Optimal dietary concentration of chromium for alleviating the effect of heat stress on growth, carcass qualities, and some serum metabolites of broiler chickens
Optimal dietary concentration of chromium for alleviating the effect of heat stress on growth, carcass qualities, and some serum metabolites of broiler chickens
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DOI：
10.1385/bter:89:1:53
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发表时间：
2002-10-01
影响因子：
3.9
通讯作者：
Cikim, G
中科院分区：
文献类型：
--
作者：
Sahin, K;Sahin, N;Cikim, G
本试验旨在研究不同水平（0、200、400、800和1200 p/kg）铬（吡啶甲酸铬，CrPic）对热应激（32.8 ℃）条件下生长的肉仔鸡（Ross）生产性能、胴体性状和血清代谢产物的影响。试验选用150只成年雄性肉仔鸡，随机分为5个处理组，3个重复，每个重复10只鸡。这些鸟被喂食对照饮食或补充有200、400、800或1200 μ g Cr/kg饮食的对照饮食。增加补充铬导致体重（p = 0.01，线性）、采食量（p小于或等于0.05，线性）和胴体特性（p = 0.05，线性）的增加以及饲料效率（p = 0.01，线性）的改善。增加补充铬降低血清皮质酮浓度（p = 0.01，线性），而它增加血清胰岛素和T-3和T-4浓度（p = 0.01）。血清葡萄糖和胆固醇浓度下降（p = 0.01），而蛋白质浓度线性增加（p = 0.001）与较高的饮食铬补充。本研究的结果表明，日粮中添加1200 ppb的铬可以减轻热应激对肉仔鸡的不利影响。
This study was conducted to determine the effects of chromium (chromium picolinate, CrPic) supplementation at various levels (0, 200, 400, 800, or 1200 p/kg of diet) on performance, carcass characteristics, and some serum metabolites of broiler chickens (Ross) reared under heat stress (32.8degreesC). One hundred fifty old male broilers were randomly assigned to 5 treatment groups, 3 replicates of 10 birds each. The birds were fed either a control diet or the control diet supplemented with either 200, 400, 800, or 1200 mug Cr/kg of diet. Increased supplemental chromium resulted in an increase in body weight (p = 0.01, linear), feed intake (p less than or equal to 0.05, linear), and carcass characteristics (p = 0.05, linear) and improved feed efficiency (p = 0.01, linear). Increased supplemental chromium decreased serum corticosterone concentration (p = 0.01, linear), whereas it increased serum insulin and T-3 and T-4 concentrations (p = 0.01). Serum glucose and cholesterol concentrations decreased (p = 0.01), whereas protein concentrations increased linearly (p = 0.001) with higher dietary chromium supplementation. Results of the present study conclude that a supplementation of diet with chromium at 1200 ppb can alleviate the detrimental effects of heat stress in broiler.