Journal of Integrative Agriculture ›› 2021, Vol. 20 ›› Issue (1): 227-235.DOI: 10.1016/S2095-3119(20)63432-3

所属专题: 动物营养合辑Animal Nutrition

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  • 收稿日期:2019-12-10 出版日期:2021-01-01 发布日期:2020-12-13

Effects of selenium source and level on growth performance, antioxidative ability and meat quality of broilers

WANG Chuan-long1*, XING Guan-zhong1, 3*, WANG Li-sai3, LI Su-fen3, ZHANG Li-yang1, LU Lin1, LUO Xu-gang2, LIAO Xiu-dong1 
  

  1. 1 Mineral Nutrition Research Division, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China
    2 Poultry Mineral Nutrition Laboratory, College of Animal Science and Technology, Yangzhou University, Yangzhou 225000, P.R.China
    3 Department of Animal Science, Hebei Normal University of Science and Technology, Qinhuangdao 066004, P.R.China
  • Received:2019-12-10 Online:2021-01-01 Published:2020-12-13
  • Contact: Correspondence LUO Xu-gang, E-mail: wlysz@263.net; LIAO Xiu-dong, E-mail: liaoxd56@163.com
  • About author: WANG Chuan-long, E-mail: 2531609960@qq.com; * These authors contributed equally to this study.
  • Supported by:
    This research was financially supported by the National Natural Science Foundation of China (31601956), the Agricultural Science and Technology Innovation Program, China (ASTIP-IAS09), and the earmarked fund for the China Agriculture Research System (CARS-41), the earmarked fund for Hebei Chicken Innovation Team of Modern Agro-industry Technology Research System, China (HBCT2018150203 and HBCT2018150206).

摘要:

本试验研究了不同硒源和硒水平对肉鸡生长性能、胴体性能、抗氧化性能及肉品质的影响。试验采用2×2+1两因子完全随机试验设计,将320只1日龄AA商品肉仔鸡按体重随机分为5个处理组,添加的2种硒源分别为亚硒酸钠和酵母硒,2个硒添加水平分别为0.20和0.40 mg/kg,4个处理组共用一个不加硒的对照组。试验期为42天。研究结果表明,与对照组相比,添加硒可显著降低肉仔鸡前后期耗料/增重比、后期死亡率和42日龄肉仔鸡腿肌中丙二醛含量,显著提高肉仔鸡后期平均日增重和日采食量、42日龄肉仔鸡全净膛率和腹脂率、胸肌和腿肌中硒含量和谷胱甘肽过氧化物酶(GSH-Px)活性。酵母硒形态有机硒在提高腿肌pH值及降低剪切力方面的效果显著优于亚硒酸钠形态无机硒。此外,添加0.4 mg/kg硒对降低腿肌剪切力及提高胸肌和腿肌GSH-Px活性的效果明显优于添加0.2 mg/kg硒。当硒添加水平由0.2提高到0.4 mg/kg时,亚硒酸钠形态无机硒不能增加胸肌和腿肌中硒含量,而酵母硒形态有机硒则显著提高了胸肌和腿肌中硒含量。综上所述,在肉仔鸡饲粮中添加硒可以提高肉鸡生产性能,抗氧化能力和肌肉硒含量;相比于亚硒酸钠形态无机硒,酵母硒形态有机硒在提高肉鸡肉品质方面效果更佳。


Abstract: This experiment was conducted to investigate the effects of selenium (Se) source and level on growth performance, carcass traits, antioxidative ability and meat quality of broilers.  A total of 320 one-d-old Arbor Acres commercial broilers were randomly assigned to 1 of 5 treatments with 8 replicates in a completely randomized design involving a 2×2 factorial arrangement of treatments plus one Se-unsupplemented basal diet control for 42 d.  The two Se sources were sodium selenite and Se yeast, and the two supplemental Se levels were 0.20 and 0.40 mg Se kg–1.  The results showed that broilers fed the Se-supplemented diets had higher (P<0.05) average daily gain and average daily feed intake from 22 to 42 d of age, eviscerated yield and abdominal fat percentages, Se concentrations and glutathione peroxidase (GSH-Px) activities in breast and thigh muscles on d 42, and lower (P<0.05) feed/gain from 1 to 21 and 22 to 42 d of age, mortality from 22 to 42 d of age and malondialdehyde (MDA) concentration in thigh muscle on d 42 than those fed the control diet.  Broilers fed the diets supplemented with Se yeast had higher (P<0.05) pH value and lower (P<0.05) shear force in thigh muscle than those fed the diets supplemented with sodium selenite.  Additionally, broilers fed the diets supplemented with 0.40 mg Se kg–1 had lower (P<0.05) shear force in thigh muscle and higher (P<0.05) GSH-Px activities in breast and thigh muscles than those fed the diets supplemented with 0.20 mg Se kg–1.  Furthermore, broilers fed the diet supplemented with Se yeast at 0.40 mg Se kg–1 had higher (P<0.05) Se concentrations in breast and thigh muscles than those fed the diet supplemented with Se yeast at 0.20 mg Se kg–1, but no differences (P<0.05) were observed in these indices of broilers fed the diets supplemented with sodium selenite between 0.20 and 0.40 mg Se kg–1.  The results from the present study indicated that supplemental Se could increase the growth performance, muscle Se concentration and antioxidative ability of broilers; and the Se from Se yeast was more effective than the Se from sodium selenite in improving meat quality of broilers.

Key words: selenium source ,  growth performance ,  meat quality ,  antioxidative ability ,  broiler