Seed selection method for new double muscle rump strains of large Yorkshire pigs

Abstract

The invention discloses a seed selection method for new double muscle rump strains of large Yorkshire pigs. The seed selection method comprises the following steps of 1, selecting individuals with obvious double muscle rump characters from a large Yorkshire pig swinery in a pig farm to form seed selection core group serving as a generation zero; 2, performing hybridization on male large Yorkshire pigs and female large Yorkshire pigs of the generation zero to produce swinery of the next generation, and selecting individuals with obvious double muscle rump characters from the swinery of the next generation to form a first-generation seed selection core group; 3, performing hybridization on standby male and female pigs of the first-generation seed selection large Yorkshire pigs to produce swinery of the next generation, and selecting individuals with obvious double muscle rump characters from the swinery of the next generation to be a second-generation seed selection core group; 4, repeating the step 3, and performing seed selection to obtain the new double muscle rump strains of the large Yorkshire pigs which have the appearance of double muscle rump characters on and can be stably genetic after 3-4 generations, wherein one generation is generated in one year. The new strains of the pigs have the advantages of high growth speed, high feed conversion rate, much lean, high meat quality, high reproductive capacity and the like.

Description

technical field [0001] The invention relates to the technical field of stockbreeding and breeding, in particular to a breeding method for a new line of large Yorkshire pig with double-muscled buttocks. Background technique [0002] The Great Yorkshire pig, also known as the Large White pig, originated in the United Kingdom and is one of the most famous and widely distributed lean-meat pig breeds in the world. Because of its large litter size, high lactation ability, and strong maternal instinct, it is often used as the first round of hybrid female parent in the production of commercial lean pigs at home and abroad. [0003] Due to the large eye muscle area of ​​double-muscle buttock pigs and well-developed buttock muscles, the carcass has a high lean meat percentage. Therefore, it has attracted much attention in the process of breeding lean pigs in recent years. After Belgium bred the double-muscled hip breed - Pietrain pig, the United States, Canada and other developed co...

AI Technical Summary

Problems solved by technology

However, due to the small number of double-muscled buttocks imported from breeding pig farms in Jiangxi Province, it is only a drop in the bucket for my country, a big pig raising and pork consumption country.