日粮铜水平对断奶至2月龄生长肉兔生产性能及血清指标的影响  

Effects of Dietary Copper Levels on Performance and Serum Indices of Weanling to 2-month-old Growing Meat Rabbits

作　　者：马德磊[1] 李福昌[1] 

机构地区：[1]山东农业大学动物科技学院,泰安271018

出　　处：《动物营养学报》2009年第4期493-498,共6页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家公益性行业(农业)科研专项(3-52);现代农业产业技术体系建设专项(nycytx-44)

摘　　要：本文旨在探讨日粮铜水平对断奶至2 月龄生长肉兔生产性能、血清指标的影响。选用新西兰断奶肉兔100只,随机分为5组,每组20个重复,每个重复1只兔。对照组饲喂基础日粮,试验组分别饲喂在基础日粮中以五水硫酸铜形式添加20、40、80和160 mg/kg铜的日粮,预试期7 d,正试期21 d。结果表明:日粮铜水平对生长肉兔平均日增重影响极显著(P=0.002 4),对料重比和平均日采食量无显著性影响(P>0.05);日粮铜水平对铜锌超氧化物歧化酶和血清铜蓝蛋白活性影响不显著(P>0.05),对血清总蛋白、球蛋白含量有显著影响(P=0.040 3,P=0.043 6),对白蛋白、白球比、尿素氮、总胆固醇含量无显著影响(P>0.05);日粮铜水平极显著影响血清胰岛素的含量(P=0.005 9),显著影响血清生长激素水平(P=0.024 8),对类胰岛素样生长因子-Ⅰ无显著影响(P>0.05)。综合本试验结果,断奶至2月龄生长肉兔铜适宜添加水平为40～80 mg/kg(日粮实际含量为50～90 mg/kg)。The experiment was conducted to study the effects of dietary copper levels on the production performance and serum indices of weanling to 2-month-old growing meat rabbits. One hundred New Zealand weanling rabbits were randomly divided into 5 groups with 20 replicates each and 1 rabbit in each replicate. Rabbits in the control group were fed basal diet and those in test groups were fed basal diet supplemented with 20, 40, 80 and 160 mg/kg copper （CuSO4 · 5H2O）, respectively. The trial lasted for 28 days, including preset period for 7 days and test period for 21 days. The results showed that, the copper levels in diet had significant effect on the average daily gain （P = 0. 002 4）, but no significant effect on the feed/gain ratio and average daily intake （P〈0. 05） ; the copper levels in diet had no significant effect on the activities of cuprozinc-superoxide dismutase and ceruloplasmin in serum （P〈0.05） ; the dietary copper levels could significantly increase the contents of total protein and globulin in serum（P = 0. 040 3, P = 0. 043 6）, while the albumin, albumin/globulin ratio, urea nitrogen and total cholesterol in serum were not significantly affected （P〈0.05）; the dietary copper levels had significant effect on insulin （P = 0. 005 9） and the growth hormone （P = 0. 024 8）, while no significant effect on the insulin-like growth factor- Ⅰ（P〈0.05）. In conclusion, the appropriate supplementation of copper in diet of weanling to 2-month-old New Zealand rabbits was 40-80 mg/kg （the actual content of copper in diet was 50-90 mg/kg）.

关 键 词：铜 生长肉兔 生产性能 血清指标 

分 类 号：S829.15[农业科学—畜牧学] Q959.468[农业科学—畜牧兽医]