高海拔地区隐性白羽肉鸡生长曲线的拟合与分析

试验测定了隐性白羽肉鸡在高海拔饲养环境中2～20周龄的体重和胫长,用logistic、Gompertz模型拟合了生长曲线。结果表明隐性白羽肉鸡体重和胫长生长受高海拔环境抑制,logistic和Gompertz模型都适宜拟合隐性白羽肉鸡在高海拔体重和胫长的生长过程,拟合度高,其中logistic模型优于Gompertz模型。隐性白羽公鸡比母鸡有较高的成年体重、拐点体重、绝对生长速度和相对生长速度。

Analysis on Growth Curves of Recessive White Feather Chicken in High Altitude Region

Body weight and shank length of recessive white feather chickens that were introduced and reared in high altitude environment were measured at 2-20 weeks old. Growth curves were fitted with logistic and Gompertz models. The results indicated that high altitude condition could suppress the growth of weight and shank length of the chickens. Both logistic and Gompertz models fitted the growth courses of weight and shank length in recessive white chickens,and logistic model was better than Gompertz model. The introduced recessive white feather cock showed a better adult weight,inflection point weight,absolute growth rate and relative growth rate.