Factors affecting reproduction in Merino ewes were investigated using data of 7 917 matings of 2 258 ewes in the Tygerhoek flock during the lambing seasons of 1971 to 1984. The ewes were run in a selection trial to evaluate…
Data of the Elsenburg Dormer sheep stud which was kept closed since its inception, were collected over a period of 50 years (1941-1990). These data were analysed to monitor the increase in actual level of inbreeding and to investigate the…
Knowledge of genetic correlations among traits is essential for deriving a selectionstrategy for any breed. In this study, genetic and phenotypic correlations were estimated among weaning weight (WW), nine- (W9) and 18-month body weight (W18), clean fleece weight (CFW), mean…
