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来源：百度知道 编辑：UC知道 时间：2024/04/27 07:04:35
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.
活挑选的荷尔斯坦公牛的使用。 (不为遗传基因的进步推荐).
这一个方法每世代在这一项报告中被详细说明的所有的方法中有慢的遗传基因的前进。活挑选的荷尔斯坦公牛的使用能慢慢地向前地移动兽群的发展但是当做公牛是一个未知的日用品，直到他有他的第一个挤奶女儿。 有其他的因素要考虑如此的当做交叉的污染和健康和受雇人员的安全。 经过这一个方法引起高的遗传基因的功绩、高生产和遗传基因的可销售的兽群极端地不太可能如果不是不可能。
估计时间发展一个精华遗传基因的聚集: 极端地不太可能曾经被达成。