摘要
本文利用杂合度分析和连锁群分析对乳蛋白基因座位与产奶量及乳成分等数量性状基因间的连锁关系进行了探讨。结果表明，各乳蛋白基因均具有较高的纯合度，但３个酪蛋白基因同时考虑时纯合度较低。泌乳性状的变差对乳蛋白基因座位杂合度没有明显的回归关系。Ｋ－ＣＮ基因与乳脂率和乳蛋白率，α_（ｓ１）－ＣＮ基因与３０５无产奶量间有显著的连锁关系。
The linkage relationship between milk protein loci and lactation trait loci, such as milk yield,fat percent,protein percent and dry matter percent,were fully investigated by the methods of heterozygosity analysis and linkage group analysis.The results showed that each single protein locus showed a higher homozygosity while the three easein loci showed a lower homozygosity when they were investigated simeltaneously. There was no significant regression of deviations in lactation traits on overall marker heterozygosity.Significant linkage between k-CN locus and milk fat percent and protein percent,and that betweenα_(s1)-CN locus and 305-d milk yield were fownd.
基金
博士点基金
