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Effect of Crossbreeding on Beef Production of Jersey Herd Using Fleckvieh Sires Maintained on a Pasture-Based Feeding System

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Open Journal of Animal Sciences 2016年第3期6卷 163-168页

作者： Sindisile Goni Carel Johan Christiaan Muller Bekezela Dube Kennedy Dzama Döhne Agricultural Development Institute Stutterheim South Africa Department of Animal Sciences University of Stellenbosch Stellenbosch South Africa Western Cape Department of Agriculture Research and Technology Development Services Directorate: Animal Sciences Elsenburg South Africa Agricultural Research Council Irene South Africa

Jersey bull calves and steers produce high quality meat;however, the growth rate of Jersey bull calves for veal and beef are low in comparison to other dairy breeds. This could be improved by crossbreeding with beef breeds. In the current study, the veal and beef production of Jersey and Fleckvieh × Jersey (F × J) bull calves and steers were compared. Bull calves were reared intensively for veal up to a carcass weight not exceeding 100 kg, or as steers for beef to 21 months of age. In both veal and steer production systems, the mean birth weight of F × J bull calves was higher (P age differed (P age daily gain (ADG) of 0.82 ± 0.02 kg/day for F × J compared to 0.73 ± 0.02 kg/day for Jersey bull calves. Marketing age in the veal production system differed (P age, respectively. End live weight at 21 months of age of Jersey and F × J differed (P age daily gain in F × J vs. Jersey steers, i.e. 0.64 ± 0.02 and 0.46 ± 0.0 kg/day, respectively. Fleckvieh × Jersey steers had a higher (P age being 206.5 ± 8.9 kg vs. 157.9 ± 8.6 kg respectively. These results indicated the potential of improving beef production characteristics of the Jersey cattle through crossbreeding.

关键词： Average Daily Gain Birth Weight Body Weight Carcass Weight slaughter age

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