Effect of epigallocatechin gallate on growth performance and serum biochemical metabolites in heat-stressed broilers

文献类型： 外文期刊

第一作者： Luo, Jingxian

作者： Luo, Jingxian;Liu, Longzhou;Xue, Bo;Tian, Guangming;Yang, Ye;Song, Jiao

作者机构：

关键词： broiler;heat stress;epigallocatechin gallate;growth performance;serum biochemical metabolite

期刊名称：POULTRY SCIENCE （ 影响因子：3.352； 五年影响因子：3.679 ）

ISSN： 0032-5791

年卷期： 2018 年 97 卷 2 期

页码：

收录情况： SCI

摘要： This study aims to investigate the effects of epigallocatechin gallate (EGCG) on the growth performance and serum metabolic characteristics of heat-stressed broilers. A total of 192 14-day-old Arbor Acres broilers were divided into 4 groups with 6 replicates per group (8 chickens/cage). Thermoneutral group (Group TN) was fed the basal diet and maintained at 28 degrees C for 24 h/d. The heat-stressed groups were housed at 35 degrees C for 12 h/d and 28 degrees C for 12 h/d and fed the basal diet supplemented with EGCG at 0, 300, and 600 mg/kg diet (Groups HS0, HS300, and HS600, respectively). The production performance and serum metabolic characteristics were analyzed at d 21, 28, and 35, respectively. At d 35 of age, heat stress reduced (P < 0.05) the body weight (BW), feed intake (FI) and the contents of serum total protein (TP) and glucose (GLU); inhibited (P < 0.05) alkaline phosphatase (ALP) activity; But increased (P < 0.05) the contents of uric acid (UA), cholesterol (CHOL), triglyceride (TG), and the activities of creatine kinase (CK), lactate dehydrogenase (LDH), aspartate aminotransferase (AST). Heat-stressed chickens fed EGCG exhibited a linear increase (P < 0.05) in BW, FI, the levels of serum TP, GLU, and ALP activity; and linear decrease (P < 0.05) in the contents of serum UA, CHOL, and TG, as well as the activities of LDH, CK, and AST. Heat stress also reduced (P < 0.05) the activities of serum glutathione peroxidase (GSH-Px), superoxide dismutase (SOD) and catalase (CAT) on d 35 and increased (P < 0.05) the GSH-Px and SOD activity on d 21 and malondialdehyde (MDA) contents. There was a linear increase (P < 0.05) in activities of GSH-Px, SOD and CAT at 35 d of age, and linear decreased (P < 0.05) in MDA contents. In conclusion, EGCG can improve the growth performance of broilers by enhancing antioxidant property and alleviating oxidant damage caused by heat stress.

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