瘤胃投注N-乙酰-DL-蛋氨酸对新疆美利奴羯羊表观消失率及瘤胃液稀释率的影响  

The Effects of N-Acetyl-DL-Methionine on Its Apparent Disappearance Rate and Rumen Liquid Dilution Rate of Xinjiang Merino Wether by Rumial Infusion

作　　者：武安泉[1] 杨开伦[2] 

机构地区：[1]周口师范学院生命科学系,河南周口466001 [2]新疆农业大学动物营养实验室,乌鲁木齐830052

出　　处：《湖北农业科学》2013年第11期2588-2590,共3页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(30471262)

摘　　要：选取4只体重约40 kg装置永久性瘤胃瘘管和十二指肠瘘管的新疆美利奴羯羊为试验动物,采用4×4拉丁方设计,每只羊经瘤胃瘘管分别投注N-乙酰-DL-蛋氨酸(NAM)0、4、6、8 g/d,研究NAM在瘤胃内的稳定性以及对瘤胃液稀释率的影响。结果表明,添加6～8 g/d NAM可显著降低瘤胃液稀释率,瘤胃投注后12 h和24 h在前胃的平均消失率分别为67.0%～73.8%和82.1%～86.5%。以上结果表明NAM在瘤胃内不稳定,或者被前胃吸收。Four 40 kg mature Xinjiang Merino wethers which fitted with rumen fistula and duodenum fistula were administered with graded levels of N-Acetyl-DL-Methionine(NAM)[(0,4,6,8 g/(d.sheep)],respectively,to study the effect of NAM on the rumen liquid dilution rate,and its stability in rumen.The 4×4 Latin square design was adopted.The results showed that the rumen liquid dilution rate was decreased significantly when administered 6-8 g/(d.sheep)NAM,the disappearance rate of NAM in rumen was 67.0% -73.8% and 82.1% -86.5% after administering 12 hours and 24 hours,respectively.It indicated that NAM was not stable in rumen or it might be absorbed through forestomach.

关 键 词：前胃 N-乙酰-DL-蛋氨酸 表现消失率 瘤胃液稀释率 新疆美利奴羯羊 

分 类 号：S[农业科学]