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来源：百度知道 编辑：UC知道 时间：2024/05/08 00:47:06
The use of Selected Unproven Semen (Select Use in the Program)
It is understood that the use of frozen semen from local bulls is common in China in some areas, although this is rudimentary selection in some form, the genetic progress or development would be little better than the use of selected live bulls detailed above. However the use of selected young sire semen from high quality young sires sourced through established and recognized Holstein breeding establishments will give genetic progress. These are sires that have been purchased by successful breeding companies and are from the best bloodlines selected by their geneticists and sire analysts. The average genetic merit of these young sires will be above that of proven sires, however as they are still unknown commodities as to what they will transmit the genetic progress is the second slowest method of genetic progress.
It is understood that the use of frozen semen from local bulls is common in China in some areas, although this is rudimentary selection in some form, the genetic progress or development would be little better than the use of selected live bulls detailed above. However the use of selected young sire semen from high quality young sires sourced through established and recognized Holstein breeding establishments will give genetic progress. These are sires that have been purchased by successful breeding companies and are from the best bloodlines selected by their geneticists and sire analysts. The average genetic merit of these young sires will be above that of proven sires, however as they are still unknown commodities as to what they will transmit the genetic progress is the second slowest method of genetic progress.
使用选定的新奇精液(选择使用的程序) ,它是理解,使用冷冻精液 从当地公牛常见的是在中国的一些地区,虽然这是最起码的选择,以某种形式 遗传进展或发展将略优于使用选定的活公牛详细以上. 但是使用选定的年轻父系精液从优质绵羊年轻货源,通过建立和公认的荷斯坦奶牛育种 场所将给予遗传进展. 这些绵羊已经购买成功育种公司,并从最佳选血缘其 遗传学家和父系分析员. 平均遗传优点,这些年轻的绵羊将上述行之有效的绵羊, 但是由于他们仍是未知之品,因为他们将把遗传进展是第二慢 方法遗传进展.