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饲养密度对黄羽肉鸡生产性能、免疫器官指数和肉品质的影响

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  • 中国农业科学院家禽研究所, 扬州 225125
邵丹(1988-),女,江苏溧阳人,研究实习员,从事家禽营养与福利研究。E-mail:yzshaodan@163.com

收稿日期: 2014-10-31

  网络出版日期: 2015-04-21

基金资助

"十二五"国家科技支撑计划(2012BAD39B04);江苏省农业科技自主创新资金项目(CX(14)2080);江苏省农业三新工程项目(SXGC2013356)

Effects of Stocking Density on Performance, Immune Organ Indexes and Meat Quality of Yellow-Feathered Broilers

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  • Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225125, China

Received date: 2014-10-31

  Online published: 2015-04-21

摘要

本试验旨在探讨饲养密度对黄羽肉鸡生产性能、屠宰性能、免疫器官指数和肉品质的影响。选用1 440只21日龄苏禽黄羽肉鸡(公雏),随机分为3组,分别为8(LSD组)、16(MSD组)和24只/m2(HSD组),每组3个重复,饲养面积为10 m2/间。试验期为21 d,从22~42日龄。结果表明:降低饲养密度能极显著增加42日龄黄羽肉鸡体重、平均日增重和平均日采食量(P<0.01)。饲养密度对黄羽肉鸡屠宰性能无显著影响(P>0.05)。LSD组黄羽肉鸡肝脏重极显著高于HSD组(P<0.01),胸腺重和胸腺率极显著高于其他2组(P<0.01)。LSD组和MSD组腿肌系水力极显著高于HSD组(P<0.01)。由此可知,适当降低饲养密度能够改善黄羽肉鸡生产性能、免疫器官指数和肉品质,综合这3方面结果,16只/m2饲养密度效果最佳。

本文引用格式

邵丹, 张珊, 施寿荣, 王强, 常玲玲, 童海兵 . 饲养密度对黄羽肉鸡生产性能、免疫器官指数和肉品质的影响[J]. 动物营养学报, 2015 , 27(4) : 1230 -1235 . DOI: 10.3969/j.issn.1006-267x.2015.04.029

Abstract

This experiment was conducted to evaluate the effects of stocking density on performance, carcass performance, immune organ indexes and meat quality of yellow-feathered broilers. A total of 1 440 twenty-one-day-old Suqin yellow-feathered broilers were randomly placed into 3 groups, 8 (LSD), 16 (MSD) and 24 birds/m2 (10 m2/pen) (HSD), respectively. Each group was represented by 3 replicates (pens). The experiment lasted for 21 d (from 22 to 42 days of age). The results showed that body weight (BW), average daily gain and average daily feed intake were significantly increased with decreasing stocking density of yellow-feathered broilers at 42 days of age (P<0.01). The carcass yield was not significantly affected by stocking density (P>0.05). Liver weight of LSD group was significantly higher than HSD group (P<0.01), as well as water-holding capacity of LSD group and MSD group (P<0.01). Thymus weight and thymus weight rate of LSD group was significantly higher than the other groups (P<0.01). In conclusion, the findings in this study reveal that decreasing stocking density properly has a beneficial effect on performance, immune organ indexes and meat quality of yellow-feathered broilers, and 16 birds/m2 group is the best.

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