Leg health and performance of broiler chickens reared in different light environments
Leg health and performance of broiler chickens reared in different light environments
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DOI：
10.1080/00071660600753557
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发表时间：
2006-06-01
影响因子：
2
通讯作者：
Wathes, C. M.
中科院分区：
文献类型：
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作者：
Kristensen, H. H.;Perry, G. C.;Wathes, C. M.
1.采用2 × 2试验设计（8组，每组275只），研究了两种光源（欧司朗biolux和欧司朗暖白光）和两种光照强度（5和100 clux，根据鸡的感知照度进行调整）下光源和光照强度对雌性ROSS 308肉鸡腿部健康和生产性能的影响.在41日龄时，在每个光照环境中测定50只鸡的体重、步态评分、足垫皮炎和跗关节烧伤。此外，每周的饲料摄入量和体重测定组的基础上，死亡率连续记录。光照环境不影响步态评分或飞节烧伤的严重程度。中度至重度跛行和跗关节烧伤的风险随体重增加而增加。体重超过2400 g的鸟类在biolux光下发生中度足垫病变的概率增加。体重与步态评分呈正相关，步态评分与跗关节烧伤呈正相关。足皮炎与飞节烧伤弱相关，这与早期的研究结果相矛盾。光照环境对采食量、体重和死亡率没有影响.本研究中采用的光源和强度不会对半商业化饲养的肉鸡的生产或腿部健康产生不利影响。
1. The effects of light source and intensity on leg health and performance of female ROSS 308 broiler chickens were investigated in a 2 x 2 experimental design (8 groups of 275 chicks) of two light sources (Osram biolux and Osram warm-white) and two light intensities (5 and 100 clux, adjusted to fowl-perceived illuminance).2. At 41 d of age, body weight, gait-score, footpad dermatitis and hock-burn were measured on 50 birds from each light environment. In addition, weekly feed intake and body weight were determined on a group basis and mortality was recorded continuously.3. The light environment did not affect the severity of the gait-score or hock-burns. The risk of moderate to severe lameness and hock-burns increased with body weight. Birds weighing more than 2400 g had an increased probability of moderate footpad lesions in biolux light.4. Weight and gait-score, as well as gait-score and hock-burn were positively correlated. Podo-dermatitis was weakly correlated with hock-burn, which contradicts earlier findings. The light environment did not affect feed intake, body weight or mortality.5. The light sources and intensities employed in this study did not adversely affect production or leg health of broiler chickens reared semi-commercially.