液态蛋氨酸羟基类似物(HMB)在奶牛生产中的应用研究进展  

The Application and Research Progress of Liquid Methionine in Dairy Cattle Production

作　　者：乔伟[1] 周安国[1] 王之盛[1] 

机构地区：[1]四川农业大学动物营养研究所,四川雅安625014

出　　处：《中国牛业科学》2007年第1期24-29,共6页China Cattle Science

摘　　要：液态蛋氨酸羟基类似物(HMB)是一种有效的反刍动物用活性蛋氨酸源,具有提高产奶量、改善乳成分、促进脂肪代谢和降低饲料成本等多种作用。本文对HMB在奶牛生产中的应用效果、HMB的作用机理、影响HMB作用的因素及HMB应用过程中存在的问题进行了论述,认为HMB是泌乳奶牛有效的蛋氨酸源,可在瘤胃和瓣胃上皮细胞及小肠吸收并转化为蛋氨酸被机体利用,添加HMB可降低日粮CP水平,减少N排泄量,有利于动物健康和环境保护。Liquid methionine, 2-Hydroxy- 4 - （Methylthio）Butanoic Acid （HMB）, is an excellent source of supplemental methionine of ruminant. The addition of HMB to the diet of diary cattle could improve milk production and milk quality, enhance lipid metabolism, and reduced the feed cost. The application result, reaction mechanism of HMB, factors influencing HMB utilization were discussed in the review, which suggested that as an efficient methionine sourcefor milking cows, HMB could be absorbed in the rumen, omasum epithelia and intestine and degraded into methionine utilized by cow, and the addition of HMB could decrease the diet crude protein level and nitrogen excretion to be beneficial to animal welfare and environment.

关 键 词：奶牛 液态蛋氨酸羟基类似物 蛋氨酸 产奶量 

分 类 号：S823[农业科学—畜牧学]