摘要
The effect of six genotypes (Zebu = Z, European Brown Swiss = EBS, Holstein = H, Z × EBS, Zebu × American Brown Swiss = ABS, Z × ABS, Z × H) on carcass and meat characteristics of young bullocks finished under feedlot conditions was tested. The Z × ABS bullocks had the highest (P = 0.001) average daily gain. The highest (P = 0.017) final liveweight was observed with Z × ABS > EBS > H genotypes. The ribeye area was larger (P = 0.012) for EBS bullocks. Both H and EBS bullocks had lowest (P = 0.001) physiological maturity; although the H bullocks had higher (P = 0.006) pelvis and heart fat values. The best (P = 0.014) conformation was obtained with the Z × ABS and Z × EBS genotypes. The greatest amount of marbling (P = 0.001) was obtained with the H genotype. In general, the crossbred genotypes showed better feedlot performance and carcass characteristics, and it seems that Holstein breed could have a an advantage from the marbling score point of view.
摘要译文
六种基因型的效果（Zebu = Z，欧洲棕色Swiss = EBS，Holstein = H，Z×EBS，Zebu×Abs Brown Swiss = ABS，Z×ABS，Z×H）胴体和肉类特征的年轻公牛完成测试饲料条件。 z×abs bullocks的平均每日增益最高（p = 0.001）。用Z×ABS> EBS> H基因型观察到最高（P = 0.017）最终活重。 EBS Billocks的Ribeye区域更大（p = 0.012）。 H和EBS Bullocks都有最低（P = 0.001）生理成熟度;虽然H Bullocks具有更高（p = 0.006）骨盆和心脏脂肪值。用Z×ABS和Z×EBS基因型获得最佳（P = 0.014）构象。用H基因型获得最大的大理石大理石（P = 0.001）。通常，杂交基因型显示出更好的饲料表现和胴体特性，似乎荷斯坦品种可能具有从大理石摩尔比得分的观点来看的优势。
O. V. Vazquez-Mendoza [A];G. Aranda-Osorio [A];M. Huerta-Bravo [A];A. E. Kholif [B];M. M. Y. Elghandour [C];A. Z. M. Salem [C] [D];E. Maldonado-Simán [A]. Carcass and meat properties of six genotypes of young bulls finished under feedlot tropical conditions of Mexico[J]. Animal Production Science, 2017,57(6): 1186-1192