg; 1.0 kg d-1). Supplementation increased production costs by 450 %. In EXP 2, no difference (P > 0.05) was observed for final BW and ADG among DLY (435 kg; 1.1 kg d-1), LA (424 kg; 0.9 kg d-1), and HA (428 kg; 1.0 kg d-1). Production costs were reduced by 23 % with alternate supplementation and LA had 19 % less production costs than HA.
In experiment three (EXP 3), four ruminally cannulated beef heifers were individually fed a stockpiled grass hay and offered the same pelleted supplement as in EXP2. Treatments consisted of 4 supplementation strategies: 1) no supplement (CON), 2) daily (DLY) supplementation at 0.6% BW, 3) low-alternate (LA) supplementation at 0.9 % of BW, and 4) high-alternate (HA) supplementation at 1.2 % of BW. Forage intake, rumen fermentation parameters, and apparent total tract digestibility were measured. Three data sets were analyzed: 1) overall (average of all collection days), 2) day of supplementation (DS) and 3) non-supplementation day (NSD) for alternating treatments. Overall, hay DMI (kg d-1) was lower (P = 0.04) for DLY (7.1) vs. CON (8.1), but no different (P ≥ 0.11) for DLY vs. LA (6.9), or vs. HA (6.4). On DS, hay DMI (kg d-1) of DLY (7.3) differed (P < 0.05) vs. HA (6.0), but was not different (P = 0.16) vs. LA (6.4). On NSD, hay DMI (kg d-1) of DLY (7.0) was not different (P ≥…
Advisors/Committee Members: McKinnon, John J., Lardner, Herbert A., Penner, Greg B., Jefferson, Paul G., Buchanan, Fiona C..
Subjects/Keywords: Energy supplementation; beef cattle; stockpiled crested wheatgrass
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APA ·
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Manager
APA (6th Edition):
Anez, F. (2013). EFFECT OF ENERGY SUPPLEMENTATION FROM BY-PRODUCT FEED PELLETS ON PRODUCTIVITY AND NUTRIENT UTILIZATION OF CATTLE GRAZING STOCKPILED CRESTED WHEATGRASS (Agropyron cristatum L.). (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2013-09-1200
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Anez, Federico. “EFFECT OF ENERGY SUPPLEMENTATION FROM BY-PRODUCT FEED PELLETS ON PRODUCTIVITY AND NUTRIENT UTILIZATION OF CATTLE GRAZING STOCKPILED CRESTED WHEATGRASS (Agropyron cristatum L.).” 2013. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2013-09-1200.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Anez, Federico. “EFFECT OF ENERGY SUPPLEMENTATION FROM BY-PRODUCT FEED PELLETS ON PRODUCTIVITY AND NUTRIENT UTILIZATION OF CATTLE GRAZING STOCKPILED CRESTED WHEATGRASS (Agropyron cristatum L.).” 2013. Web. 11 Apr 2021.
Vancouver:
Anez F. EFFECT OF ENERGY SUPPLEMENTATION FROM BY-PRODUCT FEED PELLETS ON PRODUCTIVITY AND NUTRIENT UTILIZATION OF CATTLE GRAZING STOCKPILED CRESTED WHEATGRASS (Agropyron cristatum L.). [Internet] [Thesis]. University of Saskatchewan; 2013. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2013-09-1200.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Anez F. EFFECT OF ENERGY SUPPLEMENTATION FROM BY-PRODUCT FEED PELLETS ON PRODUCTIVITY AND NUTRIENT UTILIZATION OF CATTLE GRAZING STOCKPILED CRESTED WHEATGRASS (Agropyron cristatum L.). [Thesis]. University of Saskatchewan; 2013. Available from: http://hdl.handle.net/10388/ETD-2013-09-1200
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
12.
Anez Osuna, Federico 1976-.
LEVEL AND SOURCE OF FAT IN THE DIET OF BEEF COWS.
Degree: 2019, University of Saskatchewan
URL: http://hdl.handle.net/10388/12074
► Two studies were conducted to evaluate the effects of fat and the type of fatty acid (MUFA vs. PUFA) inclusion in the diet of beef…
(more)
▼ Two studies were conducted to evaluate the effects of fat and the type of fatty acid (MUFA vs. PUFA) inclusion in the diet of beef cows during the pre- and postpartum period on the performance of the dam and the progeny. In study 1, replicated over three years, 36 second- and third-calving lactating Angus cows were stratified by BW (554±15.5 kg) and days postpartum (38±1.5 d), and randomly assigned to 9 paddocks (4 cows/paddock) where cows grazed cool-season grass (CSG) pastures (12.5±2.5% CP and 56.5±2.9% TDN). Each paddock was randomly assigned to one of three replicated treatments: a non-supplemented control (CON), and two supplemented (SUP) treatments where cows were offered either a canola seed (CAN) or a flaxseed (FLX) based pellet targeting 300 g/cow/d of supplemental fat (EE) over 42 d. Data were analyzed as a RCBD with contrasts for the effect of fat supplementation (CON vs. SUP) and source (CAN vs. FLX). Results indicate that CON had greater (P=0.01) forage utilization and tended (P=0.08) to have greater estimated forage DMI compared to SUP, while no difference (P≥0.76) was observed between CAN and FLX. At the end of the trial, all treatments resulted in positive ADG, maintained or increased BCS and SCFT, and reduced serum NEFA concentration with no difference (P≥0.20) among treatments. No differences (P≥0.12) were observed for pregnancy rate, calving distribution and calving to calving interval. In study 2, replicated over 2 years, 75 multiparous (≥3 calving) pregnant Angus cows were stratified by BW (663±21.5 kg) and BCS (2.6±0.12), and randomly assigned to 15 outdoor pens. Subsequently, each pen was randomly assigned to one of three (n=5) treatments: a low-fat diet (LF; 1.4±0.12% EE) and two high-fat diets (HF; 3.3±0.20% EE) which included a CAN or a FLX pelleted feeds similar to those used in study 1. Diets were formulated to meet the requirements of pregnant beef cows during the last two trimesters of gestation (183±4.8 d), and offered such that each pen on average received similar amounts of DE (31.2±2.8 Mcal/cow/d), CP (1.36±0.13 kg/cow/d), and DM (12.9±1.0 kg/cow/d). Data were analyzed as RCBD with contrasts for the effects of level (LF vs. HF) and source (CAN vs. FLX) of fat. After 160 d on trial, conceptus corrected-BW (CC-BW) of LF cows (708 kg) and the proportion of over conditioned cows (13.2%) were greater (P≤0.04) than those of HF, with no difference (P≥0.84) between CAN and FLX. Feeding FLX diet over gestation resulted in subcutaneous adipose tissue (SCAT) with greater (P≤0.01) concentration of CLnA (0.12 vs. 0.05%) and n-3 (0.58 vs. 0.37%) fatty acids, and a tendency (P=0.09) for CLA concentration (1.05 vs. 0.88%) to be greater when compared to CAN diet. By the end of gestation, serum NEFA concentration of LF cows (592 μEq/L) was lower (P<0.01) than that of HF cows, and FLX cows had greater (P<0.01) serum NEFA concentration than CAN cows (636 vs. 961 μEq/L). Cows receiving the LF diet over gestation gave birth to lighter (P≤0.01) calves compared to those receiving the HF diets (40.2 vs.…
Advisors/Committee Members: McKinnon, John J, Lardner, Herbet A, Buchanan, Fiona C, Penner, Gregory B, Jefferson, Paul G, Campbell, John, Fitzsimmons, Carolyn J.
Subjects/Keywords: Beef cows; Gestation; Fat supplementation
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Anez Osuna, F. 1. (2019). LEVEL AND SOURCE OF FAT IN THE DIET OF BEEF COWS. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/12074
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Anez Osuna, Federico 1976-. “LEVEL AND SOURCE OF FAT IN THE DIET OF BEEF COWS.” 2019. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/12074.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Anez Osuna, Federico 1976-. “LEVEL AND SOURCE OF FAT IN THE DIET OF BEEF COWS.” 2019. Web. 11 Apr 2021.
Vancouver:
Anez Osuna F1. LEVEL AND SOURCE OF FAT IN THE DIET OF BEEF COWS. [Internet] [Thesis]. University of Saskatchewan; 2019. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/12074.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Anez Osuna F1. LEVEL AND SOURCE OF FAT IN THE DIET OF BEEF COWS. [Thesis]. University of Saskatchewan; 2019. Available from: http://hdl.handle.net/10388/12074
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
13.
Jonker, Arjan.
Characterization of anthocyanidin-accumulating Lc-alfalfa for ruminants: nutritional profiles, digestibility, availability and molecular structures, and bloat characteristics.
Degree: 2011, University of Saskatchewan
URL: http://hdl.handle.net/10388/etd-05312011-144135
► Grazing cattle on alfalfa (Medicago sativa L.) would be economically beneficial, but its rapid initial rate of protein degradation results in pasture bloat, low efficiency…
(more)
▼ Grazing cattle on alfalfa (Medicago sativa L.) would be economically beneficial, but its rapid initial rate of protein degradation results in pasture bloat, low efficiency of protein utilization and excessive N pollution into the environment. Introducing a gene that stimulates the accumulation of mono/polymeric anthocyanidins might reduce the ruminal protein degradation rate and reduce bloat related foam stability. The overall objective of this thesis was to evaluate newly developed anthocyanidin-accumulating Lc-alfalfa progeny for nutritional properties (composition, site of degradation and molecular structure), environmental emissions and bloat characteristics.
The objective of the first study was to determine survival and phytochemical and chemical profiles of Lc-alfalfa progeny (BeavLc1, RambLc3 and RangLc4) and their non-transgenic (NT) parental cultivars (Beaver, Rambler and Rangelander). Lc-alfalfa forage accumulated enhanced amounts of anthocyanidin, with an average concentration of 197.4 µg/g DM, while proanthocyanidin (i.e. condensed tannins) were not detected. Both of these metabolites were absent in the NT-parental varieties. Lc-alfalfa progeny had ~3 % less crude protein (CP) and ~3 % more carbohydrates (CHO), which resulted in their 11 g/kg lower N:CHO ratio compared with NT-alfalfa. Total rumen-degradable N:CHO ratio based on chemical analysis was 12.9 g/kg lower in Lc-alfalfa compared with NT-alfalfa.
The objective of the second study was to evaluate in vitro degradation, fermentation and microbial-N partitioning of three forage color phenotypes [green, light purple-green (LPG) and purple-green (PG)] within Lc-progeny and their parental green NT-alfalfa varieties. Purple-green-Lc alfalfa accumulated more anthocyanidin than Green-Lc with LPG-Lc intermediate. Gas, methane and ammonia accumulation rates were slower for the two purple-Lc phenotypes compared with NT-alfalfa with Green-Lc intermediate. Effective degradable DM and N were lower in the three Lc-phenotypes compared with NT-alfalfa. Anthocyanidin concentration correlated negatively with gas and methane production rates and effective degradability of DM and N.
The objectives of the third study were to evaluate in situ ruminal degradation characteristics and synchronization ratios, and to model protein availability to dairy cattle and net energy for lactation of three Lc-alfalfa progenies, BeavLc1, RambLc3 and RangLc4 and the cultivar AC Grazeland (selected for a low initial rate of ruminal degradation). Anthocyanidin accumulation was on average 163.4 ìg/g DM in the three Lc-progeny while AC Grazeland did not accumulate anthocyanidin. The basic chemical composition of the original samples, soluble and potentially degradable fractions and degradation characteristics of crude protein and carbohydrates were similar in Lc-alfalfa and AC Grazeland. The undegradable in situ crude protein and neutral detergent fiber fraction were, respectively, 1.3 %CP and 4.8 %CHO lower in the three Lc-progeny compared with AC Grazeland. Lc-alfalfa had a 0.34 MJ/kg DM…
Advisors/Committee Members: Gruber, Margaret Y., Yu, Peiqiang, Coulman, Bruce, Wang, Yuxi, McKinnon, John J., Christensen, David A., Wittenberg, Karin, Mutsvangwa, Timothy.
Subjects/Keywords: nutrient profile and availability; anthocyanidin-accumulating Lc-alfalfa; pasture bloat; ruminant; FTIR molecular structures; ruminal fermentation and degradation
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jonker, A. (2011). Characterization of anthocyanidin-accumulating Lc-alfalfa for ruminants: nutritional profiles, digestibility, availability and molecular structures, and bloat characteristics. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-05312011-144135
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Jonker, Arjan. “Characterization of anthocyanidin-accumulating Lc-alfalfa for ruminants: nutritional profiles, digestibility, availability and molecular structures, and bloat characteristics.” 2011. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/etd-05312011-144135.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Jonker, Arjan. “Characterization of anthocyanidin-accumulating Lc-alfalfa for ruminants: nutritional profiles, digestibility, availability and molecular structures, and bloat characteristics.” 2011. Web. 11 Apr 2021.
Vancouver:
Jonker A. Characterization of anthocyanidin-accumulating Lc-alfalfa for ruminants: nutritional profiles, digestibility, availability and molecular structures, and bloat characteristics. [Internet] [Thesis]. University of Saskatchewan; 2011. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/etd-05312011-144135.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Jonker A. Characterization of anthocyanidin-accumulating Lc-alfalfa for ruminants: nutritional profiles, digestibility, availability and molecular structures, and bloat characteristics. [Thesis]. University of Saskatchewan; 2011. Available from: http://hdl.handle.net/10388/etd-05312011-144135
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
14.
Krause, Ashley.
EFFECTS OF UTILIZING CROP RESIDUES IN WINTER FEEDING SYSTEMS ON BEEF COW PERFORMANCE, REPRODUCTIVE EFFICIENCY AND ECONOMICS.
Degree: 2013, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2013-06-1119
► Over 2 years (Year 1, 2009-2010; Year 2, 2010-2011), two separate experiments were conducted to evaluate the effects of winter feeding system (n=3) on beef…
(more)
▼ Over 2 years (Year 1, 2009-2010; Year 2, 2010-2011), two separate experiments were conducted to evaluate the effects of winter feeding system (n=3) on beef cow performance, reproductive performance, economics and forage degradability. The three systems (treatments) were grazing pea crop residue (PEA) cv. ‘Performance 40-10’ (Year 1, TDN = 50.2%, CP = 7.3%; Year 2, TDN = 56.9%, CP = 8.9%) in field paddocks, grazing oat crop residue (OAT) cv. ‘Baler’ (Year 1, TDN = 59.1%, CP = 2.9%; Year 2, TDN = 66.9%, CP = 5.3%) in field paddocks, and feeding mixed grass-legume hay in drylot pens (DL) (Year 1, TDN = 61.4%; CP = 8.8%; Year 2, TDN = 52.3%, CP = 12.3%). In the first experiment, 90 dry, pregnant Black Angus cows (Year 1, 629 kg ± 74 kg; Year 2, 665 ± 69 kg) stratified by body weight (BW) and days pregnant were randomly allocated to 1 of the 3 systems. Cows were allocated feed in the field or pen on a 3 d basis and supplemented oat grain daily at 0.4-0.6% BW depending on environmental conditions. Dry matter intake (DMI) was estimated for each system using the herbage weight disappearance method. Cow BW, body condition score (BCS), and rib and rump fat were measured at start and end of trial and cow BW was corrected for conceptus gain based on calving data.
When data from the first 20 d were pooled over 2 years, initial cow BW was greater (P < 0.01) for the DL and OAT cows compared to the PEA cows and final cow BW was different (P < 0.01) between all 3 winter feeding systems. The change in BW was also greater (P < 0.01) for DL cows compared to cows on the OAT and PEA treatments. Analysis of the first 20 d of Year 1 study period and the total Year 2 study period, showed a significant (P < 0.01) year by treatment interaction for final BW and BW change. The differences (P < 0.01) in initial BW, final BW and BW change between the first 20 d of Year 1 study period and the total Year 2 study period (20 d) suggest feed quality, animal preference and weather conditions may cause difficulties when grazing residues in winter grazing systems.
Analysis of the entire trial period in Year 1 (62 d) indicates differences (P < 0.01) for final BW and BW change between cows on all three systems. The change in rib and rump fat was also different (P < 0.01) between cows in all 3 systems. In Year 2 (20 d), initial BW, final BW and BW change were different (P < 0.01) between DL and PEA cows, and between (P < 0.01) OAT and PEA cows. No difference (P > 0.05) was found for cow rib and rump fat in Year 2 and no difference (P > 0.05) was found for BCS in either Year 1 or Year 2 for cows managed in all 3 systems. Differences (P < 0.05) were observed for calving rate and calf birth weight between the DL and OAT system cows, but not between (P > 0.05) cows managed in the DL and PEA or OAT and PEA systems. Costs per cow per day were 1.22, 1.01 and 2.77 for PEA, OAT and DL systems in Year 1, respectively. In Year 2, cow costs per day were 1.59, 1.44 and 1.84 for PEA, OAT and DL systems, respectively.
In experiment 2, three ruminally cannulated,…
Advisors/Committee Members: Lardner, H. A., McKinnon, John J., Hendrick, Steve.
Subjects/Keywords: beef cow; crop residue; reproductive efficiency; system cost
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Krause, A. (2013). EFFECTS OF UTILIZING CROP RESIDUES IN WINTER FEEDING SYSTEMS ON BEEF COW PERFORMANCE, REPRODUCTIVE EFFICIENCY AND ECONOMICS. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2013-06-1119
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Krause, Ashley. “EFFECTS OF UTILIZING CROP RESIDUES IN WINTER FEEDING SYSTEMS ON BEEF COW PERFORMANCE, REPRODUCTIVE EFFICIENCY AND ECONOMICS.” 2013. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2013-06-1119.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Krause, Ashley. “EFFECTS OF UTILIZING CROP RESIDUES IN WINTER FEEDING SYSTEMS ON BEEF COW PERFORMANCE, REPRODUCTIVE EFFICIENCY AND ECONOMICS.” 2013. Web. 11 Apr 2021.
Vancouver:
Krause A. EFFECTS OF UTILIZING CROP RESIDUES IN WINTER FEEDING SYSTEMS ON BEEF COW PERFORMANCE, REPRODUCTIVE EFFICIENCY AND ECONOMICS. [Internet] [Thesis]. University of Saskatchewan; 2013. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2013-06-1119.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Krause A. EFFECTS OF UTILIZING CROP RESIDUES IN WINTER FEEDING SYSTEMS ON BEEF COW PERFORMANCE, REPRODUCTIVE EFFICIENCY AND ECONOMICS. [Thesis]. University of Saskatchewan; 2013. Available from: http://hdl.handle.net/10388/ETD-2013-06-1119
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
15.
Krone, Kristin.
EFFECT OF VARYING DIETARY VITAMIN A SUPPLEMENTATION LEVELS IN COMBINATION WITH ADH1C GENOTYPE ON INTRAMUSCULAR FAT DEPOSITION IN FINISHING BEEF STEERS.
Degree: 2014, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2014-06-1580
► Previously, ADH1Cc.-64T>C was shown to have an association with intramuscular fat (IMF) in the longissimus thoracis (LT) muscle when vitamin A was limited in finishing…
(more)
▼ Previously, ADH1Cc.-64T>C was shown to have an association with intramuscular fat (IMF) in the longissimus thoracis (LT) muscle when vitamin A was limited in finishing rations of beef steers. The purpose of the current study was to determine the optimum vitamin A supplementation level, in combination with ADH1C genotype, to increase IMF of the LT muscle. Forty-five TT, 45 CT and 27 CC cross-bred steers, black in colour, were backgrounded on a commercial ration containing 3360 IU vitamin A/kg DM. During finishing the steers were randomly assigned to one of three vitamin A treatments at 25, 50 and 75% of the NRC recommendation of 2200 IU/kg DM. Treatments were administered via an oral bolus. Carcass quality was evaluated and a sample from the LT muscle was collected for analysis of IMF. A treatment x genotype interaction (P=0.04) was observed for IMF; TT steers on the 75% treatment had higher IMF relative to CT and CC steers on the same treatment. Intramuscular fat was also higher for TT steers on the 75% treatment in comparison to TT steers on the 25% treatment. Eighty-four percent of the steers graded Canada AAA. Western blot analysis showed that TT steers had higher (P=0.02) ADH1C levels in hepatic tissue. Previously, TT steers had increased IMF when fed limited vitamin A. In the current study the lack of variation between treatments and genotypes at the lower vitamin A treatment levels was likely due to the majority of the steers grading Canada AAA (USDA Choice). However, the western blot data supports that TT steers are expected to have higher IMF deposition, due to an increase production of ADH1C.
Advisors/Committee Members: Buchanan, Fiona C., McKinnon, John J., Hendrick, Steve, Hogan, Natacha.
Subjects/Keywords: Vitamin A; beef cattle; nutrigenetics
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Krone, K. (2014). EFFECT OF VARYING DIETARY VITAMIN A SUPPLEMENTATION LEVELS IN COMBINATION WITH ADH1C GENOTYPE ON INTRAMUSCULAR FAT DEPOSITION IN FINISHING BEEF STEERS. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2014-06-1580
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Krone, Kristin. “EFFECT OF VARYING DIETARY VITAMIN A SUPPLEMENTATION LEVELS IN COMBINATION WITH ADH1C GENOTYPE ON INTRAMUSCULAR FAT DEPOSITION IN FINISHING BEEF STEERS.” 2014. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2014-06-1580.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Krone, Kristin. “EFFECT OF VARYING DIETARY VITAMIN A SUPPLEMENTATION LEVELS IN COMBINATION WITH ADH1C GENOTYPE ON INTRAMUSCULAR FAT DEPOSITION IN FINISHING BEEF STEERS.” 2014. Web. 11 Apr 2021.
Vancouver:
Krone K. EFFECT OF VARYING DIETARY VITAMIN A SUPPLEMENTATION LEVELS IN COMBINATION WITH ADH1C GENOTYPE ON INTRAMUSCULAR FAT DEPOSITION IN FINISHING BEEF STEERS. [Internet] [Thesis]. University of Saskatchewan; 2014. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2014-06-1580.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Krone K. EFFECT OF VARYING DIETARY VITAMIN A SUPPLEMENTATION LEVELS IN COMBINATION WITH ADH1C GENOTYPE ON INTRAMUSCULAR FAT DEPOSITION IN FINISHING BEEF STEERS. [Thesis]. University of Saskatchewan; 2014. Available from: http://hdl.handle.net/10388/ETD-2014-06-1580
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
16.
Nair, Jayakrishnan.
Evaluation of canola meal derived from Brassica juncea and Brassica napus as an energy source for cattle.
Degree: 2013, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2013-12-1354
► Two trials were carried out to evaluate the effect of inclusion level of canola meal derived from Brassica (B.) napus and B. juncea on cattle…
(more)
▼ Two trials were carried out to evaluate the effect of inclusion level of canola meal derived from Brassica (B.) napus and B. juncea on cattle performance and nutrient utilization. Trial 1 consisted of backgrounding (54 d) and finishing (153 d) phases. The control diet for the backgounding (BK) phase consisted of 39% barley silage, 30.4% barley grain, 22.8% brome grass hay and 7.8% supplement (DM). Treatments consisted of B. napus or B. juncea at 15 or 30% (DM) inclusion, replacing barley grain. The finishing control diet consisted of 88.3% barley grain, 4.4% barley silage and 7.3% supplement (DM). Treatments consisted of B. napus or B. juncea at 10 or 20% (DM) inclusion, replacing barley grain. During BK, dry matter intake (DMI), average daily gain (ADG), gain: feed (G:F) increased linearly (P < 0.01) as the level of inclusion of B. juncea meal increased. Cattle fed B. napus meal showed a quadratic response (P = 0.05) in DMI and linear increase (P = 0.02) in ADG with increasing inclusion. During finishing, DMI increased linearly (P = 0.05) for cattle fed B. juncea meal while a quadratic response (P = 0.02) was seen with B. napus meal. Feed efficiency and NEg content of the diet (P ≤ 0.02) decreased linearly with increasing inclusion of both meals. Trial 2 evaluated dietary rumen fermentation and total tract digestibility characteristics in a 5 x 5 Latin Square Design. Diets were similar to finishing phase of Trial 1. There was no effect of treatment on rumen pH, however a linear increase in acetate (P ≤ 0.01), ammonia (P < 0.01) and decrease (P < 0.01) in propionate was seen with both meal types. Crude protein and acid detergent fiber digestibility increased (P = 0.03) linearly with increasing inclusion of B. juncea meal. The results indicate that canola meal derived from B. napus and B. juncea is not suitable as a supplemental energy source replacing for barley grain in finishing diets but canola meal from B. juncea can be fed at levels up to 30% of the DM in backgrounding diets if priced appropriately.
Advisors/Committee Members: McKinnon, John J., Penner, Gregory B., Lardner, H (Bart) A., McAllister, Tim, Yu, Peiqiang.
Subjects/Keywords: canola meal; B. napus; B. juncea; feedlot cattle; digestibility
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nair, J. (2013). Evaluation of canola meal derived from Brassica juncea and Brassica napus as an energy source for cattle. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2013-12-1354
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Nair, Jayakrishnan. “Evaluation of canola meal derived from Brassica juncea and Brassica napus as an energy source for cattle.” 2013. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2013-12-1354.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nair, Jayakrishnan. “Evaluation of canola meal derived from Brassica juncea and Brassica napus as an energy source for cattle.” 2013. Web. 11 Apr 2021.
Vancouver:
Nair J. Evaluation of canola meal derived from Brassica juncea and Brassica napus as an energy source for cattle. [Internet] [Thesis]. University of Saskatchewan; 2013. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2013-12-1354.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nair J. Evaluation of canola meal derived from Brassica juncea and Brassica napus as an energy source for cattle. [Thesis]. University of Saskatchewan; 2013. Available from: http://hdl.handle.net/10388/ETD-2013-12-1354
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
17.
Schwaiger, Tyler.
The effect of dietary adaptation on the susceptibility to and recovery from ruminal acidosis in beef cattle.
Degree: 2013, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2013-04-1012
► Feeding diets rich in rapidly fermentable non-structural carbohydrates can lead to the development of ruminal acidosis. This study was conducted to determine if the duration…
(more)
▼ Feeding diets rich in rapidly fermentable non-structural carbohydrates can lead to the development of ruminal acidosis. This study was conducted to determine if the duration of time that cattle are fed a high-grain diet affects their absorption of short-chain fatty acids (SCFA) and susceptibility to, and recovery from, ruminal acidosis. Sixteen Angus heifers (BW ± SEM, 261 ± 6.1 kg) were assigned to 1 of 4 blocks, and fed a backgrounding diet consisting of 60% barley silage, 30% barley grain, and 10% supplement (DM basis). Within block, cattle were randomly assigned to 1 of 2 treatments differing in the number of days they were fed the high-grain diet prior to an acidosis challenge: 34 d for long-adapted (LA) and 8 d for short-adapted (SA). All cattle were exposed to the same 20-d dietary transition using 5 dietary steps until achieving the final diet that contained 9% barley silage, 81% barley grain, and 10% supplement (DM basis). Data were collected during an 8-d baseline period (BASE), on the d of the acidosis challenge (CHAL), and during two consecutive 8 d recovery periods (REC1 and REC2). Ruminal acidosis was induced by restricting feed to 50% of DMI:BW for 24 h followed by an intraruminal infusion of ground barley at 10% DMI:BW. Cows were then given their regular diet allocation 1 h after the intraruminal infusion. The duration of time fed the high-grain diet did not affect ruminal pH, lactate, or SCFA concentrations (P > 0.050). However, during BASE and on the day of CHAL the SA heifers experienced greater linear (P = 0.031), quadratic (P = 0.016), and cubic (P = 0.008) between day change in the duration of time that pH was < 5.5 than LA heifers. Relative to BASE, inducing acidosis increased daily duration (531 to 1020 min/d; P < 0.001) and area (176 to 595 (min × pH)/d; P < 0.001) that pH was < 5.5. Inducing ruminal acidosis also increased the daily mean (0.3 to 11.4 mM; P = 0.013) and maximum (1.3 to 29.3 mM; P = 0.008) rumen fluid lactate concentrations relative to BASE, suggesting that an acute bout of ruminal acidosis was induced. In addition, a treatment × day interaction for the duration that pH was < 5.5 during REC1 suggests that LA cattle tended to recover from the CHAL more rapidly than SA cattle (P = 0.085). Indeed, analysis of covariance confirmed that the LA heifers experienced a quicker linear (P = 0.019) recovery over time from CHAL. The greater rate of recovery possibly resulted from the LA heifers having greater rates of both fractional butyrate (45 vs. 36 %/h; P = 0.019) and propionate absorption (42 vs. 34 %/h; P = 0.045), and tending to have greater rates, on an absolute basis, of butyrate absorption (94 vs. 79 mmol/h; P = 0.087)
iii
and, on a fractional basis, of total SCFA absorption (37 vs. 32 %/h; P = 0.100). Treatment × period interactions revealed that LA heifers had greater serum D-lactate concentrations (P = 0.003), and fractional rates of lactate absorption (P = 0.024) than SA heifers, during CHAL and REC1, respectively. When treatments were pooled, the absorption (%/h and mmol/h)…
Advisors/Committee Members: Penner, Greg B., Beauchemin, Karen A., Mutsvangwa, Tim, McKinnon, John J..
Subjects/Keywords: Dietary adaptation; Short-chain fatty acid absorption; lactate absorption; Ruminal pH; Ruminal acidosis
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Schwaiger, T. (2013). The effect of dietary adaptation on the susceptibility to and recovery from ruminal acidosis in beef cattle. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2013-04-1012
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Schwaiger, Tyler. “The effect of dietary adaptation on the susceptibility to and recovery from ruminal acidosis in beef cattle.” 2013. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2013-04-1012.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Schwaiger, Tyler. “The effect of dietary adaptation on the susceptibility to and recovery from ruminal acidosis in beef cattle.” 2013. Web. 11 Apr 2021.
Vancouver:
Schwaiger T. The effect of dietary adaptation on the susceptibility to and recovery from ruminal acidosis in beef cattle. [Internet] [Thesis]. University of Saskatchewan; 2013. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2013-04-1012.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Schwaiger T. The effect of dietary adaptation on the susceptibility to and recovery from ruminal acidosis in beef cattle. [Thesis]. University of Saskatchewan; 2013. Available from: http://hdl.handle.net/10388/ETD-2013-04-1012
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
18.
Preston, Natalie Gayle 1989-.
Masters of Science.
Degree: 2016, University of Saskatchewan
URL: http://hdl.handle.net/10388/7466
► This project was targeted at identifying if it is possible to select a barley cultivar that has a higher NDF digestibility (NDFD) which can be…
(more)
▼ This project was targeted at identifying if it is possible to select a barley cultivar that has a higher NDF digestibility (NDFD) which can be ensiled in following years for livestock feed in order to increase digestibility and animal performance. Three barley cultivars, CDC Cowboy (H-NDFD), CDC Copeland (I-NDFD), and Xena (L-NDFD) were selected based on respective high, intermediate, and low NDFD following 30 h in vitro digestion of silage collected from commercial farms. The objective of the first study was to determine if a higher NDFD of a barley cultivar would alter the fermentation pattern of the silage compared to cultivars with lower NDFD. This was accomplished by ensiling the three barley cultivars in mini-silos to be opened at 3, 7, 14, 21, and 60 d after ensiling to measure fermentation parameters and microbial enumeration. Barley cultivars were also ensiled in bunker-silos for the feeding trial. Following 60 d ensiling, the silage was exposed to air to measure aerobic stability with temperature change measured continually, and fermentation parameters and microbial enumeration measured after 3, 7, 14, and 21 d of exposure. Chemical analysis compared fresh forage to 60 d silage, and silage from the bunker-silos used in the feeding trial, as well 60 d mini-silos and bunker-silo samples underwent in vitro NDFD analysis to compare to the selection criteria. There was no difference in in vitro NDFD of the three cultivars grown for this study. The H-NDFD cultivar had lower pH and higher lactate levels. Starch was higher in L-NDFD, and I-NDFD had higher ADF and NDF than the other cultivars. Bunker-silos had higher VFA concentrations than the mini-silos, and pH of I-NDFD and L-NDFD was lower in bunker-silos than mini-silos. Aerobic spoilage was only apparent in H-NDFD which saw silage temperature increase, lactate decrease and pH increase compared to the other cultivars.
The objective of the second trial was to determine whether increased in vitro NDFD would increase digestibility and animal performance through improved intake, weight gain, or carcass traits. A replicated 3x3 Latin square used rumen cannulated wethers to measure total tract digestibility of the three barley cultivars as part of a 50:50 barley silage to concentrate diet (DM basis). Rumen pH was measured using in dwelling pH probes to record pH over 48 h. Total collections were conducted over four days with rumen fluid collection on the fourth day at 0, 3, 6, 12 h after feeding for VFA, ammonia, and protozoa enumeration. A lamb performance trial was conducted feeding 42 lambs equally divided ram and ewe lambs between the three barley cultivars with diets comprised of 40:60 silage to concentrate (DM basis). Intake was recorded daily, and lamb weight weekly, for ADG and F:G calculations. Following 72 d on feed, ram lambs were slaughtered and carcass characteristics recorded. The L-NDFD digestibility trial diet had lower ADF and NDF, and higher starch than the H-NDFD diet, but there was no difference in total tract digestibility, consistent with…
Advisors/Committee Members: McAllister, Tim A, McKinnon, John J, Buchanan, Fiona, Christensen, David A, Yu, Peiqiang, Coulman, Bruce E.
Subjects/Keywords: barley silage; neutral detergent fiber digestibility; fermentation; aerobic stability; lamb performance
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Preston, N. G. 1. (2016). Masters of Science. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/7466
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Preston, Natalie Gayle 1989-. “Masters of Science.” 2016. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/7466.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Preston, Natalie Gayle 1989-. “Masters of Science.” 2016. Web. 11 Apr 2021.
Vancouver:
Preston NG1. Masters of Science. [Internet] [Thesis]. University of Saskatchewan; 2016. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/7466.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Preston NG1. Masters of Science. [Thesis]. University of Saskatchewan; 2016. Available from: http://hdl.handle.net/10388/7466
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
19.
Ward, Alison.
Vitamin A and intramuscular fat deposition: a nutrigenetic investigation in beef cattle.
Degree: 2011, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2011-11-210
► min A restriction has been associated with increased marbling in beef cattle. The purpose of this study was to investigate a possible nutrigenetic mechanism leading…
(more)
▼ min A restriction has been associated with increased marbling in beef cattle. The purpose of this study was to investigate a possible nutrigenetic mechanism leading to this increase in intramuscular fat. Four genes involved in the vitamin A pathway were examined for genetic polymorphisms that could alter mRNA expression or protein structure. A total of fourteen SNPs were found in bovine alcohol dehydrogenase 1C (ADH1C), aldehyde dehydrogenase 1A1 (ALDH1A1), peroxisome proliferator-activated receptor (PPAR), and retinol binding protein 4 (RBP4). Five of these SNPs were examined for associations with production and carcass traits in a previously reported population of 400 crossbred steers. ALDH1A1 c.*27C>T was significantly associated with backgrounding average daily gain (P<0.05) however no associations were found between ADH1C c.-64T>C, ADH1C c.967C>T, ALDH1A1 c.*109A>G, or PPAR c.1344G>T with any of the parameters measured.
A nutritional study was performed to examine the interaction between ADH1C c.-64T>C and vitamin A restriction on production and carcass traits in cattle. It was hypothesized that a phenotypic effect would be observed only when vitamin A was restricted. An initial population of 450 black Angus cross steers were genotyped at ADH1C c.-64T>C and from that population 130 steers (50 TT, 50 CT, and 30 CC) were randomly selected for use in the vitamin A restriction study. They were backgrounded for three months on a low -carotene diet and finished for five months on a diet that did not contain supplemental vitamin A. During the finishing period the steers were treated with monthly boluses of either 0 IU (unsupplemented) or 750,000 IU (supplemented) supplemental vitamin A. Liver and fat biopsies were obtained at the start and end of finishing from a subgroup of five steers per genotype per treatment to assess vitamin A status and measure gene expression. Marbling score was significantly greater (P<0.05) in unsupplemented steers. A significant interaction was found between genotype and vitamin A supplementation on intramuscular fat content. Within the unsupplemented treatment, TT steers had significantly greater intramuscular fat than CC steers. Within TT steers, unsupplemented steers had significantly greater intramuscular fat than supplemented animals. Expression of ADH1C in the liver was significantly higher in TT steers than CC steers. ADH1C c.-64T>C in combination with reduced vitamin A supplementation could potentially be implemented in marker-assisted management to maximize intramuscular fat deposition in finishing cattle.
Advisors/Committee Members: Buchanan, Fiona C., Schmutz, Sheila S., McKinnon, John J., Laarveld, Bernard, Palmer, Colin.
Subjects/Keywords: Genetics; Cattle nutrition; Vitamin A
…was approved by the University of Saskatchewan Animal Care Committee
(protocol number…
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ward, A. (2011). Vitamin A and intramuscular fat deposition: a nutrigenetic investigation in beef cattle. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2011-11-210
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ward, Alison. “Vitamin A and intramuscular fat deposition: a nutrigenetic investigation in beef cattle.” 2011. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2011-11-210.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ward, Alison. “Vitamin A and intramuscular fat deposition: a nutrigenetic investigation in beef cattle.” 2011. Web. 11 Apr 2021.
Vancouver:
Ward A. Vitamin A and intramuscular fat deposition: a nutrigenetic investigation in beef cattle. [Internet] [Thesis]. University of Saskatchewan; 2011. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2011-11-210.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ward A. Vitamin A and intramuscular fat deposition: a nutrigenetic investigation in beef cattle. [Thesis]. University of Saskatchewan; 2011. Available from: http://hdl.handle.net/10388/ETD-2011-11-210
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
20.
Beliveau, Renee Maxine.
Effect of graded levels of wheat-based dried distiller's grains in a barley ration on the growth performance, carcass quality and rumen characteristics of feedlot steers.
Degree: 2008, University of Saskatchewan
URL: http://hdl.handle.net/10388/etd-09022008-102939
► Two trials were conducted to evaluate the effects of titrated levels of wheat-based dried distiller’s grains on feedlot performance, carcass characteristics and rumen fermentation parameters…
(more)
▼ Two trials were conducted to evaluate the effects of titrated levels of wheat-based dried distiller’s grains on feedlot performance, carcass characteristics and rumen fermentation parameters of cattle fed wheat-based dried distiller’s grains with solubles (DDGS). In trial 1, a barley grain-based diet (0% DDGS) was used as a control. It was formulated to 12% CP and 1.52 and 0.93 Mcal kg-1 net energy of maintenance (NEm ) and net energy of gain( NEg) respectively, during the backgrounding period and to 13% crude protein (CP) and 1.90 and 1.26 Mcal kg-1 NEm and NEg respectively, during finishing. Wheat-based DDGS replaced on a dry matter basis (DM) barley grain at levels of 8, 16, 24 and 32% during backgrounding and 6, 12, 18 and 23% during finishing. During backgrounding dry matter intake (P = 0.02), ADG (P = 0.04), and ultrasounded (US) longissimus. dorsi gain (P = 0.02) exhibited a cubic response to DDGS inclusion level with theoretical minima at 6.9, 8.1 and 6.9% DDGS respectively, and theoretical maxima responses at 27.2, 30.8 and 23.9% DDGS, respectively. Feed efficiency exhibited a quadratic response (P = 0.02) to DDGS inclusion level with a theoretical poorest response at 13.1% DDGS. Similar responses were noted during the first 56 d of the finishing period, however over the course of the finishing period no effect of DDGS inclusion level was noted on average daily gain (ADG), DMI, feed efficiency (FE), ultrasound measurements or on any carcass traits. Trial 2 examined the effects of graded levels of wheat-based DDGS (0, 7, 14, 21% DM basis) on rumen fermentation characteristics using rumen cannulated heifers. Rumen pH measurements indicated that the pH mean at or below 5.8 and 5.5 decreased as DDGS inclusion level increased to 14% DM. The highest values (P
Advisors/Committee Members: McKinnon, John J..
Subjects/Keywords: Feedlot Cattle; Barley Grain; Wheat-based DDGS
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Beliveau, R. M. (2008). Effect of graded levels of wheat-based dried distiller's grains in a barley ration on the growth performance, carcass quality and rumen characteristics of feedlot steers. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-09022008-102939
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Beliveau, Renee Maxine. “Effect of graded levels of wheat-based dried distiller's grains in a barley ration on the growth performance, carcass quality and rumen characteristics of feedlot steers.” 2008. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/etd-09022008-102939.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Beliveau, Renee Maxine. “Effect of graded levels of wheat-based dried distiller's grains in a barley ration on the growth performance, carcass quality and rumen characteristics of feedlot steers.” 2008. Web. 11 Apr 2021.
Vancouver:
Beliveau RM. Effect of graded levels of wheat-based dried distiller's grains in a barley ration on the growth performance, carcass quality and rumen characteristics of feedlot steers. [Internet] [Thesis]. University of Saskatchewan; 2008. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/etd-09022008-102939.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Beliveau RM. Effect of graded levels of wheat-based dried distiller's grains in a barley ration on the growth performance, carcass quality and rumen characteristics of feedlot steers. [Thesis]. University of Saskatchewan; 2008. Available from: http://hdl.handle.net/10388/etd-09022008-102939
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
21.
Clark, Leah 1987-.
EVALUATION OF DRIED DISTILLERS GRAINS COMPARED TO BARLEY IN EXTENSIVE GRAZING SCENARIOS FOR STOCKER CATTLE.
Degree: 2016, University of Saskatchewan
URL: http://hdl.handle.net/10388/7653
► Three experiments were conducted to determine the effects of dry distillers grains (DDGS) on calf performance, forage utilization, and production costs. In addition, a digestibility…
(more)
▼ Three experiments were conducted to determine the effects of dry distillers grains (DDGS) on calf performance, forage utilization, and production costs. In addition, a digestibility trial was conducted using ram lambs to determine the effects of supplement on nutrient digestibility and intake. In 3 field grazing trials, 54 crossbred yearling beef calves (mean BW±SD; 258.1±7.3kg) were stratified by body weight (BW) and randomly allocated to 1 of 3 replicated (n=2) supplement strategies. Calves were managed on fall stockpiled crested wheatgrass pasture (OMD=48.1%, CP=6.2% (DM)) in experiment one (EXP 1) and summer pasture in experiment three (EXP 3) (OMD=57.0%, CP=14.4% (DM)). For experiment two (EXP 2) the same calves form EXP 1 were managed on a bale grazing (OMD=45.3%, CP=7.1% (DM)) program on dormant pasture. EXP 1 supplement treatments were (1) 70% barley + 30% canola meal (CONT); (2) 70% barley + 30% DDGS (70:30); and (3) 100% DDGS. EXP 2 and EXP 3 supplementation treatments were (1) 100% barley (CONT); (2) 50% barley + 50% DDGS (50:50); and (3) 100% DDGS. Forage utilization was measured for all grazing trials using the herbage weight disappearance method. Calf BW was measured at start and end of trial and every 14 d throughout. There was no effect (P>0.05) of supplementation on forage utilization in EXP 1 or EXP 2. Pasture utilization was greater (P=0.04) in EXP 3 for CONT and 50:50 supplement strategies compared to DDGS supplemented calves. There was no effect (P>0.05) of supplement strategy on calf performance in terms of body weight change in all 3 field grazing studies. Costs per calf per d in EXP 1 were 0.80, 0.79 and 0.77 for DDGS, 70:30 and CONT, respectively. Costs per calf per d in EXP 2 were 1.53, 1.51, and 1.53 for DDGS, 50:50 and CONT, respectively. Costs per calf per d for EXP 3 were 1.84, 1.78, and 1.71 for DDGS, 50:50 and CONT, respectively.
In experiment four (EXP 4), 24 Suffolk ram lambs (mean BW±SD; 43.5±5 (kg)) were fed a grass legume hay (OMD=54.17%, CP=7.17% (DM)) and supplemented with either (1) 100% DDGS; (2) 50% barley and 50% DDGS; (3) 100% barley (CONT). Forage intake and apparent total tract digestibility were measured. Forage intake was not (P>0.05) affected by supplementation strategy. Digestibility of CP (P=0.01) and ADF (p=0.02) were significantly higher for DDGS supplemented calves, compared barley supplemented calves. However, organic matter digestibility (OMD) and dry matter digestibility (DMD) were not different between supplement strategies.
The results of all 4 experiments suggest that DDGS can be used as a suitable supplement for growing beef calves or sheep in extensive pasture scenarios, while consuming grass-legume hay. DDGS had similar effects on calf performance, forage utilization, and digestibility. Because of this, the inclusion of DDGS as a supplement for ruminants will depend on the initial price of the supplement.
Advisors/Committee Members: Lardner, HA (Bart), Christensen, David A, Mckinnon, John J, Buchanan, Fiona, Erickson, Nathan.
Subjects/Keywords: Wheat DDGS; backgrounding; extensive grazing; barley; sheep
…Fuels Association (CRFA) 2009; University of
Saskatchewan 2009). This level of… …ethanol production creates roughly 460 thousand metric
tonnes of DDGS (University of… …Saskatchewan 2009).
2.1.1 Co-product Production
The main steps of ethanol production are…
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Clark, L. 1. (2016). EVALUATION OF DRIED DISTILLERS GRAINS COMPARED TO BARLEY IN EXTENSIVE GRAZING SCENARIOS FOR STOCKER CATTLE. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/7653
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Clark, Leah 1987-. “EVALUATION OF DRIED DISTILLERS GRAINS COMPARED TO BARLEY IN EXTENSIVE GRAZING SCENARIOS FOR STOCKER CATTLE.” 2016. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/7653.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Clark, Leah 1987-. “EVALUATION OF DRIED DISTILLERS GRAINS COMPARED TO BARLEY IN EXTENSIVE GRAZING SCENARIOS FOR STOCKER CATTLE.” 2016. Web. 11 Apr 2021.
Vancouver:
Clark L1. EVALUATION OF DRIED DISTILLERS GRAINS COMPARED TO BARLEY IN EXTENSIVE GRAZING SCENARIOS FOR STOCKER CATTLE. [Internet] [Thesis]. University of Saskatchewan; 2016. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/7653.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Clark L1. EVALUATION OF DRIED DISTILLERS GRAINS COMPARED TO BARLEY IN EXTENSIVE GRAZING SCENARIOS FOR STOCKER CATTLE. [Thesis]. University of Saskatchewan; 2016. Available from: http://hdl.handle.net/10388/7653
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
22.
Walpole, Matthew E 1986-.
EXAMINING THE FUNCTIONAL ROLES OF AQUAPORINS AND UREA TRANSPORTERS IN THE MOVEMENT OF UREA ACROSS THE RUMINAL EPITHELIUM.
Degree: 2016, University of Saskatchewan
URL: http://hdl.handle.net/10388/7359
► Ussing chamber studies of ruminal epithelial tissue have provided insight into the mechanisms that regulate serosal-to-mucosal urea transport. Of these mechanisms, urea transport (UT-B) proteins…
(more)
▼ Ussing chamber studies of ruminal epithelial tissue have provided insight into the mechanisms that regulate serosal-to-mucosal urea transport. Of these mechanisms, urea transport (UT-B) proteins have been shown to facilitate urea movement across the ruminal epithelium; however, other mechanisms may be involved as well because inhibiting UT-B does not completely eliminate urea transport. Of the aquaporins (AQP), which are a family of membrane-spanning proteins that are predominantly involved in the movement of water, AQP-3, -7, and -10 are also permeable to urea, but it is not clear if they contribute to urea transport across the ruminal epithelium. My objectives were to determine the relative functional roles of UT- and AQP-mediated serosal to mucosal urea flux (Jsm-urea) in response to changes in dietary carbohydrate fermentability, as well as ruminal ammonia and blood urea concentrations.
The objectives of the Chapter 2 studies were: 1) to evaluate if there are differences in the magnitude of serosal-to-mucosal urea transfer in ruminal epithelium obtained from the caudal-dorsal or ventral sacs; 2) to determine the optimum mucosal buffer pH for maximal urea transport across the bovine ruminal epithelium; 3) to determine the time that is required for steady-state isotope equilibration with bovine ruminal epithelium; and 4) to determine if NiCl2 and HgCl2 are suitable inhibitors of aquaporin-mediated urea transport in bovine ruminal epithelium. Steady-state Jsm-urea and Jsm-mannitol fluxes were observed by 45 min following isotopic additions to the serosal buffer. Epithelia collected from the caudal-dorsal sac had higher Jsm-urea (P = 0.03) and lower Jsm-mannitol (P < 0.01) than that collected from the ventral sac. Reducing mucosal buffer pH from 7.0 to 5.2 increased Jsm-urea quadratically, where Jsm-urea increased from pH 7.0 to 6.4 and thereafter decreased (P = 0.01). Both HgCl2 and NiCl2 inhibited Jsm-urea (P < 0.01); however, the addition of HgCl2 increased Tissue Conductance (Gt) when compared to NiCl2.
The objectives of Chapter 3were to determine: 1) the functional roles of AQP and UT-B in the serosal-to-mucosal urea flux (Jsm-urea) across rumen epithelium; and 2) whether functional adaptation occurred in response to increased diet fermentability. Serosal addition of phloretin. The addition of phloretin or NiCl2 reduced the Jsm-urea from 116.5 to 54.0 and 89.5 nmol·cm-2·h-1, respectively across all dietary treatments. When both inhibitors were added simultaneously, Jsm-urea was further reduced to 36.8 nmol·cm-2·h-1. Phloretin-sensitive and NiCl2-sensitive Jsm-urea
III
were not affected by diet. The Jsm-urea tended to increase linearly as the duration of adaptation to
MGD increased, with the lowest Jsm-urea being observed in animals fed CON (107.7 nmol·cm-2·h-
1) and the highest for those fed the MGD for 21 d (144.2 nmol·cm-2·h-1). Phloretin-insensitive
Jsm-urea tended to increase linearly as the duration of adaptation to moderate grain diet increased,
whereas there was a tendency for NiCl2-insensitive Jsm-urea…
Advisors/Committee Members: Mutsvangwa, Timothy, Penner, Gregory B, McKinnon, John J, Loewen, Matthew E, Buchannan, Fiona.
Subjects/Keywords: Rumen; Urea Recycling
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Chicago ·
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APA (6th Edition):
Walpole, M. E. 1. (2016). EXAMINING THE FUNCTIONAL ROLES OF AQUAPORINS AND UREA TRANSPORTERS IN THE MOVEMENT OF UREA ACROSS THE RUMINAL EPITHELIUM. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/7359
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Walpole, Matthew E 1986-. “EXAMINING THE FUNCTIONAL ROLES OF AQUAPORINS AND UREA TRANSPORTERS IN THE MOVEMENT OF UREA ACROSS THE RUMINAL EPITHELIUM.” 2016. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/7359.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Walpole, Matthew E 1986-. “EXAMINING THE FUNCTIONAL ROLES OF AQUAPORINS AND UREA TRANSPORTERS IN THE MOVEMENT OF UREA ACROSS THE RUMINAL EPITHELIUM.” 2016. Web. 11 Apr 2021.
Vancouver:
Walpole ME1. EXAMINING THE FUNCTIONAL ROLES OF AQUAPORINS AND UREA TRANSPORTERS IN THE MOVEMENT OF UREA ACROSS THE RUMINAL EPITHELIUM. [Internet] [Thesis]. University of Saskatchewan; 2016. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/7359.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Walpole ME1. EXAMINING THE FUNCTIONAL ROLES OF AQUAPORINS AND UREA TRANSPORTERS IN THE MOVEMENT OF UREA ACROSS THE RUMINAL EPITHELIUM. [Thesis]. University of Saskatchewan; 2016. Available from: http://hdl.handle.net/10388/7359
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
23.
Petri, Renee.
IMPACT OF DIET COMPOSITION ON RUMEN BACTERIAL PHYLOGENETICS.
Degree: 2013, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2013-02-931
► ABSTRACT Two experiments were conducted to determine the effects of various forage to concentrate ratios on the rumen microbial ecosystem and rumen fermentation parameters using…
(more)
▼ ABSTRACT
Two experiments were conducted to determine the effects of various forage to concentrate ratios on the rumen microbial ecosystem and rumen fermentation parameters using culture-independent methods. In the first experiment, cattle were fed either a high concentrate (HC) or a high concentrate without forage (HCNF) diet. Comparison of rumen fermentation parameters between these two diets showed that duration of time spent below pH 5.2 and rumen osmolality were higher for HCNF. Calculations using Simpson’s index showed a greater diversity of dominant species for HCNF than in HC based on 16S rRNA PCR-DGGE. Real-time real-time PCR showed populations of Fibrobacter succinogenes (P=0.01) were lower in HCNF than HC diets. Ruminococcus spp., F. succinogenes and Selenomonas ruminantium were present at higher (P≤0.05) concentrations in solid than in liquid digesta in both diets. The second experiment compared cattle as they adapted from a strictly forage to a concentrate diet, after which they were subject to an acidotic challenge and a recovery period (Forage, Mixed Forage, High Grain, Acidosis and Recovery). A total of 153,621 high-quality bacterial sequences were obtained from biopsied rumen epithelium, and 407,373 sequences from the solid and liquid phases of rumen contents. Only 14 epithelial genera representing >1.0% of the epimural population differed (P ≤ 0.05) among dietary treatments. However, clustering showed a closer relation in bacterial profiles for the Forage and Mixed Forage diets as compared to the High Grain, Acidosis and Recovery diets. Several epithelial identified genera including Atopobium, Desulfocurvus, Fervidicola, Lactobacillus and Olsenella increased as a result of acidosis. However, any changes in bacterial populations during the acidosis challenge were not sustained during the recovery period. This indicates a high level of stability within the rumen epimural community. An epithelial core microbiome was determined which explained 21% of the enumerable rumen population across all treatment samples. Cluster analysis of the solid and liquid phase rumen bacterial showed that these populations differed (P ≤ 0.10) between forage and grain-based diets. Rumen core microbiome analysis found 32 OTU’s representing 10 distinct bacterial taxa in whole rumen contents for all dietary treatments. Heifers that developed clinical acidosis vs the subclinical acidosis showed increases in the genera Acetitomaculum, Lactobacillus, Prevotella, and Streptococcus. Variation in microbial taxa as an effect of both treatment and animal was evident in the solid and liquid fractions of the rumen digesta. However, impacts of a dietary treatment were transient and despite an acidotic challenge, rumen microbiota were able to recover within a week of perturbation. The bacterial populations in the rumen are highly diverse as indicated by DGGE analysis and showed clear distinction between not only dietary treatments, individual animals, but also between epithelial, liquid and solid associated populations on the same diet.…
Advisors/Committee Members: McAllister, Tim A., McKinnon, John J., Mutsvangwa, Tim, VanKessel, Andrew, Hendrick, Steve, Beauchemin, Karen.
Subjects/Keywords: real-time PCR; DGG; pyrosequencing; cattle; rumen
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Petri, R. (2013). IMPACT OF DIET COMPOSITION ON RUMEN BACTERIAL PHYLOGENETICS. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2013-02-931
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Petri, Renee. “IMPACT OF DIET COMPOSITION ON RUMEN BACTERIAL PHYLOGENETICS.” 2013. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2013-02-931.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Petri, Renee. “IMPACT OF DIET COMPOSITION ON RUMEN BACTERIAL PHYLOGENETICS.” 2013. Web. 11 Apr 2021.
Vancouver:
Petri R. IMPACT OF DIET COMPOSITION ON RUMEN BACTERIAL PHYLOGENETICS. [Internet] [Thesis]. University of Saskatchewan; 2013. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2013-02-931.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Petri R. IMPACT OF DIET COMPOSITION ON RUMEN BACTERIAL PHYLOGENETICS. [Thesis]. University of Saskatchewan; 2013. Available from: http://hdl.handle.net/10388/ETD-2013-02-931
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
24.
Yang, Ling.
EFFECT OF CARBOHYDRATE TRAITS ON NUTRITIONAL CHARACTERISTICS AND.
Degree: 2012, University of Saskatchewan
URL: http://hdl.handle.net/10388/ETD-2012-12-849
► Four hulless barley varieties (zero-amylose waxy, CDC Fibar; 5%-amylose waxy, CDC Rattan; normal-amylose, CDC McGwire and high-amylose, HB08302) were developed at the Crop Development Centre,…
(more)
▼ Four hulless barley varieties (zero-amylose waxy, CDC Fibar; 5%-amylose waxy, CDC Rattan; normal-amylose, CDC McGwire and high-amylose, HB08302) were developed at the Crop Development Centre,
University of
Saskatchewan with differences in carbohydrates traits on the basis of amylose (1 to 20% DM), amylopectin (34 to 51% DM), amylose to amylopectin ratio (0.02 to 0.59) and β-glucan (5 to 10% DM) content. The objectives of this research were to determine: 1) the effect of the alteration of these carbohydrate traits in hulless barley on nutrient availability in ruminants, and 2) spectral characteristics of molecular structures in comparison with hulled barley-CDC Copeland. Studies on chemical and nutrient profiles, rumen degradation kinetics, in vitro intestinal nutrient digestion and potential protein supply estimated by the Dutch model and the NRC Dairy 2001 model were carried out. Fourier Transform Infrared Spectroscopy (FTIR) and advanced synchrotron-based FTIR Microspectroscopy (SR-FTIRM) with univariate and multivariate analysis were applied to investigate the influence of genetic modification of barley cultivars on the molecular structure features at the regions of protein amide I and II, β-glucan, cellulosic compounds and carbohydrates. By quantifying the relationship between the measured parameters and the alteration of carbohydrate traits, the results of studies revealed: 1) the hulless barley lines with altered carbohydrate traits have the potential to increase rumen and intestinal nutrient availability, thus improving the truly absorbed protein supply to ruminants compared to hulled barley; 2) lower amylose and higher β-glucan level in the hulless barley varieties increased estimated energy and metabolizable protein supply to ruminants; 3) molecular structure differences of the hulless barley varieties can be detected by both conventional FTIR spectroscopy and SR-FTIRM; 4) metabolizable protein (MP) was affected significantly by protein molecular structure characteristics in hulless barley.
Advisors/Committee Members: Yu, Peiqiang, Christensen, David A., McKinnon, John J., Buchanan, Fiona C..
Subjects/Keywords: Hulled and hulless barley; Amylose; β-Glucan; DVE/OEB; Synchrotron-based Fourier Transform Infrared Spectroscopy (SR-FTIRM)
…were developed at the
Crop Development Centre, University of Saskatchewan, based on amylose…
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yang, L. (2012). EFFECT OF CARBOHYDRATE TRAITS ON NUTRITIONAL CHARACTERISTICS AND. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2012-12-849
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Yang, Ling. “EFFECT OF CARBOHYDRATE TRAITS ON NUTRITIONAL CHARACTERISTICS AND.” 2012. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/ETD-2012-12-849.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yang, Ling. “EFFECT OF CARBOHYDRATE TRAITS ON NUTRITIONAL CHARACTERISTICS AND.” 2012. Web. 11 Apr 2021.
Vancouver:
Yang L. EFFECT OF CARBOHYDRATE TRAITS ON NUTRITIONAL CHARACTERISTICS AND. [Internet] [Thesis]. University of Saskatchewan; 2012. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/ETD-2012-12-849.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yang L. EFFECT OF CARBOHYDRATE TRAITS ON NUTRITIONAL CHARACTERISTICS AND. [Thesis]. University of Saskatchewan; 2012. Available from: http://hdl.handle.net/10388/ETD-2012-12-849
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
25.
Ban, Yajing.
MOLECULAR STRUCTURAL, PHYSIOCHEMICAL AND NUTRITIONAL CHARACTERIZATION OF NEW LINES OF BRASSICA CARINATA AND THE CO-PRODUCTS.
Degree: 2016, University of Saskatchewan
URL: http://hdl.handle.net/10388/7376
► Brassica carinata is widely used in bio-fuel industry recently because of its high oil content and good resistance. Carinata seeds contain 33% oil, 34% protein,…
(more)
▼ Brassica carinata is widely used in bio-fuel industry recently because of its high oil content and good resistance. Carinata seeds contain 33% oil, 34% protein, 8% oleic acid (total fatty acids basis), 42% erucic acid (total fatty acids basis), 16% linoleic acid and 13% linolenic acid (total fatty acids basis), and 120 µmol/g glucosinolates. The co-product after oil extraction, carinata meal, is high in protein and low in fiber content. However, the molecular structural, nutritional and metabolic characteristics of yellow and brown carinata seeds of newly developed Brassica carinata lines from Agriculture and Agri-Food Canada (AAFC) and carinata co-products as feed ingredients are lacking. The objectives of this research were to investigate: 1) the nutritional and digestive characteristics of carinata seeds and carinata co-products for dairy cattle, 2) the molecular structural features of carinata seeds and carinata co-products, and 3) the relationship of molecular structural features to nutritional bioavailability. Yellow and brown seeds of new carinata lines were collected and compared to canola seeds from newly bred lines and a commercial cultivar. Carinata co-products, carinata meal and hexane-extracted carinata presscake, were compared with canola meal. Chemical profiles, energy values, rumen degradation kinetics of nutrients and intestinal digestion of protein were investigated, then truly absorbed protein supply to dairy cattle was predicted based on the DVE/OEB system and the NRC Dairy model. The molecular structural spectral characteristics were detected by the Fourier Transform Infrared (FTIR) vibrational spectroscopy for protein and carbohydrate related functional groups. Lastly, the relationship between nutritional values and molecular structural spectral parameters was revealed by correlation and regression studies. The results showed: 1) carinata seeds and the co-products were lower in fiber content but higher in protein; 2) carinata seeds had higher rumen degraded protein and metabolizable protein supply in dairy cows compared with canola seeds; the two carinata co-products had higher rumen degraded protein than canola meal, but had lower intestinal digested protein; 3) both carinata seeds and co-products were higher in glucosinolates, most of which was allyl glucosinolate; 4) the hexane-extracted carinata presscake in this study had higher energy value, but showed lower intestinal absorbed protein supply to dairy cattle compared with carinata meal; 5) there were significant protein and carbohydrate structural differences among carinata and canola seeds, and among the three co-products; and 6) protein and carbohydrate structural spectral parameters had relationship with nutrient digestive features, could be used to predict nutrient bioavailability in dairy cattle.
Advisors/Committee Members: Yu, Peiqiang, Christensen, David A, McKinnon, John J, Mutsvangwa, Timothy, Oba, Masahito.
Subjects/Keywords: carinata; canola, dairy nutrition, molecular structure
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ban, Y. (2016). MOLECULAR STRUCTURAL, PHYSIOCHEMICAL AND NUTRITIONAL CHARACTERIZATION OF NEW LINES OF BRASSICA CARINATA AND THE CO-PRODUCTS. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/7376
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ban, Yajing. “MOLECULAR STRUCTURAL, PHYSIOCHEMICAL AND NUTRITIONAL CHARACTERIZATION OF NEW LINES OF BRASSICA CARINATA AND THE CO-PRODUCTS.” 2016. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/7376.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ban, Yajing. “MOLECULAR STRUCTURAL, PHYSIOCHEMICAL AND NUTRITIONAL CHARACTERIZATION OF NEW LINES OF BRASSICA CARINATA AND THE CO-PRODUCTS.” 2016. Web. 11 Apr 2021.
Vancouver:
Ban Y. MOLECULAR STRUCTURAL, PHYSIOCHEMICAL AND NUTRITIONAL CHARACTERIZATION OF NEW LINES OF BRASSICA CARINATA AND THE CO-PRODUCTS. [Internet] [Thesis]. University of Saskatchewan; 2016. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/7376.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ban Y. MOLECULAR STRUCTURAL, PHYSIOCHEMICAL AND NUTRITIONAL CHARACTERIZATION OF NEW LINES OF BRASSICA CARINATA AND THE CO-PRODUCTS. [Thesis]. University of Saskatchewan; 2016. Available from: http://hdl.handle.net/10388/7376
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
26.
Wiese, Brittany I 1988-.
DEFINING THE RISK, PREVALENCE, AND PATHOLOGICAL THRESOLD OF LOW RUMINAL pH IN FEELOT CATTLE.
Degree: 2017, University of Saskatchewan
URL: http://hdl.handle.net/10388/7770
► The diet transition phase is thought to be the highest risk period for development of low ruminal pH, while pathology associated with low reticulo-ruminal pH…
(more)
▼ The diet transition phase is thought to be the highest risk period for development of low ruminal pH, while pathology associated with low reticulo-ruminal pH (RRpH) induced ruminal acidosis (RA) is often found at slaughter, months after the diet transition. Two experiments were conducted to 1) determine the risk of low RRpH during the transition phase and 2) explore the association of rumen fermentation and acute phase protein response during finishing with pathology identified post mortem. In experiment 1, RRpH was measured in 32 mixed breed steers (n = 16) and heifers (n = 16) housed in commercial feedlot pens with 227 ±13 and 249 ± 6 hd/pen cohort steers and heifers, respectively. Cattle were transitioned from a diet containing 46.5% forage and 53.5% concentrate to a diet containing 9.5% forage and 90.5% concentrate dry matter (DM) basis) over 40 d. In addition, wheat replaced barley as the grain source during the dietary transition. Both mean and minimum RRpH decreased as the proportion of concentrate in the diet increased. The area (duration severity) that RRpH was < 5.6, duration that RRpH was <5.6, and the number of cattle experiencing a bout of low RRpH (pH < 5.6 for > 180 min), increased with increasing concentrate. Despite having a high risk for low RRpH, most cattle had only 1-3 bouts of low RRpH during the diet transition, and extent was mild. Steers had greater dry matter intake (DMI), lower RRpH, and greater standard deviation of RRpH than heifers, suggesting that susceptibility to RA may differ between steers and heifers. In experiment 2, ruminal pH, short-chain fatty acid concentrations and serum acute phase proteins were measured in 28 cannulated steers during the final 5 wk of finishing when fed a diet containing 5% forage and 95% concentrate (DM basis). Rumen and livers were examined and pathology scores were determined at slaughter. There was no difference in minimum pH, mean pH, or duration that ruminal pH was < 5.5 between steers with or without pathology. However, steers with pathology spent more time with ruminal pH < 5.2 and tended to spend more time with ruminal pH < 5.8. Acetate concentration tended to be greater in steers with pathology than without pathology. Serum amyloid A was greater and haptoglobin tended to be greater in steers with pathology than those without. Overall, liver and rumen pathology was associated with a greater duration that ruminal pH is < 5.2 and a chronic systemic acute phase protein response. In summary, feedlot cattle experience low RRpH during dietary transition and that the risk increases with increasing levels of concentrate. However, during the dietary transition the extent of low RRpH was mild. During the last 5 wk of finishing, the duration that ruminal pH was < 5.2 and the plasma concentration of serum amyloid A, were associated with greater rumen and liver pathology scores, suggesting that low ruminal pH occurring during the latter part of finishing may have an impact on risk for rumenitis and liver abscesses.
Advisors/Committee Members: Penner, Greg B, Campbell, John G, Jelinski, Murray, Hendrick, Steve, McKinnon, John J, Timsit, Eduoard, Harding, John.
Subjects/Keywords: acidosis; ruminal pH; feedlot cattle; liver abscess; acute phase protein
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wiese, B. I. 1. (2017). DEFINING THE RISK, PREVALENCE, AND PATHOLOGICAL THRESOLD OF LOW RUMINAL pH IN FEELOT CATTLE. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/7770
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wiese, Brittany I 1988-. “DEFINING THE RISK, PREVALENCE, AND PATHOLOGICAL THRESOLD OF LOW RUMINAL pH IN FEELOT CATTLE.” 2017. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/7770.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wiese, Brittany I 1988-. “DEFINING THE RISK, PREVALENCE, AND PATHOLOGICAL THRESOLD OF LOW RUMINAL pH IN FEELOT CATTLE.” 2017. Web. 11 Apr 2021.
Vancouver:
Wiese BI1. DEFINING THE RISK, PREVALENCE, AND PATHOLOGICAL THRESOLD OF LOW RUMINAL pH IN FEELOT CATTLE. [Internet] [Thesis]. University of Saskatchewan; 2017. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/7770.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wiese BI1. DEFINING THE RISK, PREVALENCE, AND PATHOLOGICAL THRESOLD OF LOW RUMINAL pH IN FEELOT CATTLE. [Thesis]. University of Saskatchewan; 2017. Available from: http://hdl.handle.net/10388/7770
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
27.
Good, Adriane Catherine 1993-.
EVALUATION OF CANOLA MEAL VERSUS SOYBEAN MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE: EFFECTS ON GROWTH PERFORMANCE, CARCASS CHARACTERISTICS, RUMEN FERMENTATION, AND NUTRIENT DIGESTION.
Degree: 2018, University of Saskatchewan
URL: http://hdl.handle.net/10388/8529
► The objective of this research was to determine the effect of canola meal (CM) as a protein supplement for beef cattle on growth performance, rumen…
(more)
▼ The objective of this research was to determine the effect of canola meal (CM) as a protein supplement for beef cattle on growth performance, rumen fermentation, and nutrient digestion compared to soybean meal (SBM) and wheat dried distillers’ grains with solubles (WDDGS). A 95-d backgrounding trial (Trial 1) and a 61-d backgrounding, 147-d finishing trial (Trial 2) were used to evaluate performance and carcass characteristics of feedlot cattle fed CM vs. SBM with or without WDDGS. In Trial 1, cattle fed SBM had greater ADG (P < 0.05) relative to cattle fed SBM+WDDGS but also numerically the highest feed cost of gain compared to the other three treatments. No other treatment differences were noted in Trial 1. In Trial 2, no treatment differences (P > 0.05) were detected for overall ADG, DMI, or gain : feed. Numerically, cattle fed SBM had the highest feed cost of gain with cattle fed WDDGS the lowest. Cattle fed SBM+WDDGS had the poorest fat deposition (P < 0.05) compared to cattle fed CM+WDDGS and WDDGS. However, no treatment differences were noted in final carcass value. A third trial using omasal, rumen, and fecal collections in heifers fed CM or SBM with or without WDDGS in a 4 x 4 Latin square was carried out to determine the effect of protein supplement on rumen fermentation, apparent and true ruminal nutrient digestibility, and total tract nutrient digestibility. Heifers fed WDDGS had lower (P < 0.05) DM, OM, and N intake than those not fed WDDGS. Heifers fed CM had the highest (P < 0.05) DM, OM, and N apparently and truly digested in the rumen compared to heifers fed SBM, and inclusion of WDDGS tended (P < 0.10) to decrease N truly digested in the rumen. There were no treatment differences (P > 0.05) noted in DM, OM, CP, ADF, or NDF digestibility. The results of all three trials indicate that CM is not different than SBM as protein supplement for feedlot cattle and that the inclusion of WDDGS did not improve feedlot performance, rumen fermentation, or nutrient digestibility.
Advisors/Committee Members: McKinnon, John J, Campbell, John R, Penner, Greg B, McAllister, Tim A, Mutsvangwa, Tim, Buchanan, Fiona C.
Subjects/Keywords: canola meal; wheat dried distillers' grains with solubles; soybean meal; beef cattle
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Good, A. C. 1. (2018). EVALUATION OF CANOLA MEAL VERSUS SOYBEAN MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE: EFFECTS ON GROWTH PERFORMANCE, CARCASS CHARACTERISTICS, RUMEN FERMENTATION, AND NUTRIENT DIGESTION. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/8529
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Good, Adriane Catherine 1993-. “EVALUATION OF CANOLA MEAL VERSUS SOYBEAN MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE: EFFECTS ON GROWTH PERFORMANCE, CARCASS CHARACTERISTICS, RUMEN FERMENTATION, AND NUTRIENT DIGESTION.” 2018. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/8529.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Good, Adriane Catherine 1993-. “EVALUATION OF CANOLA MEAL VERSUS SOYBEAN MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE: EFFECTS ON GROWTH PERFORMANCE, CARCASS CHARACTERISTICS, RUMEN FERMENTATION, AND NUTRIENT DIGESTION.” 2018. Web. 11 Apr 2021.
Vancouver:
Good AC1. EVALUATION OF CANOLA MEAL VERSUS SOYBEAN MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE: EFFECTS ON GROWTH PERFORMANCE, CARCASS CHARACTERISTICS, RUMEN FERMENTATION, AND NUTRIENT DIGESTION. [Internet] [Thesis]. University of Saskatchewan; 2018. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/8529.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Good AC1. EVALUATION OF CANOLA MEAL VERSUS SOYBEAN MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE: EFFECTS ON GROWTH PERFORMANCE, CARCASS CHARACTERISTICS, RUMEN FERMENTATION, AND NUTRIENT DIGESTION. [Thesis]. University of Saskatchewan; 2018. Available from: http://hdl.handle.net/10388/8529
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
28.
Fuhr, Leland Gustav Michael.
Low lignin hull, high oil groat oat grain in lactating dairy cow rations.
Degree: 2006, University of Saskatchewan
URL: http://hdl.handle.net/10388/etd-11142006-115408
► LLH-HOG oat grain (low in ADL and high in EE) was compared to Derby oat, and CDC Dolly barley grain. Twenty-one Suffolk wethers were randomly…
(more)
▼ LLH-HOG oat grain (low in ADL and high in EE) was compared to Derby oat, and CDC Dolly barley grain. Twenty-one Suffolk wethers were randomly assigned diets, 100% barley silage or barley silage with 50, 75, or 90% (DM) LLH-HOG oat or CDC Dolly barley. Apparent digestibility of DM, CP, EE, NDF, ADF, and GE were determined. Linear and quadratic regressions were fitted and apparent digestibility at 100% grain was determined. DM apparent digestibility was estimated at 79.1% for CDC Dolly barley and 74.0% for LLH-HOG oat grain. LLH-HOG oat provided 3550 Kcal per kg DE and CDC Dolly barley provided 3582 Kcal per kg DE. A non-lactating Holstein cow with a rumen fistula was used to determine LLH-HOG oat, Derby oat, and CDC Dolly barley grain degradability. Samples were incubated in the rumen for 48, 36, 24, 12, 08, 04, and 00 hour. The in situ degradability of DM, CP, and NDF were determined. An in vitro study was conducted using a Daisy II Incubator for incubations of 48, 30, and 24 hour. The DM ED of CDC Dolly barley (77.0%) was greater than both oat (68.0 and 68.9%). The NDF ED in LLH-HOG oat (26.6%) was higher than that of Derby oat (24.0%). Nine lactating Holsteins were randomly assigned treatments in a triple replicate three x three Latin square. Treatments were 50:50 forage to concentrate (DM basis) TMR with grain sources of CDC Dolly barley, Derby oat, or LLH-HOG oat. Milk production, dietary consumption data, and apparent digestibility were collected. DMI of the different TMR were similar. Milk yield tended (P=0.09) to be highest in LLH-HOG oat fed cows. FCM, MF, and MP yields were not different. MP concentration was lowest in LLH-HOG oat fed cows. Cows fed LLH-HOG oat, compared to Derby oat, trended (P=0.08) towards requiring less DM to produce 100 kg FCM. The TMR DE and apparent digestibility of DM and NDF were higher in cows fed LLH-HOG or CDC Dolly barley compared to Derby oat. LLH-HOG oat had superior nutritional characteristics for dairy cows compared to conventional oat and was equal to barley.
Advisors/Committee Members: Christensen, David A., Rossnagel, Brian G., Racz, Vern, McKinnon, John J..
Subjects/Keywords: lactation; cattle; ruminant
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APA ·
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APA (6th Edition):
Fuhr, L. G. M. (2006). Low lignin hull, high oil groat oat grain in lactating dairy cow rations. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-11142006-115408
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fuhr, Leland Gustav Michael. “Low lignin hull, high oil groat oat grain in lactating dairy cow rations.” 2006. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/etd-11142006-115408.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fuhr, Leland Gustav Michael. “Low lignin hull, high oil groat oat grain in lactating dairy cow rations.” 2006. Web. 11 Apr 2021.
Vancouver:
Fuhr LGM. Low lignin hull, high oil groat oat grain in lactating dairy cow rations. [Internet] [Thesis]. University of Saskatchewan; 2006. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/etd-11142006-115408.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fuhr LGM. Low lignin hull, high oil groat oat grain in lactating dairy cow rations. [Thesis]. University of Saskatchewan; 2006. Available from: http://hdl.handle.net/10388/etd-11142006-115408
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
29.
Sebastian, Thomas.
Temperament in beef cattle : methods of measurement, consistency and relationship to production.
Degree: 2007, University of Saskatchewan
URL: http://hdl.handle.net/10388/etd-12112007-213618
► Two behavioural studies were conducted at the University of Saskatchewan beef feedlot. In the first study, the temperament of 400 steers was determined using both…
(more)
▼ Two behavioural studies were conducted at the
University of
Saskatchewan beef feedlot. In the first study, the temperament of 400 steers was determined using both objective and subjective measures. The consistency of temperament, over repeated tests and between different measures, was also tested. The objective behavioural tests were conducted during the individual restraint of the steers using strain gauges and an MMD (movement-measuring-device). The time required for the steers to exit the area was also recorded. Subjective assessment of animals’ responsiveness during restraint was recorded on a scale of 1-5 (calm to wild). The consistency of individual differences in a steer’s response within the evaluation series and across repetitions, shows that this trait may represent a stable ‘personality’ of the animal. The significant relationship between objective and subjective measures demonstrates that objective measures of temperament can be used to replace the traditional subjective scale as it has the added advantage of reducing inter- and intra-observer variability. The positive relationship of subjective scores and MMD values with the steers performance (average daily weight gain) shows not only that a calm temperament is conducive to productivity, but also that objective measures can replace subjective techniques for assessing temperament for performance evaluation. In the second study the reactivity of a subset of the original 400 steers (262 animals from 8 pens) to a novel stimulus was assessed. The purpose of this experiment was to determine if a steers’ behavioural response in the novel test was correlated to its’ temperament assessment determined in the first study. A remote controlled ball was dropped from the ceiling of a salt feeder while a steer licked the salt. Two overhead cameras connected to a monitor through a VCR and time lapse recorder permitted us to observe and document the response. A lack of correlation between measures of handling and novelty measures show that reactivity of animals in the handling chute and their responsiveness to the novel stimulus do not represent one and the same trait.
Advisors/Committee Members: Stookey, Joseph M., McKinnon, John J., Gonyou, Harold W., Carruthers, Terry D., Buchanan, Fiona C..
Subjects/Keywords: movement measuring device; strain gauge; exit time; temperament; beef cattle
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sebastian, T. (2007). Temperament in beef cattle : methods of measurement, consistency and relationship to production. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-12112007-213618
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sebastian, Thomas. “Temperament in beef cattle : methods of measurement, consistency and relationship to production.” 2007. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/etd-12112007-213618.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sebastian, Thomas. “Temperament in beef cattle : methods of measurement, consistency and relationship to production.” 2007. Web. 11 Apr 2021.
Vancouver:
Sebastian T. Temperament in beef cattle : methods of measurement, consistency and relationship to production. [Internet] [Thesis]. University of Saskatchewan; 2007. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/etd-12112007-213618.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sebastian T. Temperament in beef cattle : methods of measurement, consistency and relationship to production. [Thesis]. University of Saskatchewan; 2007. Available from: http://hdl.handle.net/10388/etd-12112007-213618
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan
30.
Kusler, Justin P.
Comparing simple and complex native forage mixtures for grazing cattle in southwestern Saskatchewan.
Degree: 2009, University of Saskatchewan
URL: http://hdl.handle.net/10388/etd-12292009-102319
► Diverse forage mixtures have improved resilience to drought, improved persistence, ability to adapt to changing environmental conditions, reduced fertilizer costs, improved root mass and greater…
(more)
▼ Diverse forage mixtures have improved resilience to drought, improved persistence, ability to adapt to changing environmental conditions, reduced fertilizer costs, improved root mass and greater soil carbon sequestration but do they improve forage and animal production. The objective was to determine if complex native forage mixtures provide superior nutritional quality throughout the grazing season as compared to simple native mixtures. Three studies were conducted in 2007 at Swift Current, SK to evaluate forage production potentials, nutritive qualities and in vitro dry matter digestibility of native and tame forage species common to or having potential in Southwestern
Saskatchewan. In study one, plots were seeded in 2006 on Chernozemic Orthic Brown Swinton Loam soils and consisted of 11 native and three tame monoculture species common to southwestern
Saskatchewan. Clippings at a 5 cm stubble height occurred on June 20 and every 28 days after until October 10. Forage DM production, in vitro OMD, NDF, ADF, ADL, CP, Ca and P concentrations were measured. As species matured, production and OMD declined (P¡Ü0.05) but NDF, ADF and ADL concentrations increased (P¡Ü0.05). There were harvest date by species differences (P¡Ü0.05) in forage production and nutritional qualities of C3 and C4 grass and legume species. Study two examined the in situ CP, NDF and DM disappearance of six selected species harvested in the fall. EDNDF and ADDM values did not differ (P>0.05) among C3 grasses. The C4 grasses had higher (P
Advisors/Committee Members: McKinnon, John J., Iwaasa, Alan D., Lardner, Herbert A., Walburger, Kenric, Laarveld, Bernard, Coulman, Bruce.
Subjects/Keywords: cool season grasses; warm season grasses; nutritive value of forages; grazing; legumes; forages; forage quality
Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kusler, J. P. (2009). Comparing simple and complex native forage mixtures for grazing cattle in southwestern Saskatchewan. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-12292009-102319
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kusler, Justin P. “Comparing simple and complex native forage mixtures for grazing cattle in southwestern Saskatchewan.” 2009. Thesis, University of Saskatchewan. Accessed April 11, 2021.
http://hdl.handle.net/10388/etd-12292009-102319.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kusler, Justin P. “Comparing simple and complex native forage mixtures for grazing cattle in southwestern Saskatchewan.” 2009. Web. 11 Apr 2021.
Vancouver:
Kusler JP. Comparing simple and complex native forage mixtures for grazing cattle in southwestern Saskatchewan. [Internet] [Thesis]. University of Saskatchewan; 2009. [cited 2021 Apr 11].
Available from: http://hdl.handle.net/10388/etd-12292009-102319.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kusler JP. Comparing simple and complex native forage mixtures for grazing cattle in southwestern Saskatchewan. [Thesis]. University of Saskatchewan; 2009. Available from: http://hdl.handle.net/10388/etd-12292009-102319
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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