Fresenius Environmental Bulletin, cilt.28, sa.9, ss.6883-6889, 2019 (SCI-Expanded, Scopus)
Growth curve estimates of livestock can be used as a criterion for genetic breeding. This study investigated the possibility of using the hierarchical linear and non-linear growth curves model parameters as a selection criterion in the Japanese quail (Coturnix coturnix japonica). The growth curves of the quails were estimated using the hierarchical linear and hierarchical non-linear models according to the Bayesian approach. Then, the variance components of the posterior values of the growth curve model parameters were estimated by means of univariate and multivariate models and the genetic parameters were obtained, p and a posterior averages of hierarchical linear model were 4.03 and 132.6 whereas Ø 1, Ø 2 and Ø 3 parameters of hierarchical non-linear model posterior averages were found to be 212.7, 15.8 and-0.14, respectively. The herita-bility of 0.47 and 0.48 was estimated for p and a parameters. Heritability estimations of 0.49, 0.30 and 0.28 were obtained for Ø 1, Ø 2 and Ø 3 parameters, respectively. High phenotypic and genetic relationships between the parameters of both models and the observations were determined. In the experiment it can be concluded that the hierarchical linear and hierarchical non-linear model parameters could be the criteria of selection for the genetic breeding of quails.