日粮不同蛋白质和赖氨酸水平对育肥期伊拉兔生长性能、血清生化指标及免疫的影响  

Effect of different dietary protein and lysine levels on growth performance,serum biochemical indexes and immunity of IRA rabbits during fattening period

作　　者：李燕舞 肖锋 温华梅 王君荣 姜八一 李在伟 LI Yan-wu;XIAO Feng;WEN Hua-mei;WANG Jun-rong;JIANG Ba-yi;LI Zai-wei

机构地区：[1]山东畜牧兽医职业学院,山东潍坊261061 [2]临沂康大家园食品有限公司,山东临沂276302

出　　处：《饲料研究》2021年第18期62-66,共5页Feed Research

基　　金：山东省现代农业产业技术体系特种经济动物创新团队营养与饲料岗位(项目编号:DAIT-21-03);2020年度山东省重点扶持区域引进急需人才项目“沂蒙肉兔优质高产品系培育与推广”。

摘　　要：试验研究日粮中蛋白质和赖氨酸含量对育肥期伊拉肉兔生长性能和免疫机能的影响。选择216只健康状况良好、体重(1.843±0.173)kg的伊拉肉兔,随机分为9组,每组6个重复,每个重复4只肉兔。试验设置3组蛋白质(14.00%、16.00%、18.00%)水平、3组赖氨酸(0.65%、0.85%、1.05%)水平,试验期35 d。结果显示,日粮蛋白质含量为16.00%、赖氨酸含量为1.05%时,肉兔的平均日增重最高,蛋白质、脂肪的利用率高,肝脏转化能力强;肉兔血清的免疫球蛋白M(IgM)和免疫球蛋白A(IgA)含量最高,脾脏和胸腺指数最高。日粮蛋白质含量为14.00%、赖氨酸含量为1.05%时,肉兔料重比最低(P<0.05)。研究表明,拉肉兔育肥期饲粮中最适宜的蛋白质、赖氨酸含量分别为16.00%、1.05%。The experiment studied the effect of dietary protein and lysine content on growth performance and immune function of Iran rabbits during fattening period.216 healthy Iran rabbits with body weight(1.843±0.173)kg were divided into nine groups with six replicates in each group and four rabbits in each replicate.The experiment set three groups of protein(14.00%,16.00%,18.00%)levels,three groups of lysine(0.65%,0.85%,1.05%)levels,the experiment lasted for35 d.The results showed that when the dietary protein content was 16.00%and the lysine content was 1.05%,the average daily gain of meat rabbits was the highest,and had high utilization rate of protein and fat and strong liver transformation ability.The serum IgM and IgA content of meat rabbits were the highest,and the spleen index and thymus index were the highest.When the dietary protein content was 14.00%and the lysine content was 1.05%,the feed to gain ratio of meat rabbits was the lowest.The experiment indicates that 16.00%and 1.05%of protein and lysine content in diet are the most suitable for meat pulling rabbits during fattening period.

关 键 词：蛋白质水平 赖氨酸水平 肉兔 生长性能 血清生化指标 免疫 

分 类 号：S829.1[农业科学—畜牧学]