In this paper the equations for prediction of dressing percentage in cattle are presented. Equations were developed on the basis of body weight and carcass weight of the various categories of bovine animals (bulls, heifers, calves and cows) which were slaughtered in one of the Slovenian slaughterhouses (n=22.930). In the first line, the equations enable the prediction of bodyweight of cattle on a basis of carcass weight. Indirectly, the equations allow the estimation of some parameters that are needed for the herd management (eg. an assessment of cow's bodyweight which is needed to calculate maintenance requirements; assessment of bodyweight of fattening cattle which is needed to assess the daily weight gains, etc.).
B.03 Paper at an international scientific conference
COBISS.SI-ID: 5151080In the present study we show the results of weight gain and carcass quality of beef recording in year 2015. The number of animals, weight of calves, gain and carcass characteristics according to breed and years are presented. In 2015, 1.488 animals, 1.064 of these calves, were controlled. Net weight gain was calculated according to hot carcass weight and age of the animals. Estimate of live weight gain was also assessed. In the results, a comparison of weight gain in the time of controlling and results from the slaughter line is presented.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 4990056Data of crossbreeding for beef production was analyzed for Slovenia. Analysis was made on data for young bulls aged 12-24 months which were slaughtered in Slovenian abattoirs in the year 2015. A comparison was made for crossings of main cow breeds (ČB-Holstein, RJ-Brown, LS-Simmental) with main meat breeds (Limousin-LIM, Charolais-CHA, Belgian blue-BBP) used in Slovenia. The improvement of carcass value when crossing with meat breeds was proportional to the dairy type of the cow, it was the most important in the case of ČB, a little lesser in the case of RJ, whereas much smaller effect was observed in the case of LS breed. Crossing with CHA was the most important for growth performance (higher carcass weight and net daily gain), whereas crossing with BBP was the most efficient for improving conformation and decreasing fatness. Practically no improvement (in terms of EUROP classification) was observed in the case of LS×LIM crossing. In the context of the price system actually in place in Slovenia, the overall realization at the slaughter line implies, that only crossing with CHA breed has some advantage compared to the bulls of LS breed, however this crossing is little used in Slovenia.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 4989800