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来源：百度知道 编辑：UC知道 时间：2024/05/08 01:05:58
The Use of live selected Holstein bulls. (Not recommended for genetic improvement).
This method has the slowest genetic progression per generation in all the methods detailed in this report. The use of live selected Holstein bulls can move the development of the herd forward slowly but as the bulls is an unknown commodity until he has his first milking daughters. There are other factors to consider such as cross contamination and health and safety of employees. To breed a high genetic merit, high production and genetic marketable herd through this method is extremely unlikely if not impossible.
Estimated Time to Develop an Elite Genetic Herd: Extremely Unlikely ever to be achieved.
This method has the slowest genetic progression per generation in all the methods detailed in this report. The use of live selected Holstein bulls can move the development of the herd forward slowly but as the bulls is an unknown commodity until he has his first milking daughters. There are other factors to consider such as cross contamination and health and safety of employees. To breed a high genetic merit, high production and genetic marketable herd through this method is extremely unlikely if not impossible.
Estimated Time to Develop an Elite Genetic Herd: Extremely Unlikely ever to be achieved.
使用实弹选定的荷斯坦种公牛. (不推荐用于遗传改良) . 这种方法最慢的遗传进展,每一代的所有方法在本报告中详述. 使用实弹选定荷斯坦种公牛可以推动发展的羊群前进缓慢,但由于公牛 是一个不知名的商品,直到他有一次挤奶女儿. 还有其他需要考虑的因素,如交叉污染和安全卫生的员工. 孕育出了较高的遗传优点, 高产遗传适销对路畜群通过这种方法是微乎其微,如果不是不可能的. 估计时间来建立一个精英畜群遗传:极不可能永远都不会实现.