The invention relates to the raise
livestock field, and discloses a method for predicating
milk yield of small tailed han sheep by virtue of BMPR(
bone morphogenetic protein receptor )-1B or PRLR (
prolactin receptor)
gene SNP (
single nucleotide polymorphism)
lotus. The method comprises the following steps: extracting a small tailed han sheep
genome DNA (deoxyribonucleic acid); amplifying a sequence of SNP
lotus-containing BMPR-IB A746G or a sequence of SNP
lotus-containing PRLR
gene; judging an E2-C34T
mutant gene type of the BMPR-IB A746G or PRLR gene. The method disclosed by the invention can be applied to carrying out feeding and management according to difference of
milk secretion control gene types, and can be used for improving the
milk secretion amount, guaranteeing that a lamb has enough milk intake, improving the
survival rate and reducing the breeding economic loss. The method disclosed by the invention provides a molecular-level
technical support for predicating and molecularly selecting the
milk yield of small tailed han sheep; by applying the method disclosed by the invention, the
survival rate and development rate of the lambs are greatly improved, so that better breeding
economic benefits are produced, and therefore, the method has good application prospect.