Molecular Nutrition

Effects of Tea Polyphenol on Growth Performance, Antioxidant Capacity, Carcass Performance and Meat Quality of Finishing Pigs

  • CHAO Yamei ,
  • CHEN Daiwen ,
  • YU Bing ,
  • HE Jun ,
  • YU Jie ,
  • MAO Xiangbing ,
  • LUO Yuheng ,
  • HUANG Zhiqing ,
  • LUO Junqiu ,
  • WANG Shaohui ,
  • LUO Chenggui ,
  • ZHENG Ping
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  • 1. Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an 625014, China;
    2. Shuxing Feed Company Limited of Chengdu, Chengdu 610043, China

Received date: 2016-06-02

  Online published: 2016-12-17

Abstract

This experiment was to study the effects of tea polyphenol on growth performance, antioxidant capacity, carcass performance and meat quality of finishing pigs, and discuss its application effects. Sixty (74.19±7.41) kg finishing pigs were divided into 2 groups with 6 replicates per group and 5 pigs per replicate. Pigs in control group were fed a basal diet, while pigs in tea polyphenol group were fed the basal diet supplemented with 400 mg/kg tea polyphenol. The experiment lasted for 6 weeks. The results showed as follows:1) compared with the control group, tea polyphenol group significantly improved weight gain and average daily gain of pigs(P<0.05). 2) Compared with the control group, tea polyphenol group significantly reduced the activity of glutathion peroxidase (GSH-Px) in serum (P=0.05), significantly increased the activity of GSH-Px (P<0.01) and total antioxidant capacity (T-AOC) (P=0.05) in liver, and decreased the malondialdehyde (MDA) content by 26.24% (P=0.09)in liver of finishing pigs. Adding tea polyphenol additive could significantly decrease the expression of GSH-Px, catalase (CAT) and quinone oxidoreductase 1 (NQO1) in liver of finishing pigs (P≤0.05). 3) Compared with the control group, supplementation with tea polyphenol had no effects on carcass performance and meat quality (P>0.05). The pH after slaughter for 24 h and brightness (L*) value after slaughter for 45 min of pig muscle in tea polyphenol group were increased by 1.65% (P=0.09) and 3.74% (P=0.10), while L* value after slaughter for 24 h was decreased by 4.26% (P=0.10) compared with the control group. In conclusion, under the condition of this test, supplementation with 400 mg/kg tea polyphenol in the diet can significantly improve weight gain and average daily gain, reduce the activity of GSH-Px in serum, but increase the activity of GSH-Px and T-AOC in liver of finishing pigs. However, supplementation with tea polyphenol has no significantly effects on carcass performance and meat quality of finishing pigs.

Cite this article

CHAO Yamei , CHEN Daiwen , YU Bing , HE Jun , YU Jie , MAO Xiangbing , LUO Yuheng , HUANG Zhiqing , LUO Junqiu , WANG Shaohui , LUO Chenggui , ZHENG Ping . Effects of Tea Polyphenol on Growth Performance, Antioxidant Capacity, Carcass Performance and Meat Quality of Finishing Pigs[J]. Chinese Journal of Animal Nutrition, 2016 , 28(12) : 3996 -4005 . DOI: 10.3969/j.issn.1006-267x.2016.12.034

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