Effect of stocking density and alpha-lipoic acid on the growth performance, physiological and oxidative stress and immune response of broilers
Effect of stocking density and alpha-lipoic acid on the growth performance, physiological and oxidative stress and immune response of broilers
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DOI：
10.5713/ajas.18.0939
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发表时间：
2019-12-01
期刊：
影响因子：
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通讯作者：
Li, Shaoyu
中科院分区：
文献类型：
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作者：
Li, Wenjia;Wei, Fengxian;Li, Shaoyu
目的：本试验旨在研究不同饲养密度和不同添加剂对肉仔鸡生长性能、饲料利用率、胴体品质、抗氧化能力和免疫功能的影响。共1、22日龄雄性肉鸡530只（Arbor Acres），体重相当（731.92 +/- 5.26）放入18个笼中（2.46x2.02 m），每组75只（15只鸟/平方米（2），37.5公斤/平方米（2）;低放养密度[LD]），90只鸟（18只鸡/m2，45.0 kg/m2;高饲养密度[HD]）和90只鸡在基础日粮中添加300 mg/kg ALA（18只鸟/m2，45.0 kg/m2; HD+ALA，高饲养密度+ α-硫辛酸）;每个处理由6个重复代表。结果：高密度饲养使肉鸭的生长、饲料转化率、胴体重、产腿率和法氏囊重相对体重下降（P
Objective: The study was conducted to evaluate the effect of stocking density and alphalipoic acid (ALA) on the growth performance, feed utilization, carcass traits, antioxidative ability and immune response of broilers.Methods: A total of 1,530 22-day-old male broilers (Arbor Acres) with comparable body weights (731.92 +/- 5.26) were placed into 18 cages (2.46x2.02 m) in groups of 75 birds (15 birds/m(2), 37.5 kg/m(2); low stocking density [LD]), 90 birds (18 birds/m(2), 45.0 kg/m(2); high stocking density [HD]) and 90 birds with 300 mg/kg ALA added to the basal diet (18 birds/m(2), 45.0 kg/m(2); HD+ALA, high stocking density+alpha-lipoic acid); each treatment was represented by 6 replicates. The experimental period was 3 weeks.Results: The results showed that the high stocking density regimen resulted in a decreased growth, feed conversion ratio, carcass weight, thigh yield and bursa weight relative to body weight (p