A Fitting Analysis of the Growth and Development Rules of the Spheniscus demersus Chicks
In order to investigate the growth and development of Spheniscus demersus chicks,we measured the body mass,body length,bill length,foot length and wing length of 0-7 months old chicks of S.demersus in Shanghai Zoo.Two nonlinear models,Logistic and Gompertz,were used to fit and analyze each body size index of the hatchlings.The results show that both Logistic and Gompertz models had a high fitting degree for each growth indicator of S.demersus,and the fit-ting coefficient(r2)was above 0.970.The Logistic model was used to better fit the growth process of the body mass,body length,bill length and foot length of S.demersus(r2>0.980),while Gompertz model was more suitable for fitting the growth process of wing length.There was a significant correlations between the body size indexes(p<0.01).It is suggested that the body weight and body length could be used as important indicators to monitor and evaluate the health status of S.demer-sus chicks.
Spheniscus demersusGrowth and developmentCurve fitting
NETL
NSTL
万方数据
维普
