Effects of marked chromosome sections on milk performance in cattle
Effects of marked chromosome sections on milk performance in cattle
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标记染色体片段对牛产奶性能的影响
DOI：
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发表时间：
1985
影响因子：
5.4
通讯作者：
B. Roth
中科院分区：
文献类型：
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作者：
H. Geldermann;U. Pieper;B. Roth
对父系半同胞的研究开始于这样一个假设，即等位基因从父亲转移到后代也表明遗传了来自有关父亲的两条同源染色体的不同部分。借助20个基因系统，标记了单个染色体片段的转移，并测试了其对产奶性能性状的影响。使用了1，457头德国黑白花奶牛，登记为三个父系的女儿。一些染色体片段对所考虑的性状表现出显著的影响。由于特别是那些携带乳蛋白基因的染色体参与其中，因此假定连锁基因座组影响产奶量的遗传方差。讨论了这些结果应用于实际育种的可能性及其意义。
SummaryThe investigations of paternal half sibs start with the assumption that the transfer of an allele from a father to an offspring also indicates the inheritance of a distinct section of two homologous chromosomes from the father concerned. With the help of 20 gene systems, the transfers of single chromosome sections were marked and tested with regard to influences on milk performance traits. 1,457 German Friesian cattle, registered as daughters of three sires, were used. Some of the chromosome sections showed significant effects on the traits considered. Since especially those chromosomes which bear genes for milk proteins were involved, it was assumed that groups of linked loci influence the genetic variance of milk production. Possibilities for applying the results to the practical breeding situation and their significance are discussed.