The Professional Animal Scientist最新文献_第4页

Blood serum mineral element concentrations of weaned Montana ram lambs and their relationship with water quality characteristics 蒙大拿公羊断奶羔羊血清矿质元素浓度及其与水质特性的关系

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/pas.2018-01747

C.M. Page , T.W. Murphy , M.L. Van Emon , J.G.P. Bowman , S.A. Wyffels , W.C. Stewart

{"title":"Blood serum mineral element concentrations of weaned Montana ram lambs and their relationship with water quality characteristics","authors":"C.M. Page , T.W. Murphy , M.L. Van Emon , J.G.P. Bowman , S.A. Wyffels , W.C. Stewart","doi":"10.15232/pas.2018-01747","DOIUrl":"https://doi.org/10.15232/pas.2018-01747","url":null,"abstract":"<div>Clinical and subclinical trace mineral deficiencies can limit productivity in western sheep production systems. The objective of this research was to determine the proportion of ranches that supplemented with trace minerals and to quantify serum trace mineral concentrations in ram lambs after weaning across Montana with particular emphasis on Se and Zn. Serum samples (n = 214) were collected from ram lambs 8 to 10 mo of age (52.8 ± 16 kg) at 21 ranches throughout Montana and analyzed for Co, Cu, Fe, Mn, Mo, Se, and Zn. Ranches were classified as deficient, marginally deficient, adequate, or excessive by flock mean serum trace mineral concentrations. Additionally, water samples were analyzed for pertinent characteristics. The median and interquartile range of serum concentrations for each trace mineral across ranches were as follows: Co (0.41 ng/mL; 0.90 ng/mL), Cu (0.79 μg/mL; 0.24 μg/mL), Fe (153 μg/dL; 52 μg/dL), Mn (1.70 ng/mL; 0.80 ng/mL), Mo (15.3 ng/mL; 19.3 ng/mL), Se (115 ng/mL; 97.5 ng/mL), and Zn (0.70 μg/mL, 0.19 μg/mL). Of ranches surveyed, 67% provided a trace mineral supplement. Ranches that provided supplementary trace mineral had greater serum Se concentrations (P < 0.001). The 2 most commonly deficient and marginally deficient minerals across Montana were Se (19% of ranches deficient; 23.8% of ranches marginally deficient) and Zn (9.5% of ranches deficient; 57.1% of ranches marginally deficient). Regionally, Se serum samples classified as deficient were all located in western Montana. Of ranches sampled, 40 and 35% of water samples exceeded upper desired concentrations for Na and sulfates, respectively.</div>","PeriodicalId":22841,"journal":{"name":"The Professional Animal Scientist","volume":"34 5","pages":"Pages 410-420"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15232/pas.2018-01747","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91621476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Evaluation of whole flaxseed and the use of tannin-containing fava beans as an alternative to peas in a co-extruded flaxseed product on ruminal fermentation, selected milk fatty acids, and production in dairy cows 评价全亚麻籽和使用含单宁的蚕豆作为共挤亚麻籽产品中豌豆的替代品对瘤胃发酵、选定的乳脂肪酸和奶牛生产的影响

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/pas.2018-01726

J. Moats , T. Mutsvangwa , B. Refat , D.A. Christensen

{"title":"Evaluation of whole flaxseed and the use of tannin-containing fava beans as an alternative to peas in a co-extruded flaxseed product on ruminal fermentation, selected milk fatty acids, and production in dairy cows","authors":"J. Moats , T. Mutsvangwa , B. Refat , D.A. Christensen","doi":"10.15232/pas.2018-01726","DOIUrl":"https://doi.org/10.15232/pas.2018-01726","url":null,"abstract":"<div>This study evaluated the effects of whole versus extruded flaxseed and the use of tannin-containing fava beans as a replacement for peas in an extruded flaxseed-based supplement on rumen fermentation, selected milk fatty acids, and production in dairy cows. Eight Holstein cows were used in a replicated 4 × 4 Latin square consisting of 28-d periods. Cows were fed a control diet (CONT) or 1 of 3 diets that contained a whole flaxseed supplement (FLX), an extruded flaxseed and pea supplement (EXT; linPRO-R, O&T Farms Ltd., Regina, SK, Canada), or an extruded flaxseed and tannin-containing fava bean supplement (EXTT). Dry matter intake was less in cows fed FLX, EXT, and EXTT compared with those fed CONT (P = 0.006). Milk yield was greater in cows fed EXT (44.4 kg/d) compared with those fed FLX (42.3 kg/d; P = 0.023) and tended to be greater in cows fed FLX, EXT, and EXTT (average 43.5 kg/d) compared with those fed CONT (41.9 kg/d; P = 0.073). Milk fat percentage was less in cows fed FLX, EXT, and EXTT compared with those fed CONT (P = 0.033); however, milk fat yield was unaffected. The C18:3n-3 and cis-9, trans-11 conjugated linoleic acid fatty acids were greater in milk of cows fed EXT compared with those fed FLX (P = 0.001). No differences in milk fatty acid composition were observed between EXT and EXTT. These results demonstrate that feeding extruded flaxseed supplements containing peas or tannin-containing fava beans effectively improve milk yield and milk fatty acid profile when compared with whole flaxseed.</div>","PeriodicalId":22841,"journal":{"name":"The Professional Animal Scientist","volume":"34 5","pages":"Pages 435-446"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15232/pas.2018-01726","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91621477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Evaluation of whole flaxseed and the use of tannin-containing fava beans as an alternative to peas in a co-extruded flaxseed product on ruminal fermentation, selected milk fatty acids, and production in dairy cows 评价全亚麻籽和使用含单宁的蚕豆作为共挤亚麻籽产品中豌豆的替代品对瘤胃发酵、选定的乳脂肪酸和奶牛生产的影响

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/PAS.2018-01726

J. Moats, T. Mutsvangwa, B. Refat, D. Christensen

{"title":"Evaluation of whole flaxseed and the use of tannin-containing fava beans as an alternative to peas in a co-extruded flaxseed product on ruminal fermentation, selected milk fatty acids, and production in dairy cows","authors":"J. Moats, T. Mutsvangwa, B. Refat, D. Christensen","doi":"10.15232/PAS.2018-01726","DOIUrl":"https://doi.org/10.15232/PAS.2018-01726","url":null,"abstract":"ABSTRACT This study evaluated the effects of whole versus extruded flaxseed and the use of tannin-containing fava beans as a replacement for peas in an extruded flaxseed-based supplement on rumen fermentation, selected milk fatty acids, and production in dairy cows. Eight Holstein cows were used in a replicated 4 × 4 Latin square consisting of 28-d periods. Cows were fed a control diet (CONT) or 1 of 3 diets that contained a whole flaxseed supplement (FLX), an extruded flaxseed and pea supplement (EXT; linPRO-R, OT P = 0.023) and tended to be greater in cows fed FLX, EXT, and EXTT (average 43.5 kg/d) compared with those fed CONT (41.9 kg/d; P = 0.073). Milk fat percentage was less in cows fed FLX, EXT, and EXTT compared with those fed CONT (P = 0.033); however, milk fat yield was unaffected. The C18:3n-3 and cis-9, trans-11 conjugated linoleic acid fatty acids were greater in milk of cows fed EXT compared with those fed FLX (P = 0.001). No differences in milk fatty acid composition were observed between EXT and EXTT. These results demonstrate that feeding extruded flaxseed supplements containing peas or tannin-containing fava beans effectively improve milk yield and milk fatty acid profile when compared with whole flaxseed.","PeriodicalId":22841,"journal":{"name":"The Professional Animal Scientist","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88909138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Effects of intake of linseed oil or tallow on nutrient digestion and nitrogen balance of beef steers consuming diets based on dry-rolled corn 亚麻籽油和牛脂对干卷玉米日粮肉牛营养物质消化和氮平衡的影响

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/PAS.2018-01759

E. J. Blom, D. Brake

{"title":"Effects of intake of linseed oil or tallow on nutrient digestion and nitrogen balance of beef steers consuming diets based on dry-rolled corn","authors":"E. J. Blom, D. Brake","doi":"10.15232/PAS.2018-01759","DOIUrl":"https://doi.org/10.15232/PAS.2018-01759","url":null,"abstract":"ABSTRACT Lipids can have detrimental effects on the ruminal microbiota and, subsequently, diet digestibility. We evaluated effects of amount and source of dietary lipid on nutrient digestibility, ruminal fermentation, and N balance in cattle consuming diets based on dry-rolled corn. Five steers (BW = 392 ± 15 kg) fitted with ruminal, duodenal, and ileal cannulas were used in a 5 × 5 Latin square with 12-d periods. Diets contained no added lipid or 4 or 8% added lipid from either a tallow or linseed oil. Linseed oil tended (P = 0.08) to decrease DMI compared with tallow. Greater amounts of lipid tended to decrease ruminal digestion of DM (P = 0.07), OM (P = 0.14), and NDF (P = 0.05). Microbial efficiency (g of microbial N/kg of OM fermented) tended to increase (P = 0.10) with added lipid, but microbial N flow to the duodenum was not affected (P ≥ 0.19) by amount or source of lipid. Ruminal pH (P ≥ 0.83), ammonia (P ≥ 0.33), and total organic acid content (P ≥ 0.54) were not affected by diet lipid. Added dietary lipid tended (P = 0.10) to decrease ruminal acetate concentrations. Addition of a more unsaturated lipid (linseed oil) decreased (P = 0.05) total-tract NDF digestibility compared with a more saturated lipid (tallow), and addition of lipid tended to decrease digestion of DM (P = 0.13) and NDF (P = 0.08) compared with control. Linseed oil decreased (P","PeriodicalId":22841,"journal":{"name":"The Professional Animal Scientist","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82506526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effects of intake of linseed oil or tallow on nutrient digestion and nitrogen balance of beef steers consuming diets based on dry-rolled corn 亚麻籽油和牛脂对干卷玉米日粮肉牛营养物质消化和氮平衡的影响

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/pas.2018-01759

E.J. Blom PAS, D.W. Brake

{"title":"Effects of intake of linseed oil or tallow on nutrient digestion and nitrogen balance of beef steers consuming diets based on dry-rolled corn","authors":"E.J. Blom PAS, D.W. Brake","doi":"10.15232/pas.2018-01759","DOIUrl":"https://doi.org/10.15232/pas.2018-01759","url":null,"abstract":"<div>Lipids can have detrimental effects on the ruminal microbiota and, subsequently, diet digestibility. We evaluated effects of amount and source of dietary lipid on nutrient digestibility, ruminal fermentation, and N balance in cattle consuming diets based on dry-rolled corn. Five steers (BW = 392 ± 15 kg) fitted with ruminal, duodenal, and ileal cannulas were used in a 5 × 5 Latin square with 12-d periods. Diets contained no added lipid or 4 or 8% added lipid from either a tallow or linseed oil. Linseed oil tended (P = 0.08) to decrease DMI compared with tallow. Greater amounts of lipid tended to decrease ruminal digestion of DM (P = 0.07), OM (P = 0.14), and NDF (P = 0.05). Microbial efficiency (g of microbial N/kg of OM fermented) tended to increase (P = 0.10) with added lipid, but microbial N flow to the duodenum was not affected (P ≥ 0.19) by amount or source of lipid. Ruminal pH (P ≥ 0.83), ammonia (P ≥ 0.33), and total organic acid content (P ≥ 0.54) were not affected by diet lipid. Added dietary lipid tended (P = 0.10) to decrease ruminal acetate concentrations. Addition of a more unsaturated lipid (linseed oil) decreased (P = 0.05) total-tract NDF digestibility compared with a more saturated lipid (tallow), and addition of lipid tended to decrease digestion of DM (P = 0.13) and NDF (P = 0.08) compared with control. Linseed oil decreased (P < 0.01) fecal N and tended to reduce (P = 0.08) urinary N.</div>","PeriodicalId":22841,"journal":{"name":"The Professional Animal Scientist","volume":"34 5","pages":"Pages 447-459"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15232/pas.2018-01759","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91621475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Case Study: Effects of inclusion of wet brewers grains on the growth performance, carcass characteristics, and meat quality of finishing cattle 案例研究:添加湿啤酒颗粒对育肥牛生长性能、胴体特性和肉品质的影响

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/pas.2018-01725

R.T. Parmenter, J.W. Rickard, D.M. James

{"title":"Case Study: Effects of inclusion of wet brewers grains on the growth performance, carcass characteristics, and meat quality of finishing cattle","authors":"R.T. Parmenter, J.W. Rickard, D.M. James","doi":"10.15232/pas.2018-01725","DOIUrl":"10.15232/pas.2018-01725","url":null,"abstract":"<div>Wet brewers grains (WBG) are an increasingly available by-product of the growing craft beer industry that may be useful in finishing cattle rations. Therefore, the objective of this pilot study was to determine the effects of including WBG sourced from craft brewing on the growth performance, carcass characteristics, and meat quality of finishing steers and heifers. Twenty-four [n = 24; 12 heifers (303 kg), 12 steers (346 kg)] crossbred calves were blocked by BW within sex to 12 pens (2 calves of the same sex per pen) in a 2 × 2 factorial arrangement with 3 replications per treatment and fed for 140 d. Model factors included calf sex and finishing diet [corn silage and whole shelled corn finishing diet (control) and control + 7.2% WBG]. Primal ribs (Institutional Meat Purchase Specification #103) were obtained and rib eye steaks (Institutional Meat Purchase Specification #1112) were fabricated from the 9th to 11th rib portion for additional analyses. No differences were observed in total gain, ADG, or G:F between diets (P > 0.05). However, there was a diet × sex interaction (P < 0.001) for DMI in which inclusion of WBG increased DMI in heifers compared with steers. There were no differences (P > 0.05) in HCW, YG, or marbling score, but rib fat thickness was less (P = 0.020) in WBG calves than in control calves. Diet did not alter Warner-Bratzler shear force, package purge, or cook loss measurements (P > 0.05). These data indicate low-level inclusion of WBG can maintain performance and quality of finishing cattle similar to conventional finishing diets.</div>","PeriodicalId":22841,"journal":{"name":"The Professional Animal Scientist","volume":"34 5","pages":"Pages 505-512"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15232/pas.2018-01725","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85682786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Case Study: Regional assessment of mineral element concentrations in Idaho forage and range grasses 案例研究:爱达荷州牧草和牧场牧草中矿物元素浓度的区域评估

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/pas.2017-01715

J.E. Sprinkle , S.D. Baker , J.A. Church , J.R. Findlay , S.M. Graf , K.S. Jensen , S.K. Williams , C.M. Willmore , J.B. Lamb PAS , D.W. Hansen

{"title":"Case Study: Regional assessment of mineral element concentrations in Idaho forage and range grasses","authors":"J.E. Sprinkle , S.D. Baker , J.A. Church , J.R. Findlay , S.M. Graf , K.S. Jensen , S.K. Williams , C.M. Willmore , J.B. Lamb PAS , D.W. Hansen","doi":"10.15232/pas.2017-01715","DOIUrl":"10.15232/pas.2017-01715","url":null,"abstract":"<div>The objective was to quantify forage mineral concentrations in Idaho and evaluate changes due to seasonality and irrigation. Forage was sampled on rangeland and irrigated pastures in summer and fall from 35 locations in 9 counties and analyzed for Ca, P, K, Mg, S, Na, Zn, Fe, Mn, Cu, Mo, Co, and Se. Statistical analysis was by pasture type using mixed model repeated measures with fixed effects being county, season, and county × season. Location within county was a random effect. Samples were also analyzed by soil type with type of forage, season, and type × season as fixed effects and location within soil type as the repeated random effect. The macrominerals P, Mg, and Na were deficient in rangeland forage, and Na was deficient in irrigated forage. Potassium was deficient on fall rangeland. Deficient trace minerals for both pasture types were Cu, Se, and Zn. Cobalt was deficient on both types of summer pasture. Antagonistic minerals were Mo and Fe. Forage macromineral concentrations declined (P < 0.05) from summer to fall for P and K on irrigated pasture and for P, K, and S on rangeland. Iron increased (P < 0.0005) from summer to fall on both types of pasture. Clay loam soils had greater (P < 0.05) Fe and Co and less Se than did sandy loam soils. Forage sampling confirmed the importance of obtaining duplicate samples for laboratory analyses, especially for Se. Pairing a customized mineral mix to forage deficits is a plausible management option for beef cattle operations in Idaho.</div>","PeriodicalId":22841,"journal":{"name":"The Professional Animal Scientist","volume":"34 5","pages":"Pages 494-504"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15232/pas.2017-01715","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81843238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Effects of seasonal variation and winter supplementation of ground whole flaxseed on milk fatty acid composition of dairy cows in organic farms in the northeastern United States 季节变化和冬季添加磨碎的全亚麻籽对美国东北部有机农场奶牛乳脂肪酸组成的影响

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/pas.2018-01755

Aimee N. Hafla PAS , Kathy J. Soder PAS , André F. Brito , Richard Kersbergen , Fay Benson , Heather Darby , Melissa D. Rubano , S. Leanne Dillard , Jana Kraft , Simone F. Reis

{"title":"Effects of seasonal variation and winter supplementation of ground whole flaxseed on milk fatty acid composition of dairy cows in organic farms in the northeastern United States","authors":"Aimee N. Hafla PAS , Kathy J. Soder PAS , André F. Brito , Richard Kersbergen , Fay Benson , Heather Darby , Melissa D. Rubano , S. Leanne Dillard , Jana Kraft , Simone F. Reis","doi":"10.15232/pas.2018-01755","DOIUrl":"https://doi.org/10.15232/pas.2018-01755","url":null,"abstract":"<div>Fourteen organic dairy farms in the northeastern United States were used to evaluate (1) seasonal variation in bioactive milk fatty acid (FA) profile from 2012 to 2015 and (2) supplementation of ground whole flaxseed (GFLX) to maintain elevated concentrations of bioactive milk FA during the nongrazing season. During regular farm visits, milk, feed, and pasture samples were collected, and diet composition, milk yield, and milk composition were recorded. During winters of 2013 to 2014 and 2014 to 2015, 9 farms supplemented GFLX at 6% of diet DM to half of each herd (n = 238 cows per treatment). Milk samples were collected and pooled by treatment (GFLX or control). Data were analyzed using the MIXED procedure of SAS. A significant month × year interaction (P < 0.05) for n-3 FA showed an increase beginning in April of 2014 through the end of the study. The proportion of conjugated linoleic acid showed a seasonal pattern with greatest (P < 0.05) concentrations (1.32% of total milk FA) during the grazing season. Winter GFLX supplementation did not affect (P > 0.15) milk yield or concentrations of milk fat or protein; however, BCS tended (P = 0.08) to be greater for GFLX cows. Compared with the control diet, GFLX decreased (P < 0.05) total milk SFA by 3.1 percentage units and increased (P < 0.05) n-3 by 62% and total conjugated linoleic acid proportion by 9%. Although GFLX supplementation increased milk n-3, lesser effects on SFA and total conjugated linoleic acid proportions indicated that a greater level of winter supplementation is required to improve overall milk FA profile during the nongrazing season.</div>","PeriodicalId":22841,"journal":{"name":"The Professional Animal Scientist","volume":"34 5","pages":"Pages 397-409"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15232/pas.2018-01755","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91621119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effects of seasonal variation and winter supplementation of ground whole flaxseed on milk fatty acid composition of dairy cows in organic farms in the northeastern United States 季节变化和冬季添加磨碎的全亚麻籽对美国东北部有机农场奶牛乳脂肪酸组成的影响

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/PAS.2018-01755

A. Hafla, K. Soder, A. F. Brito, R. Kersbergen, F. Benson, H. Darby, M. Rubano, S. L. Dillard, J. Kraft, S. F. Reis

引用次数: 2

Performance of stocker cattle grazing bales in winter and supplemented with wheat-based dried distillers grains plus solubles or barley grain in western Canada 加拿大西部冬季放牧牛的生产性能，并补充以小麦为基础的干酒糟和可溶性或大麦谷物

The Professional Animal Scientist Pub Date : 2018-10-01 DOI: 10.15232/pas.2018-01723

H. A. (Bart) Lardner , K. Larson , D.A. Christensen , J.J. McKinnon , F. Añez-Osuna , D. Damiran , M. Simili da Silva , L.P. Clark

{"title":"Performance of stocker cattle grazing bales in winter and supplemented with wheat-based dried distillers grains plus solubles or barley grain in western Canada","authors":"H. A. (Bart) Lardner , K. Larson , D.A. Christensen , J.J. McKinnon , F. Añez-Osuna , D. Damiran , M. Simili da Silva , L.P. Clark","doi":"10.15232/pas.2018-01723","DOIUrl":"10.15232/pas.2018-01723","url":null,"abstract":"<div>Backgrounding calves during winter months in western Canada requires additional supplementation due to the cold climatic conditions. The objectives of this study were to determine the effects of supplementing either wheat dried distillers grains plus solubles (DDGS) or barley grain in an alternative backgrounding program on steer performance and DMI when winter bale grazing in a 2-yr study. Each year, 54 crossbred steers (BW, 219.5  <!-->5.3 kg) from a similar annual cohort were stratified by BW and randomly allocated to 1 of 3 replicated (n = 3) supplement treatments [3 kg/d of (1) 100% barley grain (BARL); (2) 100% wheat DDGS (WDDGS); or (3) 50% barley + 50% wheat DDGS (50:50)] during winter grazing of grass–legume bales [CP = 7.1, ADF = 44.6, TDN = 48.0 (% DM)]. Supplement strategy did not affect (P = 0.95) DMI of round bale hay. Crude protein intake was 25 and 67% greater (P = 0.01) for WDDGS steers compared with 50:50 and BARL steers, respectively. Total digestible nutrient intake was similar (P = 0.73; 6.4 kg/d) among supplement strategies. Steers fed WDDGS tended (P = 0.07) to have 5 and 11% greater ADG (0.97 kg/d), and 4 and 10% greater total gain (103 kg), than the 50:50 (99 kg) and BARL (94 kg) steers, respectively. The study results suggest a tendency for greater performance of beef steers supplemented with wheat DDGS compared with barley grain when managed in an extensive winter bale grazing system.</div>","PeriodicalId":22841,"journal":{"name":"The Professional Animal Scientist","volume":"34 5","pages":"Pages 460-468"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15232/pas.2018-01723","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82553446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0