Genome of low porcine backfat thickness and molecular marking method and breeding application

Abstract

The invention discloses a genome relates to a character of porcine backfat thickness and a molecular marking method and a breeding application. The genome is characterized in that a gene sequence SeqID No: 4 is a nucleotide sequence molecule of haplotype H4 present in a D-Loop region of a porcine mitochondrial genome, and pigs with the haplotype H4 are marked and determined by the molecular marking method. The beneficial effect of genome is as follows, 6-month-old sows with the haplotype H4 in the D-Loop region of the porcine mitochondrial gene have significantly lower backfat thickness thanthose with other haplotypes, indicating that the haplotype H4 is relevant to the character of low porcine backfat thickness. The haplotype H4 in the D-Loop region of the porcine mitochondrial genome is detected as a molecular breeding marker associated with low porcine backfat thickness, so that the method is simple and rapid, insusceptible to environment, and capable of achieving early breeding.

Description

Technical field: [0001] The invention belongs to the technical field of molecular genetics and breeding, and more specifically relates to a mitochondrial genome and a polymorphic site molecular marker method related to pig backfat thickness traits and its breeding application. Background technique: [0002] my country is a large pig-raising country, and the market demand for pork production and quality is increasing day by day. Increasing pork production and improving pork carcass quality have become the work that breeding scientists have been exploring for a long time. Early breeding efforts were mainly focused on phenotypic selection in pigs. With the continuous advancement of genomic work and the extensive development of genetic markers, molecular selection is gradually becoming a reliable and effective selection method. [0003] Backfat thickness is an important economic trait of pigs, which is affected by both genetic and environmental factors. Among them, fat depositi...

AI Technical Summary

Problems solved by technology

However, since indicators such as backfat thickness can only be measured after the animal grows up, on the one hand, it increases the cost of breeding, on the other hand, it prolongs the generation interval, and the genetic progress is slow.

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