福建农林大学学报（自然科学版）2017，Vol.46Issue(1)：89-94,6.DOI:10.13323/j.cnki.j.fafu(nat.sci.).2017.01.014
蛋氨酸羟基类似物异丙酯对奶牛产奶性能和血清生化指标的影响
Effects of 2-hydroxy-4-( methylthio) butanoic acid isopropyl ester on production performance and serum parameters in dairy cows
摘要
Abstract
To evaluate effects of 2-hydroxy-4-( methylthio) butanoic acid isopropyl ester ( HMBi) on milk yield and composition and serum biochemical indicators of dairy cow, 24 Holstein cows were randomized into 2 groups, with the control fed with basal diet only and the treatment group fed with diet containing 20 g?d-1 HMBi ( 21 days before parturition ) and 30 g?d-1 HMBi ( 80 days after parturition) . The trial lasted from 21 days before parturition to 80 days after parturition. Results showed that milk yield from the treatment group increased by 6.83 kg?d-1( P>0.05) compared with the control. Milk protein content increased by 0.14% ( P<0.05) and somatic cell counts ( SCC) decreased ( P<0.01) . Fourteen days before parturition, globulin and urea nitrogen levels increased while immunoglobulin G (IgG) level decreased (P<0.05). Furthermore, total cholesterol level reduced from 14th day (P<0.01) and 70th day ( P<0.05) after parturition. To summarize, HMBi addition improves milk yield and protein, serum globulin and urea nitrogen while decreases milk SCC and serum IgG.关键词
奶牛/蛋氨酸羟基类似物异丙酯(HMBi)/围产期/生产性能/血清生化指标Key words
dairy cows/2-hydroxy-4-(methylthio) butanoic acid isopropyl ester (HMBi)/perinatal period/production perform-ance/serum biochemical indicators分类
农业科技引用本文复制引用
杨保奎,热合木塔依,奚雨萌,杨榛,吴凡,李玉丹,韩兆玉..蛋氨酸羟基类似物异丙酯对奶牛产奶性能和血清生化指标的影响[J].福建农林大学学报（自然科学版）,2017,46(1):89-94,6.基金项目
"十二五"国家科技计划项目(2012BAD12B10). （2012BAD12B10）
