不同增钙模式对蛋鸡生产性能、胫骨质量和血清生化指标的影响
发布时间:2018-01-11 17:15
本文关键词:不同增钙模式对蛋鸡生产性能、胫骨质量和血清生化指标的影响 出处:《动物营养学报》2016年04期 论文类型:期刊论文
【摘要】:本试验旨在研究不同增钙模式对蛋鸡生产性能、胫骨质量以及血清相关生化指标的影响,以确定蛋鸡生产过程中饲粮钙的增加模式以及钙的添加量。选取18周龄海兰灰商品蛋鸡480只,随机分为4组,每组4个重复,每个重复30只。增钙时间点分别为18周龄以及产蛋率为5%、50%和90%时,各时间点增钙方式分别为:Ⅰ组2.00%、2.20%、2.40%和3.75%;Ⅱ组2.00%、2.50%、3.00%和3.75%;Ⅲ组2.00%、3.00%、3.75%和3.75%;Ⅳ组2.00%、3.75%、3.75%和3.75%。试验期9周。结果表明:1)Ⅲ组蛋鸡产蛋率显著高于Ⅰ组和Ⅳ组(P0.05),各组间平均日产蛋重差异不显著(P0.05);2)Ⅲ组胫骨强度、胫骨重、胫骨钙含量显著高于Ⅰ组和Ⅱ组(P0.05),与Ⅳ组差异不显著(P0.05);3)蛋鸡产蛋率达50%时,Ⅰ组和Ⅱ组血钙含量显著高于Ⅲ组和Ⅳ组(P0.05);产蛋率达90%时,Ⅳ组血钙含量显著高于Ⅰ组和Ⅱ组(P0.05),Ⅲ组与Ⅳ组差异不显著(P0.05)。结果提示:当蛋鸡产蛋率达5%、50%和90%时,饲粮钙水平分别为3.00%、3.75%和3.75%有助于提高蛋鸡产蛋率,改善体况和稳定骨骼质量,同时不造成钙源浪费。
[Abstract]:The purpose of this study was to study the effects of different calcium increasing models on the performance, tibia quality and serum biochemical indexes of laying hens. In order to determine the increasing pattern of dietary calcium and the amount of calcium added during the production of laying hens 480 Hailan grey commercial laying hens aged 18 weeks were randomly divided into 4 groups with 4 repeats in each group. The calcium increasing time point was 18 weeks old and the egg laying rate was 50% and 90% respectively. The calcium increasing pattern at each time point was: group 鈪,
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