日粮中添加丙烯酸对绵羊消化代谢的影响  

Effect of supplemental acrylate to diet on digestion and metabolism of sheep

作　　者：王磊[1] 刘志强[1] 杨菊清 窦来义 杨开伦[1] 

机构地区：[1]新疆农业大学动物营养实验室,新疆乌鲁木齐830052 [2]新疆美利奴细毛羊科技发展有限公司,新疆伊犁835000

出　　处：《草业学报》2010年第3期148-154,共7页Acta Prataculturae Sinica

基　　金：国家自然科学基金项目(30871810)资助

摘　　要：选取25只身体健康,体重32kg左右的8月龄中国美利奴(新疆型)细毛公羊,日粮精粗比为25:75,采用分组试验设计,分别是对照组、添喂丙酸8,12mmol/(d.只)组和添喂丙烯酸8,12mmol/(d.只)组,研究丙烯酸对绵羊消化代谢和体增重的影响。结果表明,与对照组和添喂丙酸组相比,添喂丙烯酸组绵羊干物质采食量没有显著差异(P>0.05);添喂丙烯酸组与对照组相比,半纤维素消化率提高5.15%～9.70%,纤维素消化率提高3.64%～5.73%,但差异不显著(P>0.05);8mmol丙烯酸组钙、磷的消化率分别高于8mmol丙酸组2.86%和8.39%,但差异不显著(P>0.05);添喂8,12mmol/(d.只)丙烯酸组绵羊的尿氮排出量(g/d)分别低于对照组12%和18%,而N保留率与对照组相比分别提高5.35%和3.91%,但均没有显著差异(P>0.05)。添喂丙烯酸组绵羊的体增重和饲料利用率与对照组和丙酸组相比没有显著差异(P>0.05)。本研究表明,添喂丙烯酸对绵羊的采食量、干物质、有机物、粗蛋白、纤维素、半纤维素的消化量(率)均无显著影响(P>0.05),对绵羊氮、钙、磷的代谢无显著影响(P>0.05)。The effect of acrylate supplementation on the digestion,metabolism and body weight gain of sheep was investigated.Twenty-five healthy male China Merino sheep （Xinjiang type） with an average body weight of 32 kg were fed on a diet consisting of 25% concentrate and 75% forage.The sheep were divided into five groups：a control group,propionic groups （feed supplemented with 8 or 12 mmol propionic/d·sheep） and acrylate groups （feed supplemented with 8 or 12 mmol acrylate/d·sheep）.There was no obvious effect of acrylate supplementation on （DMI） compared with the control and propionic groups.The addition of acrylate led to an increase （P0.05） in hemicellulose digestibility by 5.15%-9.70% and cellulose digestibility by 3.64%-5.73% （P0.05）.The digestibility of calcium and phosphorus in the group fed 8 mmol acrylate was greater by 2.86% and 8.39% respectively （P0.05） than that in the group fed 8 mmol propionic.Addition of acrylate at 8 and 12 mmol/d·sheep reduced urea nitrogen excretion by 12% and 18% （P0.05） respectively,but elevated nitrogen retention rates by 5.35% and 3.91% （P0.05）.There was no obvious effect of addition of acrylate on body weight gain and feed efficiency compared with the control and propionic groups.It is suggested that acrylate supplementation did not significantly affect sheep DMI and digestibility of DM,CP,OM,hemicellulose,cellulose,and the metabolism of nitrogen compared with the controls.

关 键 词：丙烯酸 绵羊 消化 代谢 体增重 

分 类 号：S826[农业科学—畜牧学] S816.32[农业科学—畜牧兽医]