Growth and Development Indices Measuring and the Growth Curve Fitting Analysis of Fuqing Goats

In this paper,the body weight,body size and other growing indices of Fuqing goats from 0to 18 months were detected,and three kinds of nonlinear models,Von Bertalanffy,Gompertz and Logistic,were used to investigate the growing and developing regularity of Fuqing goat.The results showed that the average weight of ram were 1.98 kg when birth,24.19 kg at 12 months,32.41 kg at 18 months,and those of ewes were 1.74 kg when birth,24.58 kg at 12 months,29.34 kg at 18 months,which indicated that the body weight of male Fuqing goats in different growth periods were higher than those of the female except at 12 months.The size of ram was bigger than ewes.The traits of body height and body length grew faster in 2months and chest girth grew faster in 4months.The chest girth of Fuqing goats was proved to be important for the weight gain.Among three growth curve models,Von Bertalanffy fitted best,and the fitting equations for male and female Fuqing goats were W = 38.384(1-0.527e-0.118t)3 and W = 33.945(1- 0.545e-0.133t)3,the inflection point of age were 3.9and 3.7month,and the inflection point of weight were 11.4and 10.1kg,respectively.