Breeding method for five-line crossbreeding mating lean type boars

Abstract

The invention relates to the field of livestock breeding, in particular to a breeding method for five-line crossbreeding mating lean type boars. The method includes the following steps that S1, Pietrain pigs are selected as paternal line male parents, Duroc pigs are selected as maternal line female parents, and Pietrain*Duroc pigs are obtained through crossbreeding to be used as terminal male parents; S2, Landrace pigs are selected as maternal line male parents, large white pigs are selected as maternal line female parents, and Landrace*large white pigs are obtained through crossbreeding to beused as maternal line progenitor female parents; S3, another Landrace pigs are selected as progenitor male parents to be crossbred with the Landrace*large white pigs obtained the second step, so thatLandrace*(Landrace*large white) pigs are obtained and used as terminal female parents; S4, the Landrace*large white pigs are crossbred with the Landrace*(Landrace*large white) pigs are crossbred, sothat five-line crossbreeding mating lean type boars are obtained. The commercial pork pigs bred through the method are uniform in appearance and high and long in body; the heads of the pigs are in a medium size, and the mouths of the pigs have a medium length and are wide; the backs and waists are flat and straight, bellies are slightly curled, and four limbs are stout; the economic body weight islarge in the market, and meat quality is excellent; production efficiency is high.

Description

technical field [0001] The invention relates to the field of stockbreeding and breeding, in particular to a method for breeding lean-meat breeding pigs matched with five lines of hybridization. Background technique [0002] The production of commercial pigs needs to balance efficiency, benefit and quality. Among them, high fecundity, suitable for large-scale marketing, high feed conversion rate, high lean meat rate, fast growth, and good meat quality are the main goals of pig breeding at present and in the future for a long time, and are suitable for high-yield and high-efficiency large-scale breeding. And high-quality varieties are more likely to be favored by the market. Since traditional high-quality pig breeds can only embody two advantages such as high lean meat rate and fast growth rate, it is difficult to achieve the collection of many advantages, while the supporting system can embody multiple advantages in a concentrated manner. Therefore, matching pigs often beco...

AI Technical Summary

Problems solved by technology

With the continuous optimization and development of matching lines, it is found that compared with the three-line and four-line matching pig breeding systems, the five-line breeding system can make full use of the heterosis of the male parent, female parent and individual, and the production efficiency and economic benefits are better. High, it is adopted by foreign advanced breeding companies, and it is also the development trend of the matching line. However, there are few researches on the breeding of lean-meat five-line matching commercial pork pigs in my country. Based on this, it is urgent to invent a five-line matching lean-meat breeding pig. Breeding method

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