笼养密度对肉仔鸡行为的影响及其与胸囊肿发生率的关系  

Effects of stocking density on behavior and breast blister of broilers in cage

作　　者：赵芙蓉[1] 李保明[1] 赵亚军[1] 耿爱莲[1] 施正香[1] 

机构地区：[1]农业部设施农业生物环境工程重点开放实验室

出　　处：《中国农业大学学报》2007年第5期61-66,共6页Journal of China Agricultural University

基　　金：国家"十一五"科技支撑重点项目(2006BAD14B01);北京市教育委员会共建项目建设计划(XK100190650)

摘　　要：研究笼养密度分别为17只/m^2（高密度）、14只/m^2（中密度）和11只/m^2（低密度）条件下,4-6周龄肉仔鸡的行为特点,以及笼养密度与胸囊肿发生率的关系。结果表明：笼养肉仔鸡各行为持续时间比例中趴卧最高,达77.08%。6周龄肉仔鸡行为与4和5周龄的相比,其行为受密度的影响最大：高密度下趴卧持续时间长、频次低（P〈0.05）;低密度下行走、饮水、采食、梳羽、舒展、晃动等活动型的行为频次高、持续时间长（P〈0.05）;高密度下胸囊肿发病率显著高于低密度（P〈0.05）,且发病率与晃动、梳羽行为持续时间比例及趴卧频次均具有显著的负相关关系（r=-0.997,P=0.048;r=-0.999,P=0.028;r=-0.996,P=0.034）。高笼养密度条件下,肉仔鸡趴卧行为持续时间长,晃动、梳羽等活动型行为持续时间缩短,频次降低,其胸囊肿发生率增大。In order to investigate influencing theory of stocking density on the incidence of breast blister for broilers, the behavior patterns of bro（lers caged in different densities, 17 birds/m^2, 14 birds/m^2 and 11 bfrds/m^2 from the ages of four weeks to six weeks were observed. The results showed that broilers performed more sitting on the cage floor （arrived at 77.08% ）. The stocking density had the greatest effect on the behavior of broilers in 6 weeks compared with 4 and 5weeks. The duration and number of sitting were more in high density （17 birds/m^2） than in low density （11 birds/ m^2） （P〈 0.05）, while the duration and number of active behaviors, such as walking, drinking, feeding, preening, stretching and shaking in low density, were more than high density （P〈 0.05）. Meanwhile the incidence of breast blister was significantly higher in high density than in low density （P〈 0.05）. There was significantly negative correlation between the incidence of breast blister and the duration of shaking, preening and the number of sitting （r = -0.997, P = 0.048; r = - 0.999, P = 0.028; r = - 0.996, P = 0.034）. This present study showed that the duration or number of sitting, shaking and preening were much effected by stocking density, so as to the incidence of breast blister was done.

关 键 词：笼养 密度 肉仔鸡 行为 胸囊肿 

分 类 号：S815.2[农业科学—畜牧学]