Journal of Integrative Agriculture ›› 2016, Vol. 15 ›› Issue (11): 2578-2587.DOI: 10.1016/S2095-3119(16)61404-1

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  • 收稿日期:2015-11-09 出版日期:2016-11-04 发布日期:2016-11-04

Regulatory effects of dietary L-Arg supplementation on the innate immunity and antioxidant ability in broiler chickens

HU Ya-di, TAN Jian-zhuang, QI Ji, ZHANG Hong-fu   

  1. State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
  • Received:2015-11-09 Online:2016-11-04 Published:2016-11-04
  • Contact: ZHANG Hong-fu, Tel: +86-10-62818910, E-mail: zhanghf6565@vip.sina.com
  • About author:HU Ya-di, E-mail: huyadi529@163.com;
  • Supported by:

    This study was supported by the National Key Technology R&D Program of China (2012BAD39B01) and the Agricultural Science and Technology Innovation Program of CAAS (ASTIP-IAS07) in China.

Abstract:     Here, we investigated the effect of dietary arginine (Arg) supplementation on innate immunity and the antioxidant ability of broiler chickens. The experiment was designed as a single-factorial arrangement (n=8 cages/treatment, six birds/cage), and we used four dietary Arg concentrations (10.0, 15.0, 20.0 or 25.0 g kg–1). On day 21, the birds were killed to obtain spleen, cecal tonsil and liver samples to determine the gene expression and antioxidant characteristics. Increasing the Arg concentration linearly decreased (P<0.05) the mRNA expression of splenic interleukin-18 (IL-18) and tumor necrosis factor-α (TNF-α). Dietary Arg supplementation quadratically decreased (P<0.05) the expression of interleukin-1b (IL-1b) and interferon-γ (IFN-γ) mRNA in the spleen. Increasing Arg concentrations linearly and quadratically reduced the expression of IL-18 mRNA in the spleen. Meanwhile, increasing dietary Arg supplementation linearly and quadratically increased the lymphotactin mRNA (P<0.05) expression, and linearly increased the macrophage inflammatory protein-1β (MIP-1β) and toll-like receptor 15 (TLR15) mRNA expression in the cecal tonsils. Dietary Arg supplementation linearly (P<0.05) increased the glutathione peroxidase (GSH-Px), catalase (CAT), and lysozyme (LZM) activities in the liver. However, the malondialdehyde (MDA) activity in the liver was not influenced by the dietary Arg concentration (P>0.05). No significant (P>0.05) effect was found on the activity of superoxide dismutase (SOD) in the liver. Thus high levels of Arg supplementation (>20.0 g kg–1) may potentially suppress the innate immunity of broiler chickens, and dietary Arg supplementation enhances the antioxidant activity in broiler chickens.

Key words: arginine ,  innate immunity ,  antioxidant ability ,  broiler