本文旨在探讨不同饲养方式对肉仔鸡健康状况和行为的影响。选择健康状况良好、体重为（367.66±1.12）g的480只22日龄爱拔益加肉公鸡，随机分在地面平养、网上饲养及散养3个处理中，每个处理4个重复，每个重复40只鸡。试验期28 d。结果表明：各处理间肉仔鸡的饮水、采食、修饰和休息行为的次数、紧张不动性的持续时间、腿长、腿宽的不对称性（FA）及腿长、腿宽和翅膀长的综合FA、羽毛质量评分（FCS）无显著差异（P>0.05）。与其他2个处理相比，散养组肉仔鸡日常的觅食、沙浴及运动行为的次数显著增加，步态评分值显著降低（P<0.05）。与网上饲养相比较，散养显著降低了肉仔鸡翅膀宽的FA（P<0.05）。由此可知，散养在一定程度上提高了肉仔鸡的健康状况，丰富了肉仔鸡的自然行为。

The trial was conducted to investigate the effects of rearing pattern on health and behavior of broilers. Four hundred and eighty 22-day-old healthy AA cocks with an average body weight of (367.66±1.12) g were allocated into three treatments, which included floor reared, net reared, extensive reared group, and four replicates in each treatment, forty broilers in each replicate. The results showed that, there were not significant differences in the times of drinking, foraging, preening and resting, the tonic immobility duration (TI), fluctuanting asymmetry (FA) of leg length and width and the combined fluctuanting asymmetry of leg length, leg width and wing length, and feather conditions score (FCS) among treatments (P>0.05). Compared to the other two treatments, the times of foraging, sand bathing and movement behavior in extensive reared group increased significantly, and gait score (GS) decreased significantly (P<0.05). Compared to the net reared group, fluctuanting asymmetry (FA) of wings width in extensive reared group increased significantly (P<0.05). It was concluded that the extensive reared group improved the health status and enriched the natural behavior of broilers.