畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (8): 1574-1580.doi: doi: 10.11843/j.issn.0366-6964.2016.08.007

• 动物营养 • 上一篇    下一篇

不同氨气浓度对肉鸡福利的影响

孟丽辉1,李聪1,卢庆萍 1* ,张宏福1,马金霞2   

  1. (1.中国农业科学院北京畜牧兽医研究所 动物营养学国家重点实验室,北京 100193;2.内蒙古自治区农业广播电视学校,呼和浩特 010010)
  • 收稿日期:2015-09-06 出版日期:2016-08-23 发布日期:2016-08-23
  • 通讯作者: 卢庆萍,副研究员,E-mail:luqingping@iascaas.net.cn
  • 作者简介:孟丽辉(1991-),女,山东阳谷人,硕士生,主要从事动物营养与饲料科学研究,E-mail:mlh2012caas@126.com
  • 基金资助:

    国家科技支撑项目(2012BAD39B0);中国农业科学院科技创新工程(ASTIP-IAS07)

Effect of Different Ammonia Concentrations on Broiler Welfare

MENG Li-hui 1,LI Cong 1,LU Qing-ping 1* ,ZHANG Hong-fu 1,MA Jin-xia 2   

  1. (1.State Key Laboratory of Animal Nutrition,Institute of Animal Science,Chinese Academy
    of Agricultural Sciences,Beijing 100193,China;`2.The Inner Mongolia Autonomous Region
    Agricultural Broadcasting and Television School,Hohhot 010010,China)
  • Received:2015-09-06 Online:2016-08-23 Published:2016-08-23

摘要:

试验旨在探讨养殖环境中氨气不同程度的聚集对肉鸡福利状况的影响。本研究选择21日龄健康状况良好、体重相近(743.6±8.2 g)的爱拔益加(AA)肉鸡320只,平均分在4个呼吸舱中饲养,网上平养,舱内氨气浓度分别控制在0、25、50、75 mg•kg-1。42日龄时对各处理肉鸡的福利状况进行评估。结果显示,不同浓度的氨气处理对肉鸡死亡率与羽毛清洁度评分无显著影响(P>0.05),但显著影响了肉鸡的脚垫评分、跗关节评分及步态评分(P<0.05)。氨气浓度为75 mg•kg-1处理的鸡只脚垫及步态评分显著高于其他3个处理(P<0.05)。暴露于75 mg•kg-1氨气浓度下的肉鸡跗关节损伤程度显著高于50 mg•kg-1处理(P<0.05),50 mg•kg-1处理下的肉鸡跗关节损伤程度显著高于0和25 mg•kg-1处理(P<0.05)。由此可见,舍内氨气的积聚会影响肉鸡的福利水平。随着氨气浓度的升高,肉鸡出现羽毛污损、足跗关节及脚垫感染、跛行、行走不稳等状况的几率和程度加大。为保证肉鸡的健康和福利,鸡舍内氨气浓度最好控制在25 mg•kg-1以内。

Abstract:

The experiment was designed to investigate the effect of different ammonia concentration on broilers’ welfare condition in the breeding environment.Three hundred and twenty healthy AA broilers 20 days old with similar weight ((743.6±8.2)g),were randomly divided into 4 respiratory chambers,and raised on the net.The ammonia concentrations in the 4 chambers were controlled at 0,25,50,75 mg•kg-1,respectively.The broilers’ welfare situation in 4 treatments was assessed at the age of 42 day.The results showed that different ammonia concentrations had no significant effect on broilers’ mortality and feather cleanliness score (P>0.05),but significantly influenced the foot pad damage score,elbow damage degree score and gait score(P<0.05).The foot pad damage score and gait score of broilers under 75 mg•kg-1 ammonia concentration were significantly higher than the other treatments(P<0.05).The broilers’ elbow damage degree score under 75 mg•kg-1 ammonia concentration was significantly higher than the 50 mg•kg-1 treatment(P<0.05),and the 50 mg•kg-1 treatment was significantly higher than the 0 and 25 mg•kg-1 treatments (P<0.05).In conclusion,the accumulation of ammonia could affect the broilers’ welfare.As ammonia concentration rise,the broilers have higher probability and degree of feathers dirt,elbow and foot pad infection,lameness and unsteady gait.In order to ensure the broilers’ health and welfare,the ammonia concentration in the henhouse have better be controlled within 25 mg•kg-1.

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