Livestock Studies 2006, Vol 46, Num, 1     (Pages: 001-005)

The Linear and Nonlinear Growth Curves Based on The Live Weight Measurements of Simmental x Southern Anatolian Red Crossbred Cattle

Cemil ÇOLAK 1 ,Mehmet N. ORMAN 2 ,Okan ERTUĞRUL 3

1 Başbakanlık Gümrük Müstesarlıgı Gümrükler Genel Müdürlüğü - ANKARA
2 Ankara Üniversitesi Veteriner Fakültesi Biyoistatistik Anabilim Dalı - ANKARA
3 Ankara Üniversitesi Veteriner Fakültesi Genetik Anabilim Dalı - ANKARA
Viewed : 397 - Downloaded : 244 In this study, nonlinear logistic, Gompertz and linear growth curves were obtained based on the live weight measurements of Simmental x Southern Anatolian Red crossbred cattle F1xB1 genotype. It was studied the autocorrelation of the residuals from the linear, Gompertz and logistic growth curve models. Goodness of fit of the models was determined by the values of mean square error and coefficient of determination.

It was concluded that Gompertz growth curve model was more successful than linear and logistic models in the description of weight-age process according to goodness of fit criterions. Keywords : Growth model, live weight, cattle, simmental, southern anatolian red