5～8周龄京红1号蛋鸡饲粮赖氨酸需要量

发布时间：2018-04-09 10:16

  本文选题：赖氨酸　切入点：京红号　出处：《动物营养学报》2017年04期

【摘要】：本试验旨在研究5~8周龄京红1号蛋鸡饲粮赖氨酸(Lys)的需要量。选取4周龄末京红1号蛋鸡母雏360只,随机分为5组,每组6个重复,每个重复12只鸡。饲粮Lys水平分别为0.70%、0.84%、0.98%、1.12%和1.26%,试验期4周。结果表明:0.84%Lys组蛋鸡平均日增重、8周龄体重和群体均匀度均显著高于1.26%Lys组(P0.05)。0.98%和1.12%Lys组的体格发育显著优于1.26%Lys组(P0.05)。0.98%和1.12%Lys组的十二指肠重、空肠长显著高于0.70%和1.26%Lys组(P0.05)。0.84%Lys组胸腺指数显著高于0.98%、1.12%和1.26%Lys组(P0.05);0.84%、0.98%和1.12%Lys组法氏囊指数显著高于其他组(P0.05)。0.84%、0.98%和1.12%Lys组血清总蛋白和白蛋白含量显著高于0.70%和1.26%Lys组(P0.05);0.98%Lys组血清尿素氮和尿酸含量显著低于1.26%Lys组(P0.05);0.84%Lys组血清碱性磷酸酶活性和血浆生长激素含量均显著高于0.70%Lys组(P0.05)。根据8周龄鸡体重、群体均匀度、全净膛重、屠体重、心脏指数、肝脏指数、胫长、十二指肠重及血清尿酸含量等指标,各自拟合二次曲线,得出最佳饲粮Lys水平分别为0.906%、0.888%、0.931%、0.928%、0.889%、0.902%、0.902%、1.071%和0.958%。综上,推荐5~8周龄京红1号蛋鸡饲粮Lys需要量为0.93%。
[Abstract]:The purpose of this study was to study the dietary lysine Lys1 requirement of 5 ~ 8 weeks old Jinghong 1 laying hens.360 female chicks of Jinghong No. 1 layer at the end of 4 weeks old were randomly divided into 5 groups with 6 replicates in each group and 12 chickens in each replica.The dietary Lys levels were 0.70% 0.84% and 1.26%, respectively. The experiment period was 4 weeks.The content of nitrogen and uric acid was significantly lower than that of 1.26%Lys group (P 0.05) and plasma growth hormone (GH) content was significantly higher than that of 0.70%Lys group (P 0.05).In conclusion, the recommended dietary Lys requirement of 5 ~ 8 weeks old Jinghong No. 1 laying hens was 0.93kW.
【作者单位】： 中国农业科学院饲料研究所农业部饲料生物技术重点开放实验室生物饲料开发国家工程研究中心;
【基金】：基金项目:现代农业产业技术体系(CARS-41-K13) 家禽产业技术体系北京市创新团队(CARS-PSTP)
【分类号】：S831.5
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本文编号：1725998