美国瑞士褐牛与新疆褐牛杂交后代生长及产奶性能分析

Analysis on the Growth and Milk Production Performance of the Hybrid Progeny of American Brown Swiss Cattle and Xinjiang Brown Cattle

为了提高新疆褐牛的生产性能,引进美国瑞士褐牛冻精进行了杂交试验。本试验对美×新褐牛F1、F2代生长发育和产奶性能多项指标进行了测定和分析。统计结果表明,F1、F2代在保持了新疆褐牛原有的高乳脂率、耐粗饲、适应性强的基础上,胸围、体长和产奶性能都有明显的提高,特别是产奶牛体型趋向于修长的三角型,F2代表现的产奶量增长十分显著,说明在全舍饲条件下通过引进冻精导入美国褐牛遗传物质,是提高新疆褐牛产奶性能的有效途径。

In order to improve the milk production performance of Xinjiang Brown cattle,the frozen semen of American Brown Swiss cattle had been introduced for hybridization experiment.The growth and production performance of F1,F2 generation from American Brown Swiss cattle × Xinjiang Brown cattle were measured and analyzed.Statistical analysis showed that the bust,body length and milk performance of F1,F2 generations had been significantly improved based on the maintains of the original high fat content,resistance to crude feed and adaptability,especially the body type of milking cows tend to be slender triangular body size,as well as the growth in milk production of F2 generations was very significant.Results indicated that introducing of American Brown Swiss cattle frozen semen to improve the milk performance of Xinjiang Brown cattle is an effective way in the whole feeding conditions.