添加N-乙酰-DL-蛋氨酸对绵羊消化代谢的影响  

Effects of Supplemental N-Acetyl-DL-Methionine on Digestion and Metabolism of Sheep

作　　者：姜庆军[1] 杨开伦[1] 张俊瑜[1] 王彩霞[1] 王梦霖[1] 

机构地区：[1]新疆农业大学动物营养实验室,乌鲁木齐830052

出　　处：《中国畜牧兽医》2008年第11期10-13,共4页China Animal Husbandry & Veterinary Medicine

基　　金：国家自然科学基金项目(30471262);新疆维吾尔自治区高校科学研究计划项目(JEDU2005E04)

摘　　要：本试验选取4只体重约40 kg的中国美利奴(新疆型)细毛羊,采用分期试验设计,在第一期试验中每天每只添喂蛋氨酸2.35 g(对照组),第二期试验中每天每只添喂N-乙酰-DL-蛋氨酸3.06 g(试验组),以研究添加N-乙酰-DL-蛋氨酸对绵羊消化代谢的影响。结果表明,添加蛋氨酸组和添加N-乙酰-DL-蛋氨酸组的纤维素消化率分别为50.64%±6.46%,61.98%±5.44%,半纤维素消化率分别48.92%±1.69%,54.96%±3.95%,钙的表观消化率分别为15.12%±1.07%,18.27%±2.04%,两者间均差异显著(P<0.05)。因此,添加N-乙酰-DL-蛋氨酸,可以提高绵羊对日粮中纤维素和半纤维素的消化率,提高钙的保留量、保留率。Four male China merino （Xinjiang type） sheep of 40 kg live weight were used to investigate effects of supplementation N-Acetyl-DL-Methionine on digestion and metabolism of sheep in two periods. Sheep were supplied with 2.35 g methionine per day in the first period and with 3.06 g N-Acetyl-DL-Methionine per day in the second period. The results indicated that digestibility of cellulose in control and treatment were 50.64 %±6.46 % and 61.98 % ±5.44 % （P〈0.05）, the digestibility of hemicellulose were 48.92 % ± 1.69 % and 54.96 ±3.95 % （P〈0.05）, the apparent digestibility of calcium were 15.12 % ± 1.07% and 18.27% ±2.04 % （P〈0. 05）. It concluded that the digestibility of cellulose and hemieellulose were improved by supplementation with N-Acetyl-DL-Methionine. The amount and rate of retention of calcium were also improved by the supplementation.

关 键 词：N-乙酰-DL-蛋氨酸 绵羊 消化代谢 

分 类 号：S816.7[农业科学—饲料科学]