哈萨克羊选育提高效果分析

Analysis on the Breeding Improvement of Kazakh Sheep

为更好地开展哈萨克羊提纯复壮工作,对哈萨克羊历史数据(原始群)和选育群体尺、体重及产肉进行比较分析。结果表明,选育群公羊体重、体高、体长、胸围、胸宽、胸深分别比原始群公羊高出6.57%、11.28%、17.85%、7%、25%、10.60%。5月龄公羔屠宰率比7～8月龄原始群羯羊高出6.73%,5月龄母羔屠宰率比7～8月龄原始群羔羊高出5.49%,1.5月龄选育群公羊屠宰率比同岁原始群羯羊高4.5%。选育群成年羊屠宰率比原始群成年羊高5.47%。可知,选育群公母羊体尺、体重及产肉性能与历史数据(原始群)相比具有显著的差异,选育群的哈萨克羊体尺、体重及产肉性能得到显著提高。

In order to better carry out the purification and rejuvenation of Kazakh sheep, com- pared and analyzed the body size , weight and meat production of original group and breeding groups. The results showed that the weight, body height, body length, chest circumference, chest width, and chest depth of the breeding herds were 6.57%, 11.28%, 17.85%, 7%, 25% and 10.60% high- er than those of the original herd. The slaughter rate of 5 month old lambs was 6.73% higher than that of ？ to 8 month old primaries, and the slaughter rate of 5 month old lambs was 5.49% higher than that of the 7 to 8 months old lambs, which was 1.5 months old. The slaughter rate of sheep was 4.5% higher than that of the same age group. The slaughter rate of adult sheep in the breed - ing group was 5.47% higher than that of the original groupm. So we kan see that the body size, weight, and meat performance of breeding male and female ewes were significantly different from historical data（primary group）. The body size, body weight, and meat performance of the Kazakh sheeps of the breeding group were significantly improved.