Effect of a Large-sized Cage with a Low Metabolizable Energy and Low Crude Protein Diet on Growth Performance, Feed Cost, and Blood Parameters of Growing Layers

文献类型： 外文期刊

第一作者： Wan, Yi

作者： Wan, Yi;Ma, Ruiyu;Li, Yan;Liu, Wei;Li, Junying;Zhan, Kai

作者机构：

关键词： blood parameter; growth performance; immune response; large cage; layer

期刊名称：JOURNAL OF POULTRY SCIENCE （ 影响因子：1.425； 五年影响因子：1.25 ）

ISSN： 1346-7395

年卷期： 2021 年 58 卷 1 期

页码：

收录情况： SCI

摘要： Effects of a large-sized cage with a low metabolizable energy and low crude protein (LME-LCP) diet on growth performance, feed cost, blood biochemistry, and antibody response of growing layers were evaluated. A total of 668 one-day-old female Gushi chicks were randomly allocated into three different cages, namely, large, medium, and small cages, referred to as Group A, Group B, and Group C, respectively, and fed LME-LCP diets. A fourth group of birds raised in small cages and fed a standard diet (STD) was designated Group D i.e. the control. Equal stocking densities were maintained among the four groups throughout the experiment, from 50-20 birds/m(2). Large cages with LME-LCP diet (Group A) increased the shank length and girth as chicks grew, improved the activities of serum creatine kinase, and reduced serum triglyceride and cholesterol concentrations. The total feed intake in birds from Group A was higher than those from the other groups at every stage. The total cost (rmb/bird) of feed was 6.70% lower in Group A than that in Group D, which indicated the cost-effectiveness of large cages. In conclusion, large cages with LME-LCP diets have positive effects on body weight, shank growth, and serum biochemical indices of growing Gushi chicks, and can reduce feed costs.

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