+publisher:"University of Saskatchewan" +contributor:("Lardner, Herbert A.")

University of Saskatchewan

1. Dharmasiri Gamage, Ruwini. Utilization of Stockpiled Perennial Forages in Winter Feeding Systems for Beef Cattle.

Degree: 2014, University of Saskatchewan

URL: http://hdl.handle.net/10388/ETD-2014-04-1500

► Two experiments were conducted to determine the effects of grazing stockpiled perennial forage in field paddocks relative to feeding similar quality round bale hay in… (more)

▼ Two experiments were conducted to determine the effects of grazing stockpiled perennial forage in field paddocks relative to feeding similar quality round bale hay in drylot pens on rumen degradation characteristics of forage; beef cow performance, cow reproductive efficiency, estimated dry matter intake and forage utilization, forage yield and quality, soil nutrients and system costs. Winter feeding systems were (i) stockpiled perennial forage (TDN = 58.9%; CP = 8.5%) grazing (SPF) and (ii) drylot feeding (DL) of round bale hay (TDN = 57.9%; CP = 8.4%). Experiment I was an in situ study, where five Hereford heifers (398 ± 14 kg) fitted with rumen cannulae were fed a grass hay (DM = 93.2%; TDN = 50.8%; CP = 9.8%; NDF = 66.2%) diet. In situ degradability of both stockpiled forage (SPF) and round bale hay (BH) samples collected at start (October) and end (December) of the field study were determined. The soluble fraction (S) of DM was greater (P = 0.01) in SPF October forage compared to SPF December, BH October and BH December forages. The potentially degradable fraction (D) of CP was lowest (P = 0.04) in BH December forage than in SPF October, SPF December and BH October forages suggesting that hay quality declined more rapidly than stockpiled forage and method of preservation may have affected overall hay quality. Furthermore, D fraction of both ADF and NDF was higher in SPF samples suggesting stockpiled forage may be more digestible than hay. However, the D fraction of NDF in both SPF and BH forages declined with later sampling date possibly due to effect of weathering and leaf loss. In Experiment II, 6, 4-ha paddocks consisting of meadow bromegrass (Bromus riparius Rehm) and alfalfa (Medicago sativa), were randomly assigned to 1 of 2 replicated (n = 3) winter feeding systems. In this study 58 dry pregnant (120 ± 16 d) Angus cows (675 kg ± 51 kg), stratified by body weight (BW; corrected for conceptus gain), were allocated to either the SPF or DL systems. Cows in winter feeding systems were provided additional energy supplement (rolled barley) (TDN = 86.4%; CP = 12.4%) depending on environmental conditions to maintain body condition, with no weight gain above that of conceptus growth. Dry matter intake (DMI) and forage utilization were estimated using the herbage weight disappearance method. The effects of winter feeding systems on soil nutrients were determined the following spring after winter grazing. Forage yield in DL (4683 ± 495 kg ha-1) and SPF (4032 ± 495 kg ha-1) systems was not different (P = 0.18) between treatments. However, forage utilization was lower (P < 0.01) in SPF (83.5%) than the DL (94.4%) system, signifying lower accessibility to stockpiled forage due to snow depth, lower temperatures, freezing rain and wind. Cows in the SPF system had higher forage DMI (P = 0.04) and supplementation intake (P < 0.01) compared to cows in drylot pens likely a combined effect of effective ambient temperatures below the lower critical temperature (LCT) during the grazing period and the higher potentially… Advisors/Committee Members: Lardner, Herbert A., Penner, Gregory B., Schoenau, Jeff J..

Subjects/Keywords: stockpiled perennial forages; drylot; beef cows

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APA (6^th Edition):

Dharmasiri Gamage, R. (2014). Utilization of Stockpiled Perennial Forages in Winter Feeding Systems for Beef Cattle. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2014-04-1500

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dharmasiri Gamage, Ruwini. “Utilization of Stockpiled Perennial Forages in Winter Feeding Systems for Beef Cattle.” 2014. Thesis, University of Saskatchewan. Accessed March 02, 2021. http://hdl.handle.net/10388/ETD-2014-04-1500.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dharmasiri Gamage, Ruwini. “Utilization of Stockpiled Perennial Forages in Winter Feeding Systems for Beef Cattle.” 2014. Web. 02 Mar 2021.

Vancouver:

Dharmasiri Gamage R. Utilization of Stockpiled Perennial Forages in Winter Feeding Systems for Beef Cattle. [Internet] [Thesis]. University of Saskatchewan; 2014. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10388/ETD-2014-04-1500.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dharmasiri Gamage R. Utilization of Stockpiled Perennial Forages in Winter Feeding Systems for Beef Cattle. [Thesis]. University of Saskatchewan; 2014. Available from: http://hdl.handle.net/10388/ETD-2014-04-1500

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan

2. 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 (6^th 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 (16^th 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 March 02, 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 (7^th 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. 02 Mar 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 Mar 02]. 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

3. 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 · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 02, 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 (7^th 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. 02 Mar 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 Mar 02]. 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

4. 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)

Subjects/Keywords: cool season grasses; warm season grasses; nutritive value of forages; grazing; legumes; forages; forage quality

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Kusler, Justin P. “Comparing simple and complex native forage mixtures for grazing cattle in southwestern Saskatchewan.” 2009. Thesis, University of Saskatchewan. Accessed March 02, 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 (7^th Edition):

Kusler, Justin P. “Comparing simple and complex native forage mixtures for grazing cattle in southwestern Saskatchewan.” 2009. Web. 02 Mar 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 Mar 02]. 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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