Comparison of calving and revenue-generating qualities in beef-sired male and female progeny from dairy cows

Although interest in beef-on-dairy breeding strategies is intensifying, little actually known of the performance differences between beef-sired male and female progeny dairy cows. The objective was therefore to use a large cross-sectional database up 1,389,670 animals investigate if existed generated from matings; focus on characteristics both producer (i.e., gestation length, calving performance, perinatal mortality, calf sale value) beef slaughter-related traits). While statistical sexes, observed were not always biologically large, with some favoring females (e.g., traits age at slaughter) males carcass weight). Beef-sired calves had, average, 0.8 d longer than their counterparts; sex difference dairy-sired was, 1.1 d, advantage females. odds difficult 2.2 times greater for relative calves; this translated predicted probability dystocia sexes 1.8 percentage units. Male sold auctions <42 worth, €32.40 more calves. Focusing just progeny, heifer carcasses (mean weight 280.0 kg), steers 336.9 kg) bulls 335.4) 55.4 56.9 kg heavier. Based 15-point conformation scale, 1 unit superior heifers, latter being 0.06 units better steers. Heifers slaughtered, 79.1 younger although heifers 93.8 older bulls, generally finished intensive diet Ireland. In conclusion, many benefits exist that they shorter gestations less expected assistance required and, value lighter counterparts, slaughtered several months