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Effect of alpha-lipoic acid on relieving ammonia stress and hepatic proteomic analyses of broilers

文献类型： 外文期刊

作者： Lu, M. 1 ; Bai, J. 2 ; Xu, B. 2 ; Sun, Q. Y. 2 ; Wei, F. X. 2 ; Tang, X. F. 3 ; Zhang, H. F. 4 ; Li, J. 2 ; Wang, G. L. 2 ; Yin 1 ;

作者机构： 1.Henan Agr Univ, Coll Anim Sci & Vet Med, Zhengzhou 450002, Henan, Peoples R China

2.Henan Acad Agr Sci, Inst Anim Husb & Vet Sci, Zhengzhou 450002, Henan, Peoples R China

3.Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nutr, Beijing 100093, Peoples R China

4.Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nut

关键词： alpha-lipoic acid;ammonia stress;broiler;proteomics;production performance

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

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收录情况： SCI

摘要： Ammonia in poultry houses not only affects worker health but also induces a variety of poultry diseases. Alpha-lipoic acid (LA) is an effective antioxidant that protects cells against oxidative injury during various toxic and pathological processes. This study was designed to evaluate the mitigating effects of LA supplementation on ammonia stress and hepatic proteome changes in broilers. Male broilers (22 d old) were allocated to 3 groups: (1) a control group without ammonia stress (CTRL); (2) exposure to 70 ppm ammonia (AM); and (3) exposure to 70 ppm ammonia and dietary administration of 300 mg/kg LA (AM+LA). Ammonia exposure significantly decreased broiler growth performance and plasma glutathione peroxidase activity (P < 0.05), and increased plasma malondialdehyde content and glutamic-pyruvic transaminase activity (P < 0.05). These negative effects were eliminated by LA supplementation. Comparative proteomic analyses revealed 291 differentially expressed proteins in the AM group compared to the CTRL and AM+LA groups. A total of 30 proteins were differentially expressed between the AM/CTRL and (AM+LA)/AM groups. The addition of LA restored 24 of these proteins to control levels; these proteins were mainly related to transcription regulation, detoxification, protein translation and degradation, and immune and stress responses. The differentially expressed proteins included the high mobility group box (HMGB) and glutathione S-transferase (GST), which is closely related to immune response and oxidative stress, and collagens, which are implicated in liver injury. The addition of LA to broiler diet may reduce ammonia toxicity by maintaining the antioxidant system, xenobiotic metabolism, and metabolic pathways.

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