subject:(feedlot performance)

Colorado State University

1. Caldera, Emmanuel. Effect of zinc concentration and source on performance and carcass characteristics of feedlot steers.

Degree: MS(M.S.), Animal Sciences, 2012, Colorado State University

URL: http://hdl.handle.net/10217/73553

► Three-hundred and sixty cross-bred steers (348.1 kg ± 28.9) were utilized to investigate the effects of zinc (Zn) concentration on performance and carcass characteristics of… (more)

▼ Three-hundred and sixty cross-bred steers (348.1 kg ± 28.9) were utilized to investigate the effects of zinc (Zn) concentration on performance and carcass characteristics of feedlot steers. Steers were blocked by weight and randomly assigned to one of the 5 supplemental Zn treatments (8 pens per treatment; 9 hd per pen). Treatments consisted of: 1) Control-50 (CON-50; 50 mg of supplemental Zn/kg DM from ZnSO4); 2) Methionine control [MetCON-50; 50 mg of supplemental Zn/kg DM from ZnSO4 plus MHA to equalize HMTBa concentrations across treatments; 3) Organic-50 (ORG-50; Control diet supplemented with 50 mg of Zn/kg DM from Mintrex Zn plus MHA to equalize HMTBa intake across treatments); 4) Organic-100 (ORG-100; Control diet supplemented with 100 mg of Zn/kg DM from MINTREX Zn plus MHA to equalize HMTBa intake across treatments 2-5); and 5) Organic-150 (ORG-150; Control diet supplemented with 150 mg of Zn/kg DM from Mintrex Zn). All steers were fed a typical high concentrate steam-flaked corn based finishing diet twice daily. Steers were individually weighed on d −1, 0, 144, and 145 and pen weighed on d 28, 56, 84, and 111. Ractopamine HCl was fed for the final 29 d of the finishing period to all treatments. On d 145, steers were transported to a commercial abattoir for slaughter. Initial and final body weight, ADG, DMI, and feed efficiency (g/f), were similar across treatments. However, there was a diff (P < 0.04) for ADG to be increased when MetCON-50 was compared to Con-50 on d-56 pen weigh and d-84 pen weigh (3.91, 4.42 ± 0.17 and 4.96, 4.29 ± 0.21 respectively). ADG was also increased (P <0.03) when the CON-50 treatment was compared to the ORG-50 treatment for the d-84 pen weigh period (4.96, 4.29 ± 0.21). There was a trend (P< 0.07) for gain:feed to be increased for the CON-50 when compared to MetCON-50 and ORG-50 for the d57-84 period (0.228, 0.198, 0.199 ± 0.01). Fat thickness, internal fat, hot carcass weight, KPH, marbling score, and dressing percentage were similar across treatments. Steers receiving ORG-150 had a greater (P < 0.03) yield grade compared to steers receiving ORG-50 (2.99 vs. 2.76 ± 0.08; respectively). Steers receiving 1080 Zn also had a greater (P < 0.01) yield grade compared to steers receiving ORG-100 (2.99 vs. 2.68 ± 0.08; respectively). There was a trend (P < 0.07) for steers receiving MetCON to have a greater yield grade compared to CON-50 (2.82 vs. 2.67 ± 0.08; respectively). In addition, liver biopsies and blood samples were analyzed for Zn, Cu, and Fe concentrations as well as alkaline phosphatase in the blood. Initial liver biopsies were similar in Cu and Fe among treatments. Whereas, the Zn concentrations were greater (P < 0.01) in the CON-50 group compared to the Methionine treatment group (218.7 vs. 170.2 ± 12.9). Day 111 liver Zn concentrations tended ( P < 0.05) to be lower for CON-50 and MetCON-50 treatments compared to ORG-50 treatment, while no other differences were noted among treatments (117.8, 123.7 vs. 158.0 ± 16.1). Day-0 plasma results indicate levels of Zn, Cu,… Advisors/Committee Members: Engle, Terry (advisor), Wagner, John J. (advisor), Pritchett, James G. (committee member).

Subjects/Keywords: carcass characteristics; zinc; performance; feedlot

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

APA (6^th Edition):

Caldera, E. (2012). Effect of zinc concentration and source on performance and carcass characteristics of feedlot steers. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/73553

Chicago Manual of Style (16^th Edition):

Caldera, Emmanuel. “Effect of zinc concentration and source on performance and carcass characteristics of feedlot steers.” 2012. Masters Thesis, Colorado State University. Accessed April 14, 2021. http://hdl.handle.net/10217/73553.

MLA Handbook (7^th Edition):

Caldera, Emmanuel. “Effect of zinc concentration and source on performance and carcass characteristics of feedlot steers.” 2012. Web. 14 Apr 2021.

Vancouver:

Caldera E. Effect of zinc concentration and source on performance and carcass characteristics of feedlot steers. [Internet] [Masters thesis]. Colorado State University; 2012. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10217/73553.

Council of Science Editors:

Caldera E. Effect of zinc concentration and source on performance and carcass characteristics of feedlot steers. [Masters Thesis]. Colorado State University; 2012. Available from: http://hdl.handle.net/10217/73553

Kansas State University

2. Van Bibber-Krueger, Cadra. Mineral supplementation of feedlot cattle.

Degree: PhD, Department of Animal Sciences and Industry, 2016, Kansas State University

URL: http://hdl.handle.net/2097/32646

► Four studies evaluated effects of mineral supplementation on feedlot performance, carcass characteristics and ruminal fermentation of finishing cattle. Study 1 supplemented 0 or 3.3 g/d… (more)

▼ Four studies evaluated effects of mineral supplementation on feedlot performance, carcass characteristics and ruminal fermentation of finishing cattle. Study 1 supplemented 0 or 3.3 g/d yeast combined with Cr propionate to steers separated into light and heavy groups. No treatment x weight group interactions were observed for ADG, DMI, final BW, carcass traits, or plasma glucose of lactate concentrations (P ≥ 0.06). A treatment x weight group interaction was observed for G:F (P = 0.03). In study 2, steers were supplemented 60 or 300 mg Zn/kg DM with or without zilpaterol hydrochloride (ZH). No interactions or effects of Zn or ZH were observed for IGF-1, plasma glucose, or lactate concentrations (P > 0.05). Plasma urea nitrogen (PUN) concentration decreased with ZH (P < 0.01). No interactions or effects of Zn or ZH were detected for ADG, DMI, final BW, G:F, and carcass traits were minimally affected (P ≥ 0.05). Study 3 evaluated effects of supplementing 30 or 100 mg Zn/kg DM (30 or 100Zn) with and without ractopamine hydrochloride (RH; 200 mg/d). No interactions or effects of Zn were observed for feedlot performance or PUN (P ≥ 0.07). Final BW, ADG, and HCW increased when heifers were fed RH (P ≤ 0.02). Zinc x RH interactions were observed for LM area and yield grade (P ≤ 0.01), but other carcass traits were not affected (P ≥ 0.08). In study 4, heifers were supplemented 0, 30, 60, or 90 mg Zn/kg DM. Zinc supplementation did not affect final BW, ADG, or DMI (P ≥ 0.07), but G:F increased linearly (P = 0.02). Carcass traits were not affected by Zn supplementation (P ≥ 0.07). Effects of in vitro Zn titration (0, 30, 60, 60, 90, 120, or 150 mg/kg Zn) were evaluated using ground corn and soybean meal as substrate. In vitro fermentation was not affected by added Zn (P ≥ 0.05). These studies suggest Cr and Zn supplementation minimally affected carcass traits, but Zn supplementation up to 60 mg/kg improved feed efficiency with minimal impact on ruminal fermentation. Supplementing increased Zn concentrations may alter fat and muscle deposition when fed with RH. Advisors/Committee Members: James S. Drouillard.

Subjects/Keywords: Zinc; Finishing cattle; Chromium propionate; Feedlot performance

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

APA (6^th Edition):

Van Bibber-Krueger, C. (2016). Mineral supplementation of feedlot cattle. (Doctoral Dissertation). Kansas State University. Retrieved from http://hdl.handle.net/2097/32646

Chicago Manual of Style (16^th Edition):

Van Bibber-Krueger, Cadra. “Mineral supplementation of feedlot cattle.” 2016. Doctoral Dissertation, Kansas State University. Accessed April 14, 2021. http://hdl.handle.net/2097/32646.

MLA Handbook (7^th Edition):

Van Bibber-Krueger, Cadra. “Mineral supplementation of feedlot cattle.” 2016. Web. 14 Apr 2021.

Vancouver:

Van Bibber-Krueger C. Mineral supplementation of feedlot cattle. [Internet] [Doctoral dissertation]. Kansas State University; 2016. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2097/32646.

Council of Science Editors:

Van Bibber-Krueger C. Mineral supplementation of feedlot cattle. [Doctoral Dissertation]. Kansas State University; 2016. Available from: http://hdl.handle.net/2097/32646

Iowa State University

3. Njoka, Josephat Gichobi. Evaluating impact of diet, housing and season systems on feedlot cattle finishing programs.

Degree: 2014, Iowa State University

URL: https://lib.dr.iastate.edu/etd/13788

► ABSTRACT A four-year study was conducted using 1,987 yearling steers of predominantly mixed British breeds with an average starting weight of approximately 700 lb. The… (more)

▼ ABSTRACT A four-year study was conducted using 1,987 yearling steers of predominantly mixed British breeds with an average starting weight of approximately 700 lb. The overall objectives of this study was to evaluate feedlot performance, carcass characteristics and expected economic projections for placing steers on feed quarterly per year for a period of 4 yr in different housing-diet systems. A pen with an average of 20 steers was the experimental unit, which was replicated once at the start of every trial period. Treatments were 2-levels of diet, 3-levels of housing, and season with 4-levels per year. The two diets were: 1) a mixture of processed high moisture corn grain (77% DM) providing 85% of the energy and whole plant corn silage, 2) a whole plant corn silage diet (35% DM). In addition, protein, vitamin and mineral supplement was provided to meet dietary requirements. Cattle were fed once per day in the morning. The housing treatments consisted of: 1) shelter; open lot with access to overhead shelter, 2) no shelter; open lot without access to an overhead shelter, but provided with a windbreak, 3) confinement; open front-side confinement barn. The four seasons involved were when steers were placed into the feedlot and fed through to market weight as follows: 1) December; winter, 2) March; spring, 3) June; summer and 4) September; fall. The effects of diet, housing, season, and cycle influenced ADG and final weight (P < 0.001), as well as the interaction of diet Ã? season (P < 0.05), but did not affect ADMI (P > 0.05). The FE was affected significantly by diet (P < 0.001) as well as the year and interaction of diet Ã? season (P < 0.05). The effects of diet, housing, season and year affected HCW and DP (P < 0.001). In addition, BF, KPH, YG and QG were affected by dietary treatment (P < 0.001) and season (P < 0.05), but not by the effects of housing (P > 0.05). Within the economic analysis using the annual scenario, shelter corn (SC) steers had 3.2% higher income per head than those in shelter silage (SS) facilities. Moreover, steers in no shelter corn (NSC) groups had 3.9% better income per animal than cattle fed in no shelter silage (NSS). Besides, steers fed in confinement corn (CC) received 2.2% higher income per head compared to those fed in confinement silage (CS) system. Overall, SC steers had the highest income per head, with a 6% advantage over the CS group, which had the lowest income per head. Steers that were put into the feedlot during the months of December, March, June and September and fed a corn-based diet had better returns than those fed a corn silage-based diet. Winter steers in NSS had the lowest income, which represented 7.4% difference between the highest incomes attained by steers in SC system. During spring and summer, the SC system had the highest income per steer, followed by NSC and then the CC group.

Subjects/Keywords: biometeorology; carcass characteristics; economics; feedlot cattle; feedlot performance; Agriculture; Animal Sciences; Physiology

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APA (6^th Edition):

Njoka, J. G. (2014). Evaluating impact of diet, housing and season systems on feedlot cattle finishing programs. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/13788

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):

Njoka, Josephat Gichobi. “Evaluating impact of diet, housing and season systems on feedlot cattle finishing programs.” 2014. Thesis, Iowa State University. Accessed April 14, 2021. https://lib.dr.iastate.edu/etd/13788.

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

MLA Handbook (7^th Edition):

Njoka, Josephat Gichobi. “Evaluating impact of diet, housing and season systems on feedlot cattle finishing programs.” 2014. Web. 14 Apr 2021.

Vancouver:

Njoka JG. Evaluating impact of diet, housing and season systems on feedlot cattle finishing programs. [Internet] [Thesis]. Iowa State University; 2014. [cited 2021 Apr 14]. Available from: https://lib.dr.iastate.edu/etd/13788.

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

Council of Science Editors:

Njoka JG. Evaluating impact of diet, housing and season systems on feedlot cattle finishing programs. [Thesis]. Iowa State University; 2014. Available from: https://lib.dr.iastate.edu/etd/13788

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

4. Murillo Alves Porto Meschiatti. Substituição do milho moído por co-produtos da indústria de processamento do ácido cítrico em dietas de terminação de bovinos em confinamento.

Degree: 2015, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/11/11139/tde-17092015-151824/

►

O objetivo desse experimento foi avaliar a inclusão (7 e 15% com base em MS), de 2 co-produtos, derivados da indústria de ácido cítrico: Micélio… (more)

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O objetivo desse experimento foi avaliar a inclusão (7 e 15% com base em MS), de 2 co-produtos, derivados da indústria de ácido cítrico: Micélio (77% de FDN e 0,5% de lignina com base em MS) e Raffinate (25,5% de açúcares solúveis e 32% de fibra solúvel com base em MS) em dietas com alto teores de milho do tipo Flint para 200 tourinhos Nelore em terminação (peso inicial = 396,4 ± 37,7kg). Os animais foram blocados com base no peso inicial e foram distribuídos aleatoriamente em 25 baias. A dieta controle conteve 11,73% de bagaço de cana de açúcar, 67,2% de milho moído, 18% de farelo proteinoso de milho, 2,07% de suplemento mineral e 1% de ureia. Os outros 4 tratamentos foram: Micélio 7, Micélio 15, Raffinate 7 e Raffinate 15. Os co-produtos substituíram parcialmente o milho nas dietas. Os parâmetros avaliados foram ingestão de matéria seca (IMS), ganho médio diário (GMD), eficiência alimentar (GMD/IMS) e características de carcaça. Os dados foram analisados pelo PROC MIXED do SAS e as médias foram comparadas por contrastes, considerando blocos como efeito aleatório e tratamento como efeito fixo. A inclusão de 7 e 15% de Micélio na dieta (base seca) em substituição parcial ao milho \"flintm̈oído aumentou (P=0,1) de forma quadrática o CMS. Já os animais alimentados com dietas contendo Raffinate apresentaram aumento linear no CMS (P<0,1) em relação ao tratamento controle e também maior CMS quando comparados com os animais que receberam o tratamento Micélio (P<0,1). Não houve diferença na eficiência alimentar (GPD/CMS) entre os tratamentos (P > 0,1). A inclusão de ambos co-produtos (Micélio ou Rafinatte) resultou em aumento no GDP dos animais (P< 0,1). O efeito positivo foi quadrático (P<0,1) para a inclusão de Micélio e linear (P<0,1) para a inclusão de Raffinate. A densidade energética das dietas não foi alterada pela inclusão de co-produtos. Não houve efeito de tratamento (P> 0.01) para as características de carcaça. Os valores médios para rendimento de carcaça (%), espessura de gordura subcutânea (mm) e áreas de olho de lombo (cm2) foram 53,79, 2,84 e 64,08 respectivamente. A inclusão de 7% de Micélio ou de 15% de Raffinate melhora o GPD dos animais em virtude do maior CMS. Micélio, Rafinate e milho \"flintm̈oído têm o mesmo valor energético para bovinos em Terminação.

The objective of this experiment was to evaluate the inclusion (7 and 15%, DM basis) of two corn by-products derived from the citric acid industry: Micelio (77% NDF, 0.5% lignin, DM basis) and Raffinate (25.5% soluble sugars, 32% soluble fiber, DM basis) in diets with high levels of flint corn fed to 200 finishing Nellore bulls (initial BW = 396.4 ± 37.7 kg). Animals were blocked according to initial BW and randomly allocated to 25 pens. The control diet contained 11.73% sugarcane bagasse, 67.2% corn, 18% corn gluten feed, 2.07% mineral supplement and 1% urea. The other four treatments were Micelio 7, Micelio 15, Raffinate 7 and Raffinate15. The by-products partially replaced corn in the diets. The parameters evaluated were dry matter…

Advisors/Committee Members: Flavio Augusto Portela Santos, Diogo Fleury Azevedo Costa, Alexandre Mendonça Pedroso.

Subjects/Keywords: Co-produtos; Confinamento; Performance; By-products; Feedlot; Performance

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

APA (6^th Edition):

Meschiatti, M. A. P. (2015). Substituição do milho moído por co-produtos da indústria de processamento do ácido cítrico em dietas de terminação de bovinos em confinamento. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/11/11139/tde-17092015-151824/

Chicago Manual of Style (16^th Edition):

Meschiatti, Murillo Alves Porto. “Substituição do milho moído por co-produtos da indústria de processamento do ácido cítrico em dietas de terminação de bovinos em confinamento.” 2015. Masters Thesis, University of São Paulo. Accessed April 14, 2021. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-17092015-151824/.

MLA Handbook (7^th Edition):

Meschiatti, Murillo Alves Porto. “Substituição do milho moído por co-produtos da indústria de processamento do ácido cítrico em dietas de terminação de bovinos em confinamento.” 2015. Web. 14 Apr 2021.

Vancouver:

Meschiatti MAP. Substituição do milho moído por co-produtos da indústria de processamento do ácido cítrico em dietas de terminação de bovinos em confinamento. [Internet] [Masters thesis]. University of São Paulo; 2015. [cited 2021 Apr 14]. Available from: http://www.teses.usp.br/teses/disponiveis/11/11139/tde-17092015-151824/.

Council of Science Editors:

Meschiatti MAP. Substituição do milho moído por co-produtos da indústria de processamento do ácido cítrico em dietas de terminação de bovinos em confinamento. [Masters Thesis]. University of São Paulo; 2015. Available from: http://www.teses.usp.br/teses/disponiveis/11/11139/tde-17092015-151824/

5. Linton, Kathryn. Evaluation of roughage inclusion rate within a total mixed ration effects on feedlot performance, carcass characteristics, and fatty acid composition of subcutaneous adipose, intramuscular adipose, and muscle tissue of Wagyu cattle.

Degree: MS(M.S.), Animal Sciences, 2015, Colorado State University

URL: http://hdl.handle.net/10217/170297

► The objective of this study was to investigate the effect of roughage inclusion rate of 10, 20, and 30% within a total mixed ration on… (more)

▼ The objective of this study was to investigate the effect of roughage inclusion rate of 10, 20, and 30% within a total mixed ration on feedlot performance, carcass composition and marbling distribution in Wagyu cattle (n=41). Upon arrival, cattle were acclimated to bunk style feeding. Initial body weights were collected. Animals were blocked by sex and weight to be assigned to 1 of 3 roughage inclusion rate treatments. Treatments included 1) 10% roughage inclusion on dry matter basis; 2) 20% roughage inclusion and 3) 30% roughage inclusion on dry matter basis. Diets were formulated to be isoenergentic, isonitrogenous, and isoamylolytic. Animals were weighed every 7d. For harvest animals were transported to a commercial abattoir. Hot carcass weight (HCW) was determined at time of harvest, intramuscular adipose, and subcutaneous adipose tissue was collected at harvest and snap frozen for analysis of FA composition. Longissimus muscle area (LMA) and backfat (BF) carcass measurements were determined after 21d storage at 0° C chill. A 1.25 cm cross section of longissimus dorsi at 12th and 13th rib interface was collected for Computer Vision System Ribeye Camera evaluation of marbling distribution. Limited treatment effects were observed. Feedlot performance and carcass characteristics were not significantly affected by roughage inclusion rate (P>0.05). Treatment presented a significant effect on Linoleic acid (C18:3) concentration within the longissimus muscle tissue (P=0.05). Concentration of C18:3 increased with increased roughage inclusion rate. Fatty acid profiles for LM, IMF and SQ tissues were similar across treatments. There was not treatment effect for marbling distribution collected via Computer Vision System Ribeye Camera evaluation. Overall, the data suggests that roughage inclusion rate causes very little impact on feedlot performance, carcass characteristics, fatty acid composition and marbling distribution in Wagyu cattle. Advisors/Committee Members: Peel, Kraig (advisor), Archibeque, Shawn (committee member), Holt, Timothy (committee member).

Subjects/Keywords: fatty acid composition; feedlot performance; marbling distribution; roughage inclusion; Wagyu

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

APA (6^th Edition):

Linton, K. (2015). Evaluation of roughage inclusion rate within a total mixed ration effects on feedlot performance, carcass characteristics, and fatty acid composition of subcutaneous adipose, intramuscular adipose, and muscle tissue of Wagyu cattle. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/170297

Chicago Manual of Style (16^th Edition):

Linton, Kathryn. “Evaluation of roughage inclusion rate within a total mixed ration effects on feedlot performance, carcass characteristics, and fatty acid composition of subcutaneous adipose, intramuscular adipose, and muscle tissue of Wagyu cattle.” 2015. Masters Thesis, Colorado State University. Accessed April 14, 2021. http://hdl.handle.net/10217/170297.

MLA Handbook (7^th Edition):

Linton, Kathryn. “Evaluation of roughage inclusion rate within a total mixed ration effects on feedlot performance, carcass characteristics, and fatty acid composition of subcutaneous adipose, intramuscular adipose, and muscle tissue of Wagyu cattle.” 2015. Web. 14 Apr 2021.

Vancouver:

Linton K. Evaluation of roughage inclusion rate within a total mixed ration effects on feedlot performance, carcass characteristics, and fatty acid composition of subcutaneous adipose, intramuscular adipose, and muscle tissue of Wagyu cattle. [Internet] [Masters thesis]. Colorado State University; 2015. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10217/170297.

Council of Science Editors:

Linton K. Evaluation of roughage inclusion rate within a total mixed ration effects on feedlot performance, carcass characteristics, and fatty acid composition of subcutaneous adipose, intramuscular adipose, and muscle tissue of Wagyu cattle. [Masters Thesis]. Colorado State University; 2015. Available from: http://hdl.handle.net/10217/170297

Iowa State University

6. Purevjav, Tsengeg. Effects of functional oils and monensin on cattle finishing programs.

Degree: 2011, Iowa State University

URL: https://lib.dr.iastate.edu/etd/10176

► The objectives of this experiment were to evaluate the use of functional oils (FO) mixture and EssentialTM, with and without ionophores on feedlot performance, carcass… (more)

▼ The objectives of this experiment were to evaluate the use of functional oils (FO) mixture and EssentialTM, with and without ionophores on feedlot performance, carcass characteristics and economic analysis of cattle drylot finishing programs. The FO, natural products composed of cashew nut shell oil and castor oil, have been introduced into the United States because they are thought to offer similar benefits as ionophores without the drawbacks of being synthetic products. A two-trial study was conducted using 120 (322 y 10 kg) Angus and Angus crossbred steer calves in each trial. Calves were weighed and assigned to five treatment groups by weight and color pattern, with four replications and six cattle per replication in each trial. Treatments were: control, no additives (CON); monensin, 223 mg·hd<-l/super>·d<-l/super> (MON); monensin, 223 mg·hd<-l/super>·d<-l/super> + functional oils, 250 mg·kg<-l/super> DMI (MON+FL); functional oils low, 250 mg·kg<-l/super> DMI (FL); and functional oils high, 500 mg·kg<-l/super> DMI (FH). All steers were fed the same diet (0.29 Mcal of NEg/kg DM, 0.41 Mcal of NEm/kg DM) on an ad libitum basis. In the first trial, steers were fed on average for 169 days, and in the second trial, 161 days. The daily DMI was not affected by FO. The MON treatment improved cattle ADG and FE when compared with FL and FH treatments (P < 0.05). The FH treated cattle had a higher percentage of liver abscesses compared with the MON treatment cattle (P < 0.05) and cattle in other treatments. The FH cattle had the highest dressing percentages (DP) among treatments and differed from MON and FL (P < 0.05), but not from CON and MON+FL treatments (P > 0.05). The FH cattle had the largest REA and differed from MON (P < 0.05). However, BF thickness was not different among treatments (P > 0.05). Although, YG for all treatments were YG 2, MON+FL treatment cattle had the best cutability and differed from MON treatment cattle (P < 0.05), but not from CON, FL and FH treatments (P > 0.05). Quality grade was not different (P > 0.05) among treatments. The percentage of Choice and Prime carcasses, however, tended to increase with levels of FO in the diets. The FH cattle had the most Prime grade carcasses and differed from CON and MON+FL treatments (P < 0.05), but not from MON and FL treatments (P > 0.05). Using actual costs and prices, profitability was numerically highest for the MON+FL treatment cattle. The MON treatment cattle tended to have the lowest profitability. Carcass price provided the greatest impact on profitability, followed by feeder price and then corn price when using actual costs and prices. Plus and minus 5% sensitivity analyses for corn, feeder and fed cattle price followed the same trend. When using annual and seasonal price scenarios, profitability favored the FH treatment cattle, presumably a result of their higher percentage of Prime and Choice carcasses. From these results, it is suggested that steer calves provided FO in their diet showed tolerable and similar ADG and FE, and produced carcasses with…

Subjects/Keywords: feedlot cattle; functional oils; ionophore; performance; profit; Animal Sciences

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APA (6^th Edition):

Purevjav, T. (2011). Effects of functional oils and monensin on cattle finishing programs. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/10176

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):

Purevjav, Tsengeg. “Effects of functional oils and monensin on cattle finishing programs.” 2011. Thesis, Iowa State University. Accessed April 14, 2021. https://lib.dr.iastate.edu/etd/10176.

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

MLA Handbook (7^th Edition):

Purevjav, Tsengeg. “Effects of functional oils and monensin on cattle finishing programs.” 2011. Web. 14 Apr 2021.

Vancouver:

Purevjav T. Effects of functional oils and monensin on cattle finishing programs. [Internet] [Thesis]. Iowa State University; 2011. [cited 2021 Apr 14]. Available from: https://lib.dr.iastate.edu/etd/10176.

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

Council of Science Editors:

Purevjav T. Effects of functional oils and monensin on cattle finishing programs. [Thesis]. Iowa State University; 2011. Available from: https://lib.dr.iastate.edu/etd/10176

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

University of Illinois – Urbana-Champaign

7. Retallick, Keela. Evaluation of feedlot feed efficiency relationships as well as genetic and phenotypic performance, carcass, and economic outcomes.

Degree: PhD, 0002, 2013, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/42433

► Several feed efficiency values have recently been proposed including: feed conversion ratio in terms of feed:gain (FCR), residual feed intake (RFI), and residual BW gain… (more)

▼ Several feed efficiency values have recently been proposed including: feed conversion ratio in terms of feed:gain (FCR), residual feed intake (RFI), and residual BW gain (RG), and residual intake and BW gain (RIG). These all have production efficiency potential since they include feed intake inputs and production outputs. The objective of this dissertation was to investigate: 1) heterosis effects on feed efficiency, 2) how measures of feed efficiency affect one another, 3) heritability estimates, 4) genetic and phenotypic relationships of performance, carcass, economic, and feed efficiency traits and 5) the relationship of economic factors and prediction of these factors utilizing performance, carcass, and feed efficiency characteristics. Steers were all early weaned (78 ± 24 d) and managed similarly prior to weaning and in the feedlot. Steers were all of known Simmental (SM), Angus (AN), and SM x AN genetics. Steers were pen-fed and individual DMIs were recorded using the GrowSafe® automated feeding system (GrowSafe® Systems Ltd., Airdrie, Alberta, Canada). Two experiments (1: n = 612) (2: n = 158) were conducted to analyze the effect of heterosis on subsequent steer progeny. Maternal heterosis was classified by dam breed into four categories: 1) 100% AN (AN), 2) 75% AN (75AN), 3) 50% AN (50AN), and 4) 75% or greater SM (SM). Results from experiment 1 showed that ADG was 0.08 kg higher (P < 0.05) for progeny of SM compared to AN dams. Dry matter intake and consequently RFI were improved (P < 0.05) for 75AN and 50AN compared to AN and SM dams. Residual BW gain was improved in (P < 0.05) progeny of SM dams when compared to AN dams. In conclusion, dams of varying AN breed composition produced offspring that performed differently with progeny from 75AN dams excelling in the feedlot. Next, Purebred AN and SM sires and dams were utilized. Progeny of SM dams had a more desirable RFI (P < 0.05). An improved HCW, backfat, LM area, and consequently yield grade was shown by progeny of SM dams (P < 0.05); however, marbling score was 80 units higher for progeny of AN dams (P < 0.05). The only sire by dam breed interaction was for marbling score (P = 0.05). Overall, maternal heterosis effects on performance, feed efficiency measures, and carcass traits of resulting progeny appear to be important. All feed efficiency traits investigated were favorably correlated both genetically and phenotypically to one another. Feed conversion ratio was genetically correlated to RG and RIG at -0.97 and -0.95, respectively. Feed conversion ratio is highly correlated with growth traits therefore an increase in weight led to a more desirable FCR. While a phenotypic increase wasn’t significant, a genetic increase in carcass value was associated with a more desirable FCR. A similar effect was shown when utilizing RG since it is very similar to FCR. While RFI does a good job at reducing intake, but it is genetically correlated to HCW at 0.34 having the genetic potential to also reduce weight. Residual intake and BW gain combined the advantageous… Advisors/Committee Members: Faulkner, Dan B. (advisor), Faulkner, Dan B. (Committee Chair), Shike, Daniel W. (committee member), Parrett, Douglas F. (committee member), Nkrumah, Donald (committee member), Rodriguez-Zas, Sandra L. (committee member).

Subjects/Keywords: Feedlot feed efficiency; genetic effect; phenotypic effect; performance; carcass; economics

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APA (6^th Edition):

Retallick, K. (2013). Evaluation of feedlot feed efficiency relationships as well as genetic and phenotypic performance, carcass, and economic outcomes. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/42433

Chicago Manual of Style (16^th Edition):

Retallick, Keela. “Evaluation of feedlot feed efficiency relationships as well as genetic and phenotypic performance, carcass, and economic outcomes.” 2013. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed April 14, 2021. http://hdl.handle.net/2142/42433.

MLA Handbook (7^th Edition):

Retallick, Keela. “Evaluation of feedlot feed efficiency relationships as well as genetic and phenotypic performance, carcass, and economic outcomes.” 2013. Web. 14 Apr 2021.

Vancouver:

Retallick K. Evaluation of feedlot feed efficiency relationships as well as genetic and phenotypic performance, carcass, and economic outcomes. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2013. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2142/42433.

Council of Science Editors:

Retallick K. Evaluation of feedlot feed efficiency relationships as well as genetic and phenotypic performance, carcass, and economic outcomes. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2013. Available from: http://hdl.handle.net/2142/42433

University of Pretoria

8. Haasbroek, Emile Francois. The effect of essential oils and calcified marine algae as natural alternatives to ionophore antibiotics on performance of feedlot cattle.

Degree: Animal and Wildlife Sciences, 2013, University of Pretoria

URL: http://hdl.handle.net/2263/40341

► viii SUMMARY The effect of essential oils and calcified marine algae as natural alternatives to ionophore antibiotics on performance of feedlot cattle by Emile Francois… (more)

▼ viii SUMMARY The effect of essential oils and calcified marine algae as natural alternatives to ionophore antibiotics on performance of feedlot cattle by Emile Francois Haasbroek Supervisor: Prof. L.J. Erasmus Department: Animal and Wildlife Sciences Faculty: Natural and Agricultural Sciences Degree: MSc (Agric) Animal Science: Animal Nutrition Ionophore antibiotic supplementation is standard practice in almost all feedlots in the USA, South Africa and many other countries due to its effectiveness to increase feed efficiency and modulate feed intake. Public concern over the emergence of antibiotic resistant bacteria and the consumers’ demand for safe, high quality nutritious food has stimulated the search for natural alternatives to ionophores in ruminant diets. The objectives of this study were: (i) to compare the effect of a specific blend of essential oils (XTract X60 – 7065 (XTract)) and a rumen buffer (Acid Buf) to monensin and its effects on the performance of feedlot cattle under both experimental and commercial conditions (ii) to determine the effect of these feed additives on the health status of feedlot cattle and (iii) to determine whether Acid Buf can replace monensin as feed additive in high energy feedlot diets based on hominy chop. For the experimental growth trial 180 Bonsmara type animals were blocked into two groups and then allocated to 6 pens with 10 animals each per treatment using a randomised complete block design. The basal diets (starter, intermediate finisher and final finisher) were the same for the Control XTract and Acid Buf; the only difference being the Control treatment was supplemented with monensin (21 – 33 mg /kg DM), the XTract treatment supplemented with XTract (1000 – 1200 mg /h /d) and the Acid Buf treatment supplemented with Acid Buf at 0,6% dietary DM. For the commercial trial, animals were blocked according to the same criteria but for each treatment there were 3 pens, standing 130 head of cattle per pen, therefore 390 animals per treatment. The experimental pen trial was designed for evaluation of growth and the commercial pen trial for evaluation of health status and growth under practical feedlot conditions. In the small pen trial there were no differences (P > 0.05) in DMI, FCR or ADG between treatments. In the commercial trial the XTract supplemented cattle had a higher EW (429.3 vs. 417.5 kg) and ADG (1.77 kg /d vs. 1.70 kg /d) (P < 0.05) compared to monensin supplemented cattle and the Acid Buf supplemented cattle tended (P > 0.10) towards a higher EW (425.3 vs. 417.5 kg) and ADG (1.74 vs. 1.70 kg /d) compared to monensin supplemented cattle. The feed conversion ratios were 5.67 and 5.26 for XTract and monensin supplemented cattle and did not differ (P = 0.26). The feed conversion ratios were 5.22 and 5.26 respectively for Acid Buf and monensin supplemented cattle and did not differ (P = 0.86). Treatments affected health parameters in the commercial pens with 78% healthy animals (not pulled) in the monensin supplemented animals compared to 82% for XTract… Advisors/Committee Members: Erasmus, L.J. (Lourens Jacobus) (advisor).

Subjects/Keywords: Calcified marine algae; Essential oils; Performance of feedlot cattle; UCTD

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APA (6^th Edition):

Haasbroek, E. F. (2013). The effect of essential oils and calcified marine algae as natural alternatives to ionophore antibiotics on performance of feedlot cattle. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/40341

Chicago Manual of Style (16^th Edition):

Haasbroek, Emile Francois. “The effect of essential oils and calcified marine algae as natural alternatives to ionophore antibiotics on performance of feedlot cattle.” 2013. Masters Thesis, University of Pretoria. Accessed April 14, 2021. http://hdl.handle.net/2263/40341.

MLA Handbook (7^th Edition):

Haasbroek, Emile Francois. “The effect of essential oils and calcified marine algae as natural alternatives to ionophore antibiotics on performance of feedlot cattle.” 2013. Web. 14 Apr 2021.

Vancouver:

Haasbroek EF. The effect of essential oils and calcified marine algae as natural alternatives to ionophore antibiotics on performance of feedlot cattle. [Internet] [Masters thesis]. University of Pretoria; 2013. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2263/40341.

Council of Science Editors:

Haasbroek EF. The effect of essential oils and calcified marine algae as natural alternatives to ionophore antibiotics on performance of feedlot cattle. [Masters Thesis]. University of Pretoria; 2013. Available from: http://hdl.handle.net/2263/40341

9. Cull, Charley Abraham. Epidemiology of Shiga toxin-producing Escherichia coli in commericial feedlot cattle.

Degree: PhD, Diagnostic Medicine/Pathobiology, 2016, Kansas State University

URL: http://hdl.handle.net/2097/32571

► Shiga toxin-producing Escherichia coli serogroups (O26, O45, O103, O111, O121, O145, and O157; STEC-7) are recognized as major food-borne pathogens with outbreaks, human infections, and… (more)

▼ Shiga toxin-producing Escherichia coli serogroups (O26, O45, O103, O111, O121, O145, and O157; STEC-7) are recognized as major food-borne pathogens with outbreaks, human infections, and occasional deaths associated with the consumption of contaminated foods. Cattle are recognized as the primary reservoir for STEC-7 and shed these bacteria in their feces, which are considered a principal source of contamination of cattle hides and carcasses at harvest. Pre-harvest interventions that effectively reduce fecal shedding of STEC-7 have the potential to reduce the public health concerns and economic impact of these bacteria and enhance food safety. In the research presented in this dissertation, distinct study designs were used to evaluate the impact of commercially available pre-harvest interventions and develop a better understanding of the epidemiology of STEC-7 in commercial feedlot cattle. A randomized pen-level trial indicated that a commercially available vaccine significantly reduced the fecal prevalence of STEC O157 and prevalence of high shedders compared to unvaccinated pens. However, there was no evidence of a direct-fed microbial (DFM) effect on either measure of STEC O157 shedding. In a continuum of the efficacy study, the performance and carcass characteristics associated with these pre-harvest interventions were quantified. Results indicated that feeding the DFM to cattle improved performance, whereas the vaccine negatively impacted performance during the intervention period, though most of these attributes were not reflected at the time the animals were harvested. Later, a cross-sectional observational study was used to determine the regional-, feedlot- and pen-level fecal prevalence of enterohemorrhagic Escherichia coli (EHEC), a subset of STEC, in commercial feedlot cattle. Results indicated that EHEC serogroup O157 was detected more frequently than non-O157 serogroups of EHEC; however, all feedlots had at least one sample positive for both O157 and non-O157 EHEC. Further, risk factors associated with non-O157 serogroups of EHEC were identified; further evaluation of these factors as potential control points may enable the ability to positively impact public health concerns and food safety by reducing the pathogen load prior to harvest. Overall, the research described in this dissertation provides an assessment of pre-harvest interventions and multi-level prevalence estimates of STEC-7 in commercial feedlot operations. Advisors/Committee Members: David G. Renter.

Subjects/Keywords: Cattle; E. coli; Feedlot; Performance; STEC; Food safety

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APA (6^th Edition):

Cull, C. A. (2016). Epidemiology of Shiga toxin-producing Escherichia coli in commericial feedlot cattle. (Doctoral Dissertation). Kansas State University. Retrieved from http://hdl.handle.net/2097/32571

Chicago Manual of Style (16^th Edition):

Cull, Charley Abraham. “Epidemiology of Shiga toxin-producing Escherichia coli in commericial feedlot cattle.” 2016. Doctoral Dissertation, Kansas State University. Accessed April 14, 2021. http://hdl.handle.net/2097/32571.

MLA Handbook (7^th Edition):

Cull, Charley Abraham. “Epidemiology of Shiga toxin-producing Escherichia coli in commericial feedlot cattle.” 2016. Web. 14 Apr 2021.

Vancouver:

Cull CA. Epidemiology of Shiga toxin-producing Escherichia coli in commericial feedlot cattle. [Internet] [Doctoral dissertation]. Kansas State University; 2016. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2097/32571.

Council of Science Editors:

Cull CA. Epidemiology of Shiga toxin-producing Escherichia coli in commericial feedlot cattle. [Doctoral Dissertation]. Kansas State University; 2016. Available from: http://hdl.handle.net/2097/32571

Utah State University

10. Gardner, Jose. Effects of Gestational Dietary Intake on Calf Growth and Early Feedlot Performance of Offspring.

Degree: MS, Nutrition, Dietetics, and Food Sciences, 2017, Utah State University

URL: https://digitalcommons.usu.edu/etd/5395

► Fetal programming is a relatively new and quickly growing field of research in the livestock industry. The concept of fetal programming is simply defined… (more)

Subjects/Keywords: Fetal programming; feedlot performance; maternal nutrition; beef cattle; Food Science; Nutrition

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APA (6^th Edition):

Gardner, J. (2017). Effects of Gestational Dietary Intake on Calf Growth and Early Feedlot Performance of Offspring. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/5395

Chicago Manual of Style (16^th Edition):

Gardner, Jose. “Effects of Gestational Dietary Intake on Calf Growth and Early Feedlot Performance of Offspring.” 2017. Masters Thesis, Utah State University. Accessed April 14, 2021. https://digitalcommons.usu.edu/etd/5395.

MLA Handbook (7^th Edition):

Gardner, Jose. “Effects of Gestational Dietary Intake on Calf Growth and Early Feedlot Performance of Offspring.” 2017. Web. 14 Apr 2021.

Vancouver:

Gardner J. Effects of Gestational Dietary Intake on Calf Growth and Early Feedlot Performance of Offspring. [Internet] [Masters thesis]. Utah State University; 2017. [cited 2021 Apr 14]. Available from: https://digitalcommons.usu.edu/etd/5395.

Council of Science Editors:

Gardner J. Effects of Gestational Dietary Intake on Calf Growth and Early Feedlot Performance of Offspring. [Masters Thesis]. Utah State University; 2017. Available from: https://digitalcommons.usu.edu/etd/5395

11. ANA LÚCIA TEODORO. DESEMPENHO, COMPORTAMENTO INGESTIVO E DIGESTIBILIDADE EM NOVILHAS DA RAÇA PANTANEIRA, SOB DIETAS COM DIFERENTES NÍVEIS PROTÉICOS.

Degree: 2011, UNIVERSIDADE FEDERAL DA GRANDE DOURADOS

URL: http://www.ufgd.edu.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=269

► Objetivou-se com este experimento avaliar o desempenho, o comportamento ingestivo e fisiológico, a digestibilidade aparente e os parâmetros sanguíneos e urinários de novilhas da raça… (more)

▼ Objetivou-se com este experimento avaliar o desempenho, o comportamento ingestivo e fisiológico, a digestibilidade aparente e os parâmetros sanguíneos e urinários de novilhas da raça Pantaneira, alimentadas com dietas contendo diferentes níveis de proteína bruta (PB). Assim, acompanhou-se o crescimento de 15 animais, com peso vivo médio inicial de 146 kg, mantidos em regime de confinamento e alimentados com feno e ração concentrada. A idade média das novilhas era de 18 meses e, após 30 dias de adaptação, avaliou-se o desempenho durante 3 períodos de 28 dias, totalizando 114 dias experimentais. Os animais foram pesados e divididos em quatro lotes com pesos semelhantes, num delineamento inteiramente casualizado, sendo cada novilha representante de uma unidade experimental. Em seguida os animais foram alocados nos tratamentos com diferentes níveis de proteína 11, 13, 15 e 17% de PB. Todas as dietas eram iso-energéticas com 62% de Nutrientes Digestíveis Totais (NDT) e fornecidas duas vezes ao dia a vontade, sendo compostas por feno de Capim Massai (Panicum maximum cv. Massai) misturado com Estilosantes (Stylosanthes guyanensis cv. Campo Grande) e ração concentrada, numa proporção na matéria seca de 60:40, respectivamente. Assim, os diferentes teores protéicos das dietas foram ajustados na formulação da ração concentrada. Determinou-se o desempenho das novilhas através do consumo de matéria seca (MS), expresso em kg/dia, em percentagem do peso vivo e em função do peso metabólico, dos consumos de proteína bruta (PB), de fibra em detergente neutro (FDN), fibra em detergente ácido (FDA), do ganho de peso médio diário, da conversão alimentar e dos ganhos em altura de cernelha e de garupa. Para isso, tanto os alimentos oferecidos como as sobras, foram coletados diariamente, pesados e amostrados, sendo as amostras congeladas por 28 dias, formando uma amostra composta do período por animal. Posteriormente, foram realizadas análises bromatológicas das amostras compostas de cada período por animal. A pesagem das novilhas foi realizada em intervalos de 28 dias, estabelecendo-se um jejum de sólidos de 12 horas. Nesse momento também foram tomadas as medidas das alturas de cernelha e de garupa. As observações de comportamento ingestivo e fisiológico foram feitas em três baterias de 48 horas cada. A verificação dos níveis de nitrogênio no plasma, excreção de nitrogênio urinário e a influência do nível de proteína sobre a digestibilidade aparente das dietas foram avaliadas durante os 84 dias. Nesse caso, foram diariamente coletadas e congeladas amostras dos alimentos oferecidos e das sobras de cada novilha, já a realização das coletas de fezes, retal e de urina, na forma spot e a coleta de sangue, na veia jugular foram realizadas no final de cada periodo de 28 dias. A produção fecal foi estimada utilizando-se a fibra em detergente neutro indigerível (FDNi) como indicador interno. Os dados foram interpretados por meio de análise de variância, Teste de Tukey e estudos de Regressão. Os ganhos de peso médios diários foram 0,580; 0,610;… Advisors/Committee Members: Marcus Vinicius Morais de Oliveira, Fernando Miranda de Vargas Junior.

Subjects/Keywords: confinamento; gado pantaneiro; performance; ruminantes; Tucura; ZOOTECNIA; acting; cattle wetland; feedlot; ruminants; Tucura

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APA (6^th Edition):

TEODORO, A. L. (2011). DESEMPENHO, COMPORTAMENTO INGESTIVO E DIGESTIBILIDADE EM NOVILHAS DA RAÇA PANTANEIRA, SOB DIETAS COM DIFERENTES NÍVEIS PROTÉICOS. (Thesis). UNIVERSIDADE FEDERAL DA GRANDE DOURADOS. Retrieved from http://www.ufgd.edu.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=269

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):

TEODORO, ANA LÚCIA. “DESEMPENHO, COMPORTAMENTO INGESTIVO E DIGESTIBILIDADE EM NOVILHAS DA RAÇA PANTANEIRA, SOB DIETAS COM DIFERENTES NÍVEIS PROTÉICOS.” 2011. Thesis, UNIVERSIDADE FEDERAL DA GRANDE DOURADOS. Accessed April 14, 2021. http://www.ufgd.edu.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=269.

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

MLA Handbook (7^th Edition):

TEODORO, ANA LÚCIA. “DESEMPENHO, COMPORTAMENTO INGESTIVO E DIGESTIBILIDADE EM NOVILHAS DA RAÇA PANTANEIRA, SOB DIETAS COM DIFERENTES NÍVEIS PROTÉICOS.” 2011. Web. 14 Apr 2021.

Vancouver:

TEODORO AL. DESEMPENHO, COMPORTAMENTO INGESTIVO E DIGESTIBILIDADE EM NOVILHAS DA RAÇA PANTANEIRA, SOB DIETAS COM DIFERENTES NÍVEIS PROTÉICOS. [Internet] [Thesis]. UNIVERSIDADE FEDERAL DA GRANDE DOURADOS; 2011. [cited 2021 Apr 14]. Available from: http://www.ufgd.edu.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=269.

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

Council of Science Editors:

TEODORO AL. DESEMPENHO, COMPORTAMENTO INGESTIVO E DIGESTIBILIDADE EM NOVILHAS DA RAÇA PANTANEIRA, SOB DIETAS COM DIFERENTES NÍVEIS PROTÉICOS. [Thesis]. UNIVERSIDADE FEDERAL DA GRANDE DOURADOS; 2011. Available from: http://www.ufgd.edu.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=269

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

12. Miranda, Lucas Domingos Ferreira. Fornecimento estratégico de leveduras vivas e monensina sódica no desempenho e saúde ruminal em bovinos Nelore terminados em confinamento.

Degree: 2017, Universidade Estadual Paulista (UNESP)

URL: http://hdl.handle.net/11449/152260

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Objetivou-se com esse trabalho avaliar o efeito de leveduras vivas e monensina sódica, em associação ou não, no desempenho produtivo, características de carcaça, perfil sanguíneo, comportamento ingestivo, seletividade da partícula e saúde ruminal em bovinos Nelore terminados em confinamento. Foram utilizados 77 animais machos não castrados, com peso vivo médio inicial de 353,23 ± 34,89 kg e provenientes de recria em sistema de pastejo contínuo. O delineamento experimental foi em blocos casualizados em arranjo fatorial 2x2, sendo os fatores a inclusão de monensina ou leveduras vivas, e todos os tratamentos receberam a mesma dieta diferenciando apenas na inclusão dos aditivos. Cada tratamento foi composto por 6 baias (3 a 4 animais/baia), sendo estas consideradas as unidades experimentais para este estudo. O período experimental foi de 90 dias com adaptação em step up, aumentando o nível de concentrado da dieta de 67 até 87% na dieta de terminação. Os resultados foram avaliados por meio do procedimento MIXED do SAS, sendo considerado significativo P<0,05. Houve efeito significativo na ingestão de massa seca para os animais do tratamento monensina (P<0,01), assim como na conversão e eficiência alimentar (P=0,03 e P=0,02, respectivamente) quando comparados aos tratamentos sem monensina. A levedura por sua vez não proporcionou diferença nos parâmetros de desempenho produtivo e não houve interação entre os aditivos. Os animais que receberam monensina apresentaram menor flutuação de consumo (P<0,01) e maior energia líquida de ganho (P<0,01). O perfil sanguíneo dos animais tratados com monensina diferiu significativamente dos tratamentos sem monensina nos parâmetros pressão de O2 (P=0,01), total de CO2 (P=0,03) e bicarbonato (P=0,04), enquanto a levedura proporcionou menor lactato sanguíneo (P<0,01). Não houve interação entre aditivos ou entre aditivos e fases, no entanto houve diferença significativa entre as fases de adaptação e terminação para praticamente todos os parâmetros avaliados (P<0,01), exceto para pH, pressão de O2 e saturação de O2. Houve interação entre monensina e fase no comportamento ingestivo, para os parâmetros tempo de alimentação e tempo de ócio. Houve interação entre fornecimento de leveduras e fase nos parâmetros de…

Advisors/Committee Members: Universidade Estadual Paulista (UNESP), Arrigoni, Mario de Beni [UNESP].

Subjects/Keywords: aditivos; bovinos confinados; epitélio ruminal; desempenho; additive; feedlot cattle; performance; ruminal epithellium

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APA (6^th Edition):

Miranda, L. D. F. (2017). Fornecimento estratégico de leveduras vivas e monensina sódica no desempenho e saúde ruminal em bovinos Nelore terminados em confinamento. (Masters Thesis). Universidade Estadual Paulista (UNESP). Retrieved from http://hdl.handle.net/11449/152260

Chicago Manual of Style (16^th Edition):

Miranda, Lucas Domingos Ferreira. “Fornecimento estratégico de leveduras vivas e monensina sódica no desempenho e saúde ruminal em bovinos Nelore terminados em confinamento.” 2017. Masters Thesis, Universidade Estadual Paulista (UNESP). Accessed April 14, 2021. http://hdl.handle.net/11449/152260.

MLA Handbook (7^th Edition):

Miranda, Lucas Domingos Ferreira. “Fornecimento estratégico de leveduras vivas e monensina sódica no desempenho e saúde ruminal em bovinos Nelore terminados em confinamento.” 2017. Web. 14 Apr 2021.

Vancouver:

Miranda LDF. Fornecimento estratégico de leveduras vivas e monensina sódica no desempenho e saúde ruminal em bovinos Nelore terminados em confinamento. [Internet] [Masters thesis]. Universidade Estadual Paulista (UNESP); 2017. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/11449/152260.

Council of Science Editors:

Miranda LDF. Fornecimento estratégico de leveduras vivas e monensina sódica no desempenho e saúde ruminal em bovinos Nelore terminados em confinamento. [Masters Thesis]. Universidade Estadual Paulista (UNESP); 2017. Available from: http://hdl.handle.net/11449/152260

13. Melo, Verônica Freitas de Paula [UNESP]. Silagens de milho consorciado com forrageira tropical e leguminosa em dietas para terminação de cordeiros.

Degree: 2016, Universidade Estadual Paulista (UNESP)

URL: http://hdl.handle.net/11449/134251

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A produção de volumosos para a alimentação animal através do sistema de integração lavoura-pecuária é uma alternativa para a recuperação de pastagens degradadas e para a produção de volumosos conservados de alta qualidade. Neste sistema, o consorcio de gramíneas com leguminosas pode ser uma estratégia para a produção de silagem, pois a fixação biológica de nitrogênio incrementa os teores e a disponibilidade desse nutriente no solo, consequentemente, melhorando o valor nutricional da silagem. Pesquisas em busca de alternativas para volumosos de melhor qualidade são fundamentais para a eficiência dos sistemas de produção de cordeiros, principalmente para o confinamento, pois a alimentação representa o maior custo neste sistema. O presente trabalho teve o objetivo de avaliar o efeito de volumosos, provindo de um sistema de integração lavoura-pecuária, sobre o desempenho, digestibilidade, produção de metano e dióxido de carbono entérico, comportamento ingestivo e a análise de custos da terminação de cordeiros ½ Dorper e ½ Santa Inês em confinamento, com dietas contendo concentrado e diferentes silagens (silagem de milho exclusivo, silagem de milho + Urochloa brizantha cv. Marandu e silagem de milho + Urochloa brizantha cv. Marandu + guandu-anão). O ganho médio diário (kg/dia), assim como o período em que os cordeiros permaneceram confinados, não foi influenciado pelas diferentes dietas. A utilização da silagem proveniente do consórcio do milho, Marandu e guandu-anão na dieta de cordeiros, proporcionou aumento no consumo de matéria seca (kg/dia) e acresceram os tempos dispendidos para ruminação, mastigação e distribuição da fibra fisicamente efetiva. As dietas mostraram rentabilidade favorável na terminação de cordeiros em confinamento; entretanto, o maior retorno econômico foi obtido com o sistema em que os animais foram alimentados com silagem de milho exclusivo. A dieta contendo silagem de milho em consórcio com Marandu e guandu-anão proporcionou aumento do consumo de proteína bruta (kg/dia) quando comparada a silagem de milho (0,273 e 0,238, respectivamente). O potencial de produção de gases de efeito estufa, foi inferior para as dietas contendo as silagens de milho em consórcio, principalmente no consórcio de milho com Marandu e guandu-anão, que reduziu a emissão de metano e dióxido de carbono em 37,86 e 28,05%, respectivamente. A utilização de animais capazes de apresentar melhores ganhos diários…

Advisors/Committee Members: Universidade Estadual Paulista (UNESP), Pinheiro, Rafael Silvio Bonilha [UNESP].

Subjects/Keywords: Confinamento; Cordeiro; Desempenho animal; Guandu-anão; Metano; Animal performance; Feedlot; Lambs; Methane; Pigeon pea

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APA (6^th Edition):

Melo, V. F. d. P. [. (2016). Silagens de milho consorciado com forrageira tropical e leguminosa em dietas para terminação de cordeiros. (Masters Thesis). Universidade Estadual Paulista (UNESP). Retrieved from http://hdl.handle.net/11449/134251

Chicago Manual of Style (16^th Edition):

Melo, Verônica Freitas de Paula [UNESP]. “Silagens de milho consorciado com forrageira tropical e leguminosa em dietas para terminação de cordeiros.” 2016. Masters Thesis, Universidade Estadual Paulista (UNESP). Accessed April 14, 2021. http://hdl.handle.net/11449/134251.

MLA Handbook (7^th Edition):

Melo, Verônica Freitas de Paula [UNESP]. “Silagens de milho consorciado com forrageira tropical e leguminosa em dietas para terminação de cordeiros.” 2016. Web. 14 Apr 2021.

Vancouver:

Melo VFdP[. Silagens de milho consorciado com forrageira tropical e leguminosa em dietas para terminação de cordeiros. [Internet] [Masters thesis]. Universidade Estadual Paulista (UNESP); 2016. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/11449/134251.

Council of Science Editors:

Melo VFdP[. Silagens de milho consorciado com forrageira tropical e leguminosa em dietas para terminação de cordeiros. [Masters Thesis]. Universidade Estadual Paulista (UNESP); 2016. Available from: http://hdl.handle.net/11449/134251

14. Franke, Jake. Quality Assessment of Feeder Cattle and Processes Based on Available Background Information.

Degree: PhD, Animal Science, 2013, Texas A&M University

URL: http://hdl.handle.net/1969.1/149271

► The 2011 National Feeder Cattle Audit evaluated 42,704 cattle in 260 lots from 12 Texas and five Nebraska feedyards to determine BQA adherence, the effects… (more)

▼ The 2011 National Feeder Cattle Audit evaluated 42,704 cattle in 260 lots from 12 Texas and five Nebraska feedyards to determine BQA adherence, the effects prior management and transportation practices had on feedyard performance and health, and established industry benchmark data so that future advancements and improvements in beef quality related areas can be monitored. This study suggested most feedyard managers and some cow-calf producers and stocker operators have implemented Beef Quality Assurance plans into their respective operations. Survey data documents that the many stakeholders in the beef cattle industry have followed BQA guidelines in an effort to improve the quality and safety of beef being produced. The lots of cattle traveled an average distance of 468 miles from their origin to the feedyard and spent an average of 185.7 days on feed. The majority of the lots were from a single-source origin. Of the cattle where feedlot performance data was available, they gained an average of 3.2 lb/day and converted at 6.2:1. Across all lots, the average animal cost per day was 3.30. Cattle in the feedyard appeared healthy with a 1.7% average death loss and 19.6% average morbidity rate. Processing costs averaged 14.47 per animal, and medicine costs were 5.22 per animal in the lot. The majority of lots had lot tags present in their ear (98.8%), were branded with at least one hide brand (64.3%) and were polled (79.8%). The cattle had primarily a solid hide color (70.7%) and were black (49.6%). Lots appeared uniform with 82.9% being termed slightly to extremely uniform and only 17.1% of the evaluated lots being assessed as slightly to extremely variable. Cattle that traveled further distances to the feedyard had higher processing costs, but in turn did not have differences in medicine costs through the finishing period. It appears the industry will need more communication across the different segments to ensure a sustainable future. Continuing to track cattle origin and what management practices have been done will be important so that cattle can be received with the appropriate processing protocol. Across-segment collaboration and communication provides economic opportunities for beef cattle producers. Advisors/Committee Members: Savell, Jeffrey W (advisor), Herring, Andy D (advisor), Rayfield, John (committee member), Hale, Daniel S (committee member).

Subjects/Keywords: Beef Quality Assurance; U.S. Feedlot Cattle; Feedlot Performance; Background Information

…impact health, feedlot performance and carcass quality and composition. The factors in live… …costs, but also 4 feedlot performance and carcass characteristics. Healthy cattle had a 0.5… …Fulton et al. (2002) studied the effect of BRD treatment on feedlot performance and… …diagnosis and treatment for BRD on feedlot performance and carcass measurements. They reported… …regard to health and feedlot performance/profitability. Often, the most efficient areas to…

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APA (6^th Edition):

Franke, J. (2013). Quality Assessment of Feeder Cattle and Processes Based on Available Background Information. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/149271

Chicago Manual of Style (16^th Edition):

Franke, Jake. “Quality Assessment of Feeder Cattle and Processes Based on Available Background Information.” 2013. Doctoral Dissertation, Texas A&M University. Accessed April 14, 2021. http://hdl.handle.net/1969.1/149271.

MLA Handbook (7^th Edition):

Franke, Jake. “Quality Assessment of Feeder Cattle and Processes Based on Available Background Information.” 2013. Web. 14 Apr 2021.

Vancouver:

Franke J. Quality Assessment of Feeder Cattle and Processes Based on Available Background Information. [Internet] [Doctoral dissertation]. Texas A&M University; 2013. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/1969.1/149271.

Council of Science Editors:

Franke J. Quality Assessment of Feeder Cattle and Processes Based on Available Background Information. [Doctoral Dissertation]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/149271

15. Lippolis, Katy. Effects of two-stage weaning with nose flaps applied to calves on cow performance, calf performance, carcass quality, calf humoral immune response, and fertility.

Degree: MS(M.S.), Animal Sciences, 2015, Colorado State University

URL: http://hdl.handle.net/10217/167204

To view the abstract, please see the full text of the document. Advisors/Committee Members: Ahola, Jason (advisor), Engle, Terry (committee member), Callan, Rob (committee member), Swyers, Kelcey (committee member).

Subjects/Keywords: feedlot performance; nose flaps; beef calves; weaning; immune response

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APA (6^th Edition):

Lippolis, K. (2015). Effects of two-stage weaning with nose flaps applied to calves on cow performance, calf performance, carcass quality, calf humoral immune response, and fertility. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/167204

Chicago Manual of Style (16^th Edition):

Lippolis, Katy. “Effects of two-stage weaning with nose flaps applied to calves on cow performance, calf performance, carcass quality, calf humoral immune response, and fertility.” 2015. Masters Thesis, Colorado State University. Accessed April 14, 2021. http://hdl.handle.net/10217/167204.

MLA Handbook (7^th Edition):

Lippolis, Katy. “Effects of two-stage weaning with nose flaps applied to calves on cow performance, calf performance, carcass quality, calf humoral immune response, and fertility.” 2015. Web. 14 Apr 2021.

Vancouver:

Lippolis K. Effects of two-stage weaning with nose flaps applied to calves on cow performance, calf performance, carcass quality, calf humoral immune response, and fertility. [Internet] [Masters thesis]. Colorado State University; 2015. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10217/167204.

Council of Science Editors:

Lippolis K. Effects of two-stage weaning with nose flaps applied to calves on cow performance, calf performance, carcass quality, calf humoral immune response, and fertility. [Masters Thesis]. Colorado State University; 2015. Available from: http://hdl.handle.net/10217/167204

Stellenbosch University

16. Du Toit, Raoul. The influence of R-Salbutamol on feedlot performance, carcass characteristics and meat quality in Dorper ram, wether and ewe lambs.

Degree: MScAgric, Animal Sciences, 2017, Stellenbosch University

URL: http://hdl.handle.net/10019.1/100982

►

ENGLISH ABSTRACT: A study on the effects of different R-salbutamol inclusion levels in a commercial finishing diet, on feedlot performance of three Dorper lamb sexes… (more)

Subjects/Keywords: Influence of R-Salbutamol on feedlot performance; Dorper sheep – Meat quality; Dorper sheep – Carcass characteristics; Dorper sheep – Nutrition; UCTD

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APA (6^th Edition):

Du Toit, R. (2017). The influence of R-Salbutamol on feedlot performance, carcass characteristics and meat quality in Dorper ram, wether and ewe lambs. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/100982

Chicago Manual of Style (16^th Edition):

Du Toit, Raoul. “The influence of R-Salbutamol on feedlot performance, carcass characteristics and meat quality in Dorper ram, wether and ewe lambs.” 2017. Masters Thesis, Stellenbosch University. Accessed April 14, 2021. http://hdl.handle.net/10019.1/100982.

MLA Handbook (7^th Edition):

Du Toit, Raoul. “The influence of R-Salbutamol on feedlot performance, carcass characteristics and meat quality in Dorper ram, wether and ewe lambs.” 2017. Web. 14 Apr 2021.

Vancouver:

Du Toit R. The influence of R-Salbutamol on feedlot performance, carcass characteristics and meat quality in Dorper ram, wether and ewe lambs. [Internet] [Masters thesis]. Stellenbosch University; 2017. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10019.1/100982.

Council of Science Editors:

Du Toit R. The influence of R-Salbutamol on feedlot performance, carcass characteristics and meat quality in Dorper ram, wether and ewe lambs. [Masters Thesis]. Stellenbosch University; 2017. Available from: http://hdl.handle.net/10019.1/100982

University of Saskatchewan

17. 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 (6^th 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 (16^th Edition):

Leao Guidotti, Elisabeth 1982-. “ESTABLISHMENT OF CARINATA MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE.” 2018. Thesis, University of Saskatchewan. Accessed April 14, 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 (7^th Edition):

Leao Guidotti, Elisabeth 1982-. “ESTABLISHMENT OF CARINATA MEAL AS A PROTEIN SUPPLEMENT FOR BEEF CATTLE.” 2018. Web. 14 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 14]. 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

18. Puthenpurayil Sasidharannair, Jayakrishnannair 1979-. Nutritional evaluation of forage barley varieties for silage.

Degree: 2017, University of Saskatchewan

URL: http://hdl.handle.net/10388/8183

► A lack of information about nutritional and digestibility characteristics of common barley varieties grown for silage in western Canada has resulted in producers selecting varieties… (more)

▼ A lack of information about nutritional and digestibility characteristics of common barley varieties grown for silage in western Canada has resulted in producers selecting varieties more on yield and other agronomic characteristics as opposed to nutritional value. The overall objective of this research was to evaluate nutritional and 30-h NDF digestibility (NDFD30h) characteristics of common Canadian barley varieties, changes in NDFD30h characteristics of these varieties with advancing maturity and the effect of feeding these varieties on the performance of feedlot steers. A nutritional evaluation of commercial barley silage samples harvested at mid-dough stage indicated that CDC Cowboy had a greater (P < 0.01) NDFD30h relative to Legacy and Xena with CDC Copeland, Falcon and AC Metcalfe intermediate. However, in a subsequent trial, growing CDC Cowboy, CDC Copeland and Xena (high, intermediate and low NDFD30h respectively) and harvesting on the same day across varieties did not (P > 0.05) result in variability in NDFD30h. A feedlot and metabolism trial utilizing the 3 barley varieties at 2 (HIGH and LOW) levels of inclusion indicated that backgrounding steers fed CDC Cowboy and HIGH silage diets had lower (P < 0.01) DMI, ADG and end of backgrounding BW while steers fed HIGH silage finishing diets had compensatory gain relative to those fed LOW silage diets. Ruminal fermentation and total tract digestibility characteristics of heifers fed backgrounding and finishing diets were similar (P > 0.05) across treatments. When CDC Cowboy, CDC Copeland and Xena were seeded, treated and harvested from replicated plots at four stages of maturity (milk, early-, mid- and hard-dough) over 2 crop years, there was a variety × maturity interaction with CDC Cowboy having greater (P < 0.01) NDFD30h at early-dough than Xena and greater (P < 0.01) NDFD30h at hard-dough than CDC Copeland. As such, there is potential for producers to select barley varieties with enhanced nutritional and agronomic characteristics. Harvesting CDC cowboy at early-dough for silage for dairy and CDC Cowboy and Xena at hard-dough for swath grazing would likely improve the nutritive value of forage and could lead to specific maturity targets for different farm operations (beef vs. dairy). Advisors/Committee Members: Christensen, David, Yu, Peiqiang, Beattie, Aaron D, McAllister, Tim A.

Subjects/Keywords: Barley silage; maturity; NDFD30h; feedlot; performance

…western Canada on the growth performance of feedlot steers has not been evaluated. Barley… …Vary in NDF Digestibility on Performance and Carcass Characteristics of Growing and Finishing… …79 4.4.2 Animal Performance… …digestibility on ruminal fermentation and nutrient digestibility of feedlot heifers fed backgrounding… …65 Table 4. 1. Chemical composition of barley silage varieties used for the feedlot trial…

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APA (6^th Edition):

Puthenpurayil Sasidharannair, J. 1. (2017). Nutritional evaluation of forage barley varieties for silage. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/8183

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):

Puthenpurayil Sasidharannair, Jayakrishnannair 1979-. “Nutritional evaluation of forage barley varieties for silage.” 2017. Thesis, University of Saskatchewan. Accessed April 14, 2021. http://hdl.handle.net/10388/8183.

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

MLA Handbook (7^th Edition):

Puthenpurayil Sasidharannair, Jayakrishnannair 1979-. “Nutritional evaluation of forage barley varieties for silage.” 2017. Web. 14 Apr 2021.

Vancouver:

Puthenpurayil Sasidharannair J1. Nutritional evaluation of forage barley varieties for silage. [Internet] [Thesis]. University of Saskatchewan; 2017. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10388/8183.

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

Council of Science Editors:

Puthenpurayil Sasidharannair J1. Nutritional evaluation of forage barley varieties for silage. [Thesis]. University of Saskatchewan; 2017. Available from: http://hdl.handle.net/10388/8183

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

Colorado State University

19. Schutz, Jennifer Sue. Management strategies to improve beef feedlot performance and assessment of nutrient composition of beef retail cuts.

Degree: PhD, Animal Sciences, 2011, Colorado State University

URL: http://hdl.handle.net/10217/49861

To view the abstract, please see the full text of the document. Advisors/Committee Members: Engle, Terry (advisor), Belk, Keith (committee member), Archibeque, Shawn (committee member), Van Campen, Hana (committee member).

Subjects/Keywords: beef; feedlot management; nutritive value; performance; purge; retail cut

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APA (6^th Edition):

Schutz, J. S. (2011). Management strategies to improve beef feedlot performance and assessment of nutrient composition of beef retail cuts. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/49861

Chicago Manual of Style (16^th Edition):

Schutz, Jennifer Sue. “Management strategies to improve beef feedlot performance and assessment of nutrient composition of beef retail cuts.” 2011. Doctoral Dissertation, Colorado State University. Accessed April 14, 2021. http://hdl.handle.net/10217/49861.

MLA Handbook (7^th Edition):

Schutz, Jennifer Sue. “Management strategies to improve beef feedlot performance and assessment of nutrient composition of beef retail cuts.” 2011. Web. 14 Apr 2021.

Vancouver:

Schutz JS. Management strategies to improve beef feedlot performance and assessment of nutrient composition of beef retail cuts. [Internet] [Doctoral dissertation]. Colorado State University; 2011. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10217/49861.

Council of Science Editors:

Schutz JS. Management strategies to improve beef feedlot performance and assessment of nutrient composition of beef retail cuts. [Doctoral Dissertation]. Colorado State University; 2011. Available from: http://hdl.handle.net/10217/49861

20. Brandenberger, Tracy L. The performance of market advisory services in feedlot margins over 1995-2004.

Degree: MS, 0176, 2011, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/18381

► The purpose of this thesis is to evaluate the pricing performance of market advisory services’ live cattle hedging recommendations over 1995-2004. Also, feeder cattle, corn,… (more)

▼ The purpose of this thesis is to evaluate the pricing performance of market advisory services’ live cattle hedging recommendations over 1995-2004. Also, feeder cattle, corn, and soybean meal recommendations were evaluated as input hedges and combined with the live cattle marketing recommendations to approximate the margin that a typical feedlot would face from the third quarter of 1999 through 2004. Other marketing assumptions were also applied to approximate a real world feedlot in Western Kansas. Several key assumptions are i) the feedlot markets on average 1 ctw of live cattle per quarter, inputs are purchased at rates that will yield on average 1 ctw of live cattle per quarter, or 4 ctw total per year, ii) the marketing widow for live cattle marketings begins six months prior to the start of the marketing quarter, making the total marketing window nine months long, iii) brokerage costs are subtracted from futures and options markets gains or losses and iv) the purchases of inputs, live cattle marketed per quarter and benchmarks are weighted by quarter to reflect the cyclical nature of live cattle marketing. The net price an advisory service receives for a given quarter is compared to a market benchmark to evaluate the performance of the service. The market benchmarks used in this study are weighted average cash prices per quarter for each of the hedged items. Each market benchmark is calculated to assume the same assumptions and cash marketing schedule applied to each advisory service’s track record. Four performance measures are used to evaluate the pricing performance of the advisory services over 1995-2004 for live cattle and 1999 Q3-2004 for margin recommendations. Results show that advisory services as a group do not outperform the benchmark in either live cattle or margin recommendations. Also, no advisory services produced prices that were statistically iii different from the benchmark when averaged over all quarters. When risk was taken into account, advisory services again did not outperform the benchmark as a group; however, two advisory services yielded pricing performance superior to the benchmarks in live cattle and one in margin hedging. Overall, the results show that advisory services do not appear to “beat the market.” While there were few services that produced results superior to the benchmark, the services as a group did not provide feedlots the opportunity to improve their margin levels relative to the market and a strategy of marketing a portion of your live cattle per month and achieving the market benchmark was the most profitable strategy. Advisors/Committee Members: Irwin, Scott H. (advisor).

Subjects/Keywords: Feedlot Margin; Market Advisory Service; Performance Evaluation

…model to evaluate the performance of various feedlot marketing strategies which included both… …performance of various feedlot marketing strategies. A feedlot model was developed to analyze… …Performance Results for Individual Market Advisory Programs versus the Cash Market Benchmark Price… …Program Performance by Rank Between Adjacent Pairs of Marketing Quarters, Live Cattle 1995… …2004 ........117 ix Table 30. Rank of Performance Among Market Advisory Services by…

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APA (6^th Edition):

Brandenberger, T. L. (2011). The performance of market advisory services in feedlot margins over 1995-2004. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/18381

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):

Brandenberger, Tracy L. “The performance of market advisory services in feedlot margins over 1995-2004.” 2011. Thesis, University of Illinois – Urbana-Champaign. Accessed April 14, 2021. http://hdl.handle.net/2142/18381.

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

MLA Handbook (7^th Edition):

Brandenberger, Tracy L. “The performance of market advisory services in feedlot margins over 1995-2004.” 2011. Web. 14 Apr 2021.

Vancouver:

Brandenberger TL. The performance of market advisory services in feedlot margins over 1995-2004. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2011. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2142/18381.

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

Council of Science Editors:

Brandenberger TL. The performance of market advisory services in feedlot margins over 1995-2004. [Thesis]. University of Illinois – Urbana-Champaign; 2011. Available from: http://hdl.handle.net/2142/18381

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

University of Arizona

21. Garcia, Samuel Ruben. Comparison of Feedlot Performance, Carcass Merit and Chemical Composition of Crossbred Cattle .

Degree: 2013, University of Arizona

URL: http://hdl.handle.net/10150/301690

► Feedlot performance, carcass merit and chemical composition were compared using Waguli , Brangus, Hereford x Tuli and Wagyu x Crossbred Gene Combination (CGC) breeds. Steers… (more)

▼ Feedlot performance, carcass merit and chemical composition were compared using Waguli , Brangus, Hereford x Tuli and Wagyu x Crossbred Gene Combination (CGC) breeds. Steers were penned in the following manner: 6 Waguli steers, 6 Hereford x Tuli, 6 Wagyu x CGC and 8 Brangus. There was a significant difference (P<0.05) between Brangus and Waguli for ADGs. F:G was lower (P<0.05) for Hereford x Tuli compared to the other crossbreeds. A heavier final weight was observed (P<0.05) for the Wagyu x CGC than all other crossbreds. There was a significant difference (P<0.05) for REA between Wagyu x CGC and Hereford x Tuli and Waguli. Wagyu x CGC had higher shear force values (SFV) (P<0.05) than all other crossbreeds. Cost of gain was lower (P<0.05) for Hereford x Tuli compared the other breeds. Hereford x Tuli also had less protein (P<0.05) than to the other breeds.A second study was conducted comparing limit feeding (LF) vs. full feeding (FF) strategies. 23 steers and 27 heifers were penned by sex and were randomly assigned a treatment; 4 pens received the LF treatment and 4 were FF. ADG was lower (P<0.05) for LF and FF heifers compared to both LF and FF steers. Dressing percentage was lower (P<0.05) for LF steers compared to LF and FF Heifers. LF heifers YG was higher (P<0.05) compared to FF steers. Quality grades were higher (P<0.05) for LF and FF heifers compared to LF and FF steers. REA /cwt was significantly higher (P<0.05) for FF heifers compared to LF and FF steers. SFV were11lower (P<0.05) for FF heifers compared to LF and FF steers. A significant difference (P<0.05) in cost of gain was noted between LF steers and the rest, also between LF heifers and FF steers. Primal cut price/cwt was significantly lower (P<0.05) for LF heifers compared to FF steers. Lipid percentage was higher (P<0.05) LF heifers compared to FF steers. Moisture percentage was lower (P<0.05) for LF heifer compared to the other groups. Advisors/Committee Members: Marchello, John A (advisor), Fish, Dean (committeemember), Marchello, Elaine (committeemember), Tronstad, Russell (committeemember), Faulkner, Dan (committeemember), Marchello, John A. (committeemember).

Subjects/Keywords: Carcass Merit; Feedlot Performance; Limit Feeding; Soft Tissue Chemical Composition; Tenderness Evaluation; Animal Sciences; Beef Cattle Breeds

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

APA (6^th Edition):

Garcia, S. R. (2013). Comparison of Feedlot Performance, Carcass Merit and Chemical Composition of Crossbred Cattle . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/301690

Chicago Manual of Style (16^th Edition):

Garcia, Samuel Ruben. “Comparison of Feedlot Performance, Carcass Merit and Chemical Composition of Crossbred Cattle .” 2013. Doctoral Dissertation, University of Arizona. Accessed April 14, 2021. http://hdl.handle.net/10150/301690.

MLA Handbook (7^th Edition):

Garcia, Samuel Ruben. “Comparison of Feedlot Performance, Carcass Merit and Chemical Composition of Crossbred Cattle .” 2013. Web. 14 Apr 2021.

Vancouver:

Garcia SR. Comparison of Feedlot Performance, Carcass Merit and Chemical Composition of Crossbred Cattle . [Internet] [Doctoral dissertation]. University of Arizona; 2013. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10150/301690.

Council of Science Editors:

Garcia SR. Comparison of Feedlot Performance, Carcass Merit and Chemical Composition of Crossbred Cattle . [Doctoral Dissertation]. University of Arizona; 2013. Available from: http://hdl.handle.net/10150/301690

Utah State University

22. Brady, Tevan J. The Effects of Trace Mineral Supplementation on Performance, Health, and Carcass Quality of At-Risk Mineral Deficient Feedlot Cattle.

Degree: MS, Animal, Dairy, and Veterinary Sciences, 2021, Utah State University

URL: https://digitalcommons.usu.edu/etd/8019

► Morbidity in feedlot cattle due to disease is a common economical loss for feedlot producers. Utah is not typically considered a ‘feedlot state’, but… (more)

▼ Morbidity in feedlot cattle due to disease is a common economical loss for feedlot producers. Utah is not typically considered a ‘feedlot state’, but there are several producers in the southern part of the state that specialize in receiving at-risk cattle. These cattle are at-risk because they are coming from areas known to be mineral deficient. Areas such as the western US, are known to be deficient in several trace minerals important in immune response. Therefore, it is critical that producers have an adequate plan to decrease the negative effects that this has on economic viability of their beef operations, especially for those feedlots specializing in receiving at-risk cattle. In this study yearling Black Angus steers received one of four treatments: no mineral supplementation, oral supplementation of minerals provided at levels similar to NRC requirements, oral supplementation of minerals provided at levels above NRC requirements, or a MultiMin® injection at labeled dose. Liver and blood samples were collected to measure mineral status and cortisol levels. Back fat and ribeye area measurements were also recorded. Weight of the steers were recorded every two weeks to determine average daily gain and feed:gain ratio. At the end of the study, steers were harvested at a local harvesting plant and carcass traits were obtained and recorded. There were no differences in weight gain, overall average daily gain, dry matter intake, or feed:gain ratio between the different treatment groups. Steers that were fed the HM had increased liver copper and selenium concentrations, but there was no effect observed on liver manganese and zinc concentrations. Carcass quality and antibody titers did not differ between the different treatments. These data indicate that different mineral supplementation strategies have a diverse effect on feedlot performance and liver mineral concentrations over time, and additional research is needed to better understand these differences. Advisors/Committee Members: Kara J. Thornton-Kurth, Kerry A. Rood, Matthew Garcia, ;.

Subjects/Keywords: trace minerals; feedlot performance; beef cattle; carcass quality; feeding behavior; Animal Sciences; Dairy Science; Life Sciences; Veterinary Medicine

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APA (6^th Edition):

Brady, T. J. (2021). The Effects of Trace Mineral Supplementation on Performance, Health, and Carcass Quality of At-Risk Mineral Deficient Feedlot Cattle. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/8019

Chicago Manual of Style (16^th Edition):

Brady, Tevan J. “The Effects of Trace Mineral Supplementation on Performance, Health, and Carcass Quality of At-Risk Mineral Deficient Feedlot Cattle.” 2021. Masters Thesis, Utah State University. Accessed April 14, 2021. https://digitalcommons.usu.edu/etd/8019.

MLA Handbook (7^th Edition):

Brady, Tevan J. “The Effects of Trace Mineral Supplementation on Performance, Health, and Carcass Quality of At-Risk Mineral Deficient Feedlot Cattle.” 2021. Web. 14 Apr 2021.

Vancouver:

Brady TJ. The Effects of Trace Mineral Supplementation on Performance, Health, and Carcass Quality of At-Risk Mineral Deficient Feedlot Cattle. [Internet] [Masters thesis]. Utah State University; 2021. [cited 2021 Apr 14]. Available from: https://digitalcommons.usu.edu/etd/8019.

Council of Science Editors:

Brady TJ. The Effects of Trace Mineral Supplementation on Performance, Health, and Carcass Quality of At-Risk Mineral Deficient Feedlot Cattle. [Masters Thesis]. Utah State University; 2021. Available from: https://digitalcommons.usu.edu/etd/8019

Utah State University

23. Ineck, Nikole E. Effects of Bovine Maternal Nutrient Restriction on Offspring MicroRNA and mRNA Expression and Muscle Fiber Type.

Degree: MS, Animal, Dairy, and Veterinary Sciences, 2020, Utah State University

URL: https://digitalcommons.usu.edu/etd/7778

► For producers in more temperate areas, such as the Intermountain West, poor nutrition during the second trimester of gestation is common due to seasonal… (more)

Subjects/Keywords: fetal programming; mid-gestation; nutrient restriction; miRNA expression; feedlot performance; end-product quality; Animal Sciences; Other Nutrition

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APA (6^th Edition):

Ineck, N. E. (2020). Effects of Bovine Maternal Nutrient Restriction on Offspring MicroRNA and mRNA Expression and Muscle Fiber Type. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7778

Chicago Manual of Style (16^th Edition):

Ineck, Nikole E. “Effects of Bovine Maternal Nutrient Restriction on Offspring MicroRNA and mRNA Expression and Muscle Fiber Type.” 2020. Masters Thesis, Utah State University. Accessed April 14, 2021. https://digitalcommons.usu.edu/etd/7778.

MLA Handbook (7^th Edition):

Ineck, Nikole E. “Effects of Bovine Maternal Nutrient Restriction on Offspring MicroRNA and mRNA Expression and Muscle Fiber Type.” 2020. Web. 14 Apr 2021.

Vancouver:

Ineck NE. Effects of Bovine Maternal Nutrient Restriction on Offspring MicroRNA and mRNA Expression and Muscle Fiber Type. [Internet] [Masters thesis]. Utah State University; 2020. [cited 2021 Apr 14]. Available from: https://digitalcommons.usu.edu/etd/7778.

Council of Science Editors:

Ineck NE. Effects of Bovine Maternal Nutrient Restriction on Offspring MicroRNA and mRNA Expression and Muscle Fiber Type. [Masters Thesis]. Utah State University; 2020. Available from: https://digitalcommons.usu.edu/etd/7778

24. Oliveira, Lucas Vargas. Produção e qualidade da carcaça e da carne de bovinos de corte baseados em sistemas pastoris com ou sem uso de insumos em dois biomas no Sul do Brasil.

Degree: 2017, Brazil

URL: http://hdl.handle.net/10183/163881

►

O processo de intensificação dos sistemas alimentares na produção de ruminantes vem sendo o foco nas discussões políticas que implicam na segurança do alimento, bem-estar… (more)

▼

O processo de intensificação dos sistemas alimentares na produção de ruminantes vem sendo o foco nas discussões políticas que implicam na segurança do alimento, bem-estar animal e qualidade do produto cárneo. A possibilidade da diversificação alimentar em diferentes fases do crescimento animal, através de sistemas exclusivamente a pasto ou com concentrados na dieta, determina variações no desenvolvimento corporal do animal e nas características qualitativas da carne. Neste contexto, se procurou identificar através de dois protocolos experimentais localizados no Sul do Brasil, as características produtivas estacionais da forragem, desempenho animal, atributos da carcaça e físico-químicos da carne de bovinos de corte produzidos em diferentes sistemas alimentares. Periodicamente era determinada a espessura de gordura subcutânea (EGS) dos animais através de imagens de ultrassom, sendo essa utilizada como critério para o abate. O experimento 1 (Bioma Pampa) foi constituído de um delineamento completamente casualizado com três tratamentos (sistemas alimentares) e três repetições, durante a terminação dos novilhos até o abate (EGS, 3 a 6 mm). Os tratamentos foram: i) pastagem natural; ii) pastagem natural melhorada com fertilização e introdução de gramínea hibernal. iii) idem ao ii, porém abatidos com mais idade. O experimento 2, (campos de altitude do Bioma Mata Atlântica), constituiu-se de um delineamento completamente casualizado com cinco tratamentos e três repetições, durante a recria e terminação dos animais até o abate (EGS, 2 a 3 mm). Os tratamentos foram: i) pastagem natural; ii) pastagem natural melhorada com fertilização e introdução de gramínea e leguminosa hibernal; iii) pastagem cultivada de gramíneas hibernais em dois invernos; iv) pastagem cultivada (idem ao iii) com suplemento de 0,8% PV/dia-1; v) confinamento com relação de volumoso e concentrado (75:25) na dieta. Nos dois estudos, verificou-se que a carga animal utilizada determina alterações positivas na produção estacional de forragem nos dois ambientes experimentais. Na medida em que aumenta o processo de intensificação do sistema alimentar, houve um maior acúmulo de gordura subcutânea na carcaça reduzindo, portanto, a idade de abate dos animais. Sistemas pastoris naturais e naturais com baixo aporte de insumos permitem atributos físico-químicos desejáveis na carne, maior teor de CLA, elevada concentração de n-6 e n-3 e menor razão n-6/n-3 em relação aos sistemas mais intensivos com uso de grãos na dieta.

The process of intensifying food systems in ruminant production has recently been the focus of policy discussions on food safety, animal welfare and the quality of meat products. The possibility of feed diversification at different stages of animal growth, trhough diferent pasture systems or in feedlots, leads to changes in the animal's body development and meat quality. In this context, this thesis search to identify, through two experimental protocols localizated in southern Brazil, the seasonal productive characteristics of forage, animal…

Advisors/Committee Members: Nabinger, Carlos, Genro, Teresa Cristina Moraes.

Subjects/Keywords: Bovino de corte; Confinamento; Ácido graxo; Desempenho animal; Pastagem; Animal performance; Cultivated pasture; Fatty acids; Feedlot; Food system; Native grassland

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APA (6^th Edition):

Oliveira, L. V. (2017). Produção e qualidade da carcaça e da carne de bovinos de corte baseados em sistemas pastoris com ou sem uso de insumos em dois biomas no Sul do Brasil. (Doctoral Dissertation). Brazil. Retrieved from http://hdl.handle.net/10183/163881

Chicago Manual of Style (16^th Edition):

Oliveira, Lucas Vargas. “Produção e qualidade da carcaça e da carne de bovinos de corte baseados em sistemas pastoris com ou sem uso de insumos em dois biomas no Sul do Brasil.” 2017. Doctoral Dissertation, Brazil. Accessed April 14, 2021. http://hdl.handle.net/10183/163881.

MLA Handbook (7^th Edition):

Oliveira, Lucas Vargas. “Produção e qualidade da carcaça e da carne de bovinos de corte baseados em sistemas pastoris com ou sem uso de insumos em dois biomas no Sul do Brasil.” 2017. Web. 14 Apr 2021.

Vancouver:

Oliveira LV. Produção e qualidade da carcaça e da carne de bovinos de corte baseados em sistemas pastoris com ou sem uso de insumos em dois biomas no Sul do Brasil. [Internet] [Doctoral dissertation]. Brazil; 2017. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10183/163881.

Council of Science Editors:

Oliveira LV. Produção e qualidade da carcaça e da carne de bovinos de corte baseados em sistemas pastoris com ou sem uso de insumos em dois biomas no Sul do Brasil. [Doctoral Dissertation]. Brazil; 2017. Available from: http://hdl.handle.net/10183/163881

25. Cerqueira, Aline Barichello. Doença respiratória em bovinos confinados: aspectos patológicos e de desempenho produtivo.

Degree: 2017, Universidade Federal de Goiás; Programa de Pós-graduação em Ciência Animal (EVZ); UFG; Brasil; Escola de Veterinária e Zootecnia – EVZ (RG)

URL: http://repositorio.bc.ufg.br/tede/handle/tede/7999

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Made available in DSpace on 2017-11-29T13:27:20Z (GMT). No. of bitstreams: 2 Dissertação - Aline Barichello Cerqueira 2017.pdf: 4495463 bytes, checksum: 7ef02ea5cb5e35bb417877cf83766a80 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-07-31

The study consisted in two experiments at beef cattle feedlot in Goias state. The first analyzed the influence of macroscopic and histopathological changes in hot weight carcass (PCQ) of cattle. At the slaughter line, lungs were macroscopically evaluated and samples were collected for histopathological examination. Statistical analysis was performed by means of the analysis of variance and Tukey's test, with a significance level of 5%, comparing the PCQ values of the groups with lesions (CL) and without lesions (SL). Total of 2129 lungs were inspected, and 12.78% were identified with macroscopic alterations. The mainly pneumonias identified were fibrinous bronchopneumonia (4.78%), suppurative bronchopneumonia (4.04%), granulomatous pneumonia (3.68%) and interstitial pneumonia (1.47%). The PCQ values did not present significant differences (p> 0,05) between the CL and SL groups and were not influenced by macroscopic and histopathological changes. In the second article, the influence of dry (PS) and rainy (PC) periods on the macroscopic and histopathological pulmonary alterations and the average daily gain (GPD) of cattle were analyzed. At the slaughter line, the lungs were evaluated in the PS and PC periods. A macroscopic evaluation of the lungs was performed, and samples were collected for histopathological examination. Statistical analysis was performed using Tukey's test, with a significance level of 5%, to evaluate the effect of pulmonary lesions on the GPD. In order to evaluate the association of lesion frequency with the stations, a regression was performed considering a multinomial linear generalized model. Of the animals evaluated, 15.92% and 23.15% had macroscopic lung alterations in PS and PC, respectively. Among the pneumonias identified, the fibrinous bronchopneumonia (8,21%) predominated in the PS and suppurative bronchopneumonia (14,28%) in the PC. The PC had a higher frequency of macroscopic and histological lung lesions than PS. The lesions were predominantly mild to moderate and of low frequency and, therefore, did not significantly influence the GPD of confined cattle.

O estudo foi…

Advisors/Committee Members: Cunha, Paulo Henrique Jorge da, Sant’ana, Fabiano José Ferreira de, Borges, Naida Cristina, Cunha, Paulo Henrique Jorge da, Miguel, Marina Pacheco, Borges, José Renato Junqueira.

Subjects/Keywords: Bovino; Confinamento; Fatores meteorológicos; Patologia pulmonar; Performance produtiva; Cattle; Feedlot; Lung lesions; Meteorological factors; Productive performance; MEDICINA VETERINARIA PREVENTIVA::SAUDE ANIMAL (PROGRAMAS SANITARIOS)

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APA (6^th Edition):

Cerqueira, A. B. (2017). Doença respiratória em bovinos confinados: aspectos patológicos e de desempenho produtivo. (Masters Thesis). Universidade Federal de Goiás; Programa de Pós-graduação em Ciência Animal (EVZ); UFG; Brasil; Escola de Veterinária e Zootecnia – EVZ (RG). Retrieved from http://repositorio.bc.ufg.br/tede/handle/tede/7999

Chicago Manual of Style (16^th Edition):

Cerqueira, Aline Barichello. “Doença respiratória em bovinos confinados: aspectos patológicos e de desempenho produtivo.” 2017. Masters Thesis, Universidade Federal de Goiás; Programa de Pós-graduação em Ciência Animal (EVZ); UFG; Brasil; Escola de Veterinária e Zootecnia – EVZ (RG). Accessed April 14, 2021. http://repositorio.bc.ufg.br/tede/handle/tede/7999.

MLA Handbook (7^th Edition):

Cerqueira, Aline Barichello. “Doença respiratória em bovinos confinados: aspectos patológicos e de desempenho produtivo.” 2017. Web. 14 Apr 2021.

Vancouver:

Cerqueira AB. Doença respiratória em bovinos confinados: aspectos patológicos e de desempenho produtivo. [Internet] [Masters thesis]. Universidade Federal de Goiás; Programa de Pós-graduação em Ciência Animal (EVZ); UFG; Brasil; Escola de Veterinária e Zootecnia – EVZ (RG); 2017. [cited 2021 Apr 14]. Available from: http://repositorio.bc.ufg.br/tede/handle/tede/7999.

Council of Science Editors:

Cerqueira AB. Doença respiratória em bovinos confinados: aspectos patológicos e de desempenho produtivo. [Masters Thesis]. Universidade Federal de Goiás; Programa de Pós-graduação em Ciência Animal (EVZ); UFG; Brasil; Escola de Veterinária e Zootecnia – EVZ (RG); 2017. Available from: http://repositorio.bc.ufg.br/tede/handle/tede/7999

26. Walter, Lee-Anne Judy. Comparison of wheat or corn dried distillers grains with solubles on performance, carcass characteristics, rumen fermentation parameters and diet digestibility of feedlot cattle.

Degree: 2010, University of Saskatchewan

URL: http://hdl.handle.net/10388/etd-01292010-172749

► Two trials were conducted, one using crossbred steers (Trial 1; N=275; 376±24 kg) and a second using Hereford heifers (Trial 2; N=5; 420±6 kg) to… (more)

Subjects/Keywords: wheat; cattle; DDGS; corn; feedlot performance; carcass quality

…research with regards to the effect of corn DDGS in feedlot cattle rations on cattle performance… …rations on feedlot performance, carcass characteristics, rumen fermentation and digestibility in… …value of corn and 2 wheat DDGS in feedlot finishing diets from a performance, carcass… …Distiller Grains Inclusion on Feedlot Performance The vast majority of corn distiller grains… …Klopfenstein et al. 2008). 18 2.2.2.2 Performance of Feedlot Cattle Fed Corn DDGS in…

5 more images…

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APA (6^th Edition):

Walter, L. J. (2010). Comparison of wheat or corn dried distillers grains with solubles on performance, carcass characteristics, rumen fermentation parameters and diet digestibility of feedlot cattle. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-01292010-172749

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):

Walter, Lee-Anne Judy. “Comparison of wheat or corn dried distillers grains with solubles on performance, carcass characteristics, rumen fermentation parameters and diet digestibility of feedlot cattle.” 2010. Thesis, University of Saskatchewan. Accessed April 14, 2021. http://hdl.handle.net/10388/etd-01292010-172749.

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

MLA Handbook (7^th Edition):

Walter, Lee-Anne Judy. “Comparison of wheat or corn dried distillers grains with solubles on performance, carcass characteristics, rumen fermentation parameters and diet digestibility of feedlot cattle.” 2010. Web. 14 Apr 2021.

Vancouver:

Walter LJ. Comparison of wheat or corn dried distillers grains with solubles on performance, carcass characteristics, rumen fermentation parameters and diet digestibility of feedlot cattle. [Internet] [Thesis]. University of Saskatchewan; 2010. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10388/etd-01292010-172749.

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

Council of Science Editors:

Walter LJ. Comparison of wheat or corn dried distillers grains with solubles on performance, carcass characteristics, rumen fermentation parameters and diet digestibility of feedlot cattle. [Thesis]. University of Saskatchewan; 2010. Available from: http://hdl.handle.net/10388/etd-01292010-172749

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

Kansas State University

27. Uwituze, Solange. The effects of feeding dry distiller’s grains with solubles on ruminal metabolism, growth performance, and carcass traits of feedlot cattle.

Degree: MS, Department of Animal Sciences and Industry, 2008, Kansas State University

URL: http://hdl.handle.net/2097/801

► Three trials were conducted using dried distiller's grains with solubles (DDGS) to evaluate effects on feedlot performance, carcass characteristics, ruminal fermentation, and diet digestibility in… (more)

▼ Three trials were conducted using dried distiller's grains with solubles (DDGS) to evaluate effects on feedlot performance, carcass characteristics, ruminal fermentation, and diet digestibility in cattle fed steam-flaked corn-based diets. In trial 1, crossbred yearling heifers were used in a finishing trial to evaluate interactions between corn-DDGS feeding levels and roughage source (alfalfa hay vs corn silage) in terms of impact on feedlot performance and carcass characteristics. Experimental diets were based on steam-flaked corn and contained 0% DDGS with 6% alfalfa hay (AH), 0% DDGS with 10% corn silage (CS), 25% DDGS with 6% AH, or 25% DDGS with 10% CS (DM basis). Results indicated no interaction between levels of DDGS and roughage source. Heifers fed DDGS as a partial replacement for steam-flaked corn had similar growth performance and carcass merit compared to heifers fed diets without DDGS. Corn silage and alfalfa hay were comparable roughages when a portion of steam-flaked corn was replaced with DDGS. The second trial was a companion metabolism study in which ruminal fermentation characteristics and diet digestibility were examined in 12 cannulated Holstein steers fed steam-flaked corn finishing diets with or without DDGS, using alfalfa hay or corn silage as roughage sources. Diets were similar to those fed in the performance study and consisted of steam-flaked corn with 0 or 25% DDGS (DM basis) and 6% AH or 10% CS (DM basis). Feeding DDGS decreased ruminal pH and ruminal ammonia concentrations, and digestion of DM and OM were less compared to diets without DDGS. The decrease in digestibility was largely attributable to poorer digestion of CP and, to a lesser extent, a reduction in starch digestion. The third study was designed to investigate effects of pH (5.0, 5.5, and 6.0) on in vitro fermentative activity by ruminal microorganisms from cattle adapted to a finishing diet containing 25% DDGS (DM basis). Higher pH led to greater dry matter disappearance in vitro (P < 0.01). DDGS can be an effective substitute for steam-flaked corn. Efforts to address low ruminal pH and low ruminal ammonia may prove beneficial for improving value of DDGS as cattle feed. Advisors/Committee Members: James S. Drouillard.

Subjects/Keywords: Distiller's grains; Ruminal metabolism; Ruminal pH; Digestibility; Feedlot cattle; Growth performance; Agriculture, Animal Culture and Nutrition (0475)

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APA (6^th Edition):

Uwituze, S. (2008). The effects of feeding dry distiller’s grains with solubles on ruminal metabolism, growth performance, and carcass traits of feedlot cattle. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/801

Chicago Manual of Style (16^th Edition):

Uwituze, Solange. “The effects of feeding dry distiller’s grains with solubles on ruminal metabolism, growth performance, and carcass traits of feedlot cattle.” 2008. Masters Thesis, Kansas State University. Accessed April 14, 2021. http://hdl.handle.net/2097/801.

MLA Handbook (7^th Edition):

Uwituze, Solange. “The effects of feeding dry distiller’s grains with solubles on ruminal metabolism, growth performance, and carcass traits of feedlot cattle.” 2008. Web. 14 Apr 2021.

Vancouver:

Uwituze S. The effects of feeding dry distiller’s grains with solubles on ruminal metabolism, growth performance, and carcass traits of feedlot cattle. [Internet] [Masters thesis]. Kansas State University; 2008. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2097/801.

Council of Science Editors:

Uwituze S. The effects of feeding dry distiller’s grains with solubles on ruminal metabolism, growth performance, and carcass traits of feedlot cattle. [Masters Thesis]. Kansas State University; 2008. Available from: http://hdl.handle.net/2097/801

28. Nara Regina Brandão Consolo. Utilização do grão de soja cru integral na dieta de bovinos de corte confinados.

Degree: 2011, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/10/10135/tde-23032012-141438/

► Objetivou-se avaliar o uso do grão de soja cru integral na dieta de bovinos de corte sobre o consumo e digestibilidade da matéria seca e… (more)

▼ Objetivou-se avaliar o uso do grão de soja cru integral na dieta de bovinos de corte sobre o consumo e digestibilidade da matéria seca e nutrientes, fermentação ruminal, desempenho produtivo, síntese de proteína microbiana, características de carcaça qualidade da carne, perfil de ácidos graxos da carne, concentrações de parâmetros sanguíneos, excreção e composição do grão de soja presente nas fezes. Foram realizados dois experimentos, sendo que no primeiro, foram utilizados 12 bovinos Nelore, castrados, canulados no rúmen, agrupados em três quadrados latinos 4x4. No segundo experimento foram utilizados 52 bovinos Nelore, inteiros, confinados por 84 dias, em delineamento inteiramente casualizado. A dieta empregada foi a mesma, para ambos os experimentos, constituída de quatro rações, com relação volumoso/concentrado de 60/40, a qual foi composta de milho moído, farelo de soja, grão de soja cru integral, núcleo e silagem de milho. As dietas foram: G0: dieta controle sem a inclusão do grão de soja; G8, G16 e G24, com 8, 16 e 24%, respectivamente de grão de soja cru integral na ração, na matéria seca. No Experimento 1, amostras de fezes e sobras foram coletadas nos 11o, 12o 13o dia experimento, amostras de sangue e urina foram colhidas e avaliado o peso vivo. A digestibilidade foi determinada por meio de indicador interno FDAi. No Experimento 2, a cada 28 dias, os animais foram pesados e amostras de sangue foram coletadas. Os animais foram abatidos ao 85o dia e foi avaliado o peso do fígado (PFi) e peso de carcaça quente (PCQ). Vinte e quatro horas após o abate, foram mensurados o pH, e rendimento de carcaça (RC). Na desossa foi avaliada a área de olho de lombo (AOL) e a espessura de gordura subcutânea (EGS) no músculo Longissimus. Foram retiradas amostras do músculo Longissimus, para determinação do perfil de ácidos graxos na carne (PAG) extrato etéreo (EE), maciez objetiva e sensorial da carne maturada por 14 dias. Houve redução no consumo de matéria seca, matéria orgânica, de carboidratos totais e carboidratos não fibrosos nos animais alimentados com a ração G24. Foi observado efeito linear crescente no consumo de EE e efeito quadrático no consumo de proteína bruta. Houve diferença na digestibilidade aparente total do EE e carboidratos totais com a adição do grão de soja na dieta. Na fermentação ruminal, houve queda linear no valor de pH ruminal e a concentração de nitrogênio amoniacal ruminal foi maior para os animais que receberam a dieta controle em relação às dietas com grão de soja, havendo um maior valor de ácidos graxos de cadeia curta para o grupo controle. O teor de colesterol sanguíneo aumentou linearmente com a inclusão do grão e no primeiro experimento também houve aumento do colesterol HDL. Para desempenho, atributos de carcaça e medidas de ultrassonografia não foi observado efeito de acordo com a dieta. Houve efeito quadrático para força de cisalhamento (FC), com maior valor para a carne dos animais que receberam 8% do grão de soja, Houve uma discreta melhora no perfil lipídico para animais recebendo o… Advisors/Committee Members: Angélica Simone Cravo Pereira, Mário de Beni Arrigoni, Francisco Palma Rennó.

Subjects/Keywords: Confinamento; Desempenho; Digestibilidade; Lipídio; Parâmetros sanguíneos; Perfil de ácidos graxos; Blood parameters; Digestibility; Fatty acid profile; Feedlot; Lipid; Performance

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

APA (6^th Edition):

Consolo, N. R. B. (2011). Utilização do grão de soja cru integral na dieta de bovinos de corte confinados. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/10/10135/tde-23032012-141438/

Chicago Manual of Style (16^th Edition):

Consolo, Nara Regina Brandão. “Utilização do grão de soja cru integral na dieta de bovinos de corte confinados.” 2011. Masters Thesis, University of São Paulo. Accessed April 14, 2021. http://www.teses.usp.br/teses/disponiveis/10/10135/tde-23032012-141438/.

MLA Handbook (7^th Edition):

Consolo, Nara Regina Brandão. “Utilização do grão de soja cru integral na dieta de bovinos de corte confinados.” 2011. Web. 14 Apr 2021.

Vancouver:

Consolo NRB. Utilização do grão de soja cru integral na dieta de bovinos de corte confinados. [Internet] [Masters thesis]. University of São Paulo; 2011. [cited 2021 Apr 14]. Available from: http://www.teses.usp.br/teses/disponiveis/10/10135/tde-23032012-141438/.

Council of Science Editors:

Consolo NRB. Utilização do grão de soja cru integral na dieta de bovinos de corte confinados. [Masters Thesis]. University of São Paulo; 2011. Available from: http://www.teses.usp.br/teses/disponiveis/10/10135/tde-23032012-141438/

29. Gabriela Aferri. Desempenho e características da carcaça de novilhos alimentados com dietas contendo diferentes fontes de gordura.

Degree: 2003, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/74/74131/tde-01092003-094100/

►

Fontes de lipídios para animais em confinamento vem sendo testadas para melhorar o desempenho animal. Neste sentido, este trabalho avaliou o desempenho animal, as características… (more)

▼

Fontes de lipídios para animais em confinamento vem sendo testadas para melhorar o desempenho animal. Neste sentido, este trabalho avaliou o desempenho animal, as características da carcaça e da maciez da carne de 36 novilhos mestiços (aproximadamente ¾ Bos taurus taurus, filhos de vacas cruzadas Simental x Nelore com touros Brangus), com idade e pesos vivos médios de 14 meses e 320 kg, respectivamente. O experimento foi realizado no setor de Bovinocultura da FZEA, USP, onde foram avaliadas três dietas com 81% de concentrado, sendo uma ração com 5% de gordura protegida (GP), uma ração com 21% de caroço de algodão (CA) e uma ração controle (CT) sem gordura adicional. A ingestão de matéria seca com a ração GP foi menor (P<0,05) que a ingestão com a ração CA, que não diferiu da ração CT, sem que o ganho médio diário e a eficiência alimentar apresentassem diferenças significativas entre os tratamentos. Os valores encontrados para a análise de uréia sangüínea estiveram dentro do considerado normal, havendo um valor significativamente maior para o tratamento CA em relação ao tratamento GP. O rendimento de carcaça, a área de olho de lombo, a espessura de gordura, a gordura renal e pélvica e o peso do fígado não foram significativamente diferentes. Os índices de pH e temperatura, tanto na primeira hora após o abate como 24 horas depois, não foram significativamente diferentes e os valores encontrados estão dentro do esperado. O índice de perda de água no cozimento não foi significativamente diferente entre os tratamentos, o mesmo ocorrendo com a análise de maciez, verificada através das forças de cisalhamento nos diferentes tempos de maturação. Os valores entre 3,0 e 3,5 kg encontrados neste trabalho correspondem a uma carne muito macia, que ainda poderia ser melhorada com a maturação por 14 dias. A gordura protegida a 5% e o caroço de algodão a 21% podem ser empregados nas rações de confinamento sem que alterem o desempenho animal ou a carcaça, sempre que o preço destes ingredientes for economicamente vantajoso.

Several fat sources have been utilized in feedlot diets to improve animal performance. This study carried out at the Beef Cattle Sector of the FZEA, USP, evaluated the performance and carcass and meat characteristics of 36 crossbred steers (approximately ¾ Bos taurus taurus, offspring of crossbred Simental cow x Brangus sire), with 14 months old on the average and 320 kg, fed diets with 81% concentrate and 5% protected fat (GP), or 21% whole cotton seed (CA), or without any additional fat (CT). The dry matter intake of the GP diet was lower than with the CA diet, which was not different from the CT diet, but with no effect on daily weight gain and feed efficiency. Blood urea nitrogen was greater for the CA treatment than GP treatment, but in the normal range. Carcass dressing, rib eye area, fat thickness, kidney and pelvic fat, and liver weight were not different among treatments. The pH and temperature in the first hour and after 24 hours of chilling were not different and in the normal range. There was…

Advisors/Committee Members: Paulo Roberto Leme, Albino Luchiari Filho, Alexandre Amstalden Moraes Sampaio.

Subjects/Keywords: carcaça; caroço de algodão; confinamento bovino; gordura protegida; carcass characteristics; feedlot performance; protected fat; whole cottonseed

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

APA (6^th Edition):

Aferri, G. (2003). Desempenho e características da carcaça de novilhos alimentados com dietas contendo diferentes fontes de gordura. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/74/74131/tde-01092003-094100/

Chicago Manual of Style (16^th Edition):

Aferri, Gabriela. “Desempenho e características da carcaça de novilhos alimentados com dietas contendo diferentes fontes de gordura.” 2003. Masters Thesis, University of São Paulo. Accessed April 14, 2021. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-01092003-094100/.

MLA Handbook (7^th Edition):

Aferri, Gabriela. “Desempenho e características da carcaça de novilhos alimentados com dietas contendo diferentes fontes de gordura.” 2003. Web. 14 Apr 2021.

Vancouver:

Aferri G. Desempenho e características da carcaça de novilhos alimentados com dietas contendo diferentes fontes de gordura. [Internet] [Masters thesis]. University of São Paulo; 2003. [cited 2021 Apr 14]. Available from: http://www.teses.usp.br/teses/disponiveis/74/74131/tde-01092003-094100/.

Council of Science Editors:

Aferri G. Desempenho e características da carcaça de novilhos alimentados com dietas contendo diferentes fontes de gordura. [Masters Thesis]. University of São Paulo; 2003. Available from: http://www.teses.usp.br/teses/disponiveis/74/74131/tde-01092003-094100/

30. Williams, Melissa Sylvie. Natural Feed Additives for Feedlot Beef Cattle: Impact of a Fibrolytic Enzyme Additive on Digestibility and Performance in the Grower Phase, and Saccharomyces cerevisiae Impacts on Rumen Health and Performance in the Finishing Phase.

Degree: MS, Department of Animal Biosciences, 2019, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14740

► The objectives of this study were to improve the nutrient value of the fibre portion in grower phase diet for feedlot cattle using a fibrolytic… (more)

Subjects/Keywords: Enzyme; Yeast; Saccharomyces cerevisiae; Feedlot; Beef cattle; Feed additives; Performance; Digestibility; Rumen health; Immune response; Ruminal pH

…effects of fibrolytic enzyme use on feedlot cattle performance in multiple studies. Multiple… …49 Table 4: Effects of enzyme addition on grower phase performance from day 1-80 of study… …50 Table 5: Effects of enzyme addition on transition phase performance from day 81-97 . 51… …Table 6: Effects of enzyme addition on early finisher phase performance from day 98157… …52 Table 7: Effects of enzyme addition on total performance over entire experiment one from…

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

APA (6^th Edition):

Williams, M. S. (2019). Natural Feed Additives for Feedlot Beef Cattle: Impact of a Fibrolytic Enzyme Additive on Digestibility and Performance in the Grower Phase, and Saccharomyces cerevisiae Impacts on Rumen Health and Performance in the Finishing Phase. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14740

Chicago Manual of Style (16^th Edition):

Williams, Melissa Sylvie. “Natural Feed Additives for Feedlot Beef Cattle: Impact of a Fibrolytic Enzyme Additive on Digestibility and Performance in the Grower Phase, and Saccharomyces cerevisiae Impacts on Rumen Health and Performance in the Finishing Phase.” 2019. Masters Thesis, University of Guelph. Accessed April 14, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14740.

MLA Handbook (7^th Edition):

Williams, Melissa Sylvie. “Natural Feed Additives for Feedlot Beef Cattle: Impact of a Fibrolytic Enzyme Additive on Digestibility and Performance in the Grower Phase, and Saccharomyces cerevisiae Impacts on Rumen Health and Performance in the Finishing Phase.” 2019. Web. 14 Apr 2021.

Vancouver:

Williams MS. Natural Feed Additives for Feedlot Beef Cattle: Impact of a Fibrolytic Enzyme Additive on Digestibility and Performance in the Grower Phase, and Saccharomyces cerevisiae Impacts on Rumen Health and Performance in the Finishing Phase. [Internet] [Masters thesis]. University of Guelph; 2019. [cited 2021 Apr 14]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14740.

Council of Science Editors:

Williams MS. Natural Feed Additives for Feedlot Beef Cattle: Impact of a Fibrolytic Enzyme Additive on Digestibility and Performance in the Grower Phase, and Saccharomyces cerevisiae Impacts on Rumen Health and Performance in the Finishing Phase. [Masters Thesis]. University of Guelph; 2019. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14740

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