Genetic control of environmental variation of two quantitative traits of Drosophila melanogaster revealed by whole-genome sequencing.
Results of four generations of a canalising selection for rabbit birth weight.
Garreau, H., Bolet, G., Larzul, C., Robert-Granie, C., Saleil, G., SanCristobal, M.Estimation of breeding values for mean and dispersion, their variance and correlation using double hierarchical generalized linear models. Felleki, M., Lee, D., Lee, Y., Gilmour, A.In: 9th World Congress on genetics applied to livestock production (p. Results of 10 generations of canalising selectionfor rabbit birth weight. Bodin, L., Garcia, M., Saleil, G., Bolet, G.The results obtained in this research show the residual of body weight records at 28 days old is under control of additive genetic variance and uniformity can be achieved by means of genetic selection. Low and unfavorable genetic correlation (0.09) was obtained between mean and residual. The Spearman rank correlation between estimated breeding values in mean and dispersion was low (0.094). Although heritability for residual was low but it was significant (p<0.01). Heritability for mean (0.51) was larger than the heritability for the residual (0.02). Therefore decreasing estimated breeding value of residual by 1 genetic standard deviation can increase the uniformity of body weight at 28 days old by 42%.
The genetic standard deviation for residual of body weight was 0.42. Additive genetic variance for mean and residual were 189.59 and 0.18, respectively and were statistically significant (p<0.01). Double hierarchical generalized linear model (DHGLM) was used to estimate (co) variance components using ASREML 4.0 software. A total of 2629 quail body weight records at 28 days old were used in this research. The aim of this research was to estimate genetic parameters for mean and residual of body weight in Japanese quail.