Breeding method for breeding pigs with high growth speed and high reproductive capacity

Abstract

The invention relates to the technical field of livestock breeding, and discloses a breeding method for breeding pigs with high growth speed and high reproductive capacity. The method comprises the following specific operation steps: S1, optimizing and purifying sows and boars through small-group closed breeding, and respectively establishing a French strain of sows and an American strain of boars; S2, taking boars of the American strain as male parents and sows of the French strain as female parents, or through positive and negative matings, breeding a first generation of breeding pig group. According to the breeding method for breeding pigs with high growth speed and high reproductive capacity, a stable basic group can be established through mutual positive and negative crosses and intercrosses of boars of the American strain and sows of the French strain, and closed breeding, a strain which is high in growth speed, high in lean meat percentage, and high in live piglet yield is bred as male parents, and a high-yield breeding group is established, so as to obtain breeding pigs with excellent characteristics of high piglet yield, excellent reproductive capacity, high growth speed, and high lean meat percentage; besides, the matching mode is simple and efficient, and the hybridization advantages are obvious, so that the breeding capacity of the pig breeding industry can be improved, and the market consumption demand is met.

Description

technical field [0001] The invention relates to the technical field of livestock breeding, in particular to a breeding method for breeding pigs with fast growth and high fecundity. Background technique [0002] Pork is one of the most important animal foods on the table and the most important source of animal protein for the general public. With the improvement of living standards, people's demand for pork has changed from quantity to quality, and the demand for lean meat has increased significantly. The breeding programs of breeding pigs in various countries in the world are also turning to improve the meat production performance of commercial pigs; [0003] Since the reform and opening up, my country's pig breeding has made great achievements. Using several major foreign breeds of lean meat pigs, such as large white pigs, landrace pigs, Duroc pigs and Hampshire pigs, etc., the local pigs in our country have been binary and mixed. Three-way hybridization, or the direct use ...

AI Technical Summary

Problems solved by technology

[0004] However, the existing breeding technology tends to one-sidedly pursue growth performance and lean meat percentage while ignoring the important index of intramuscular fat content. Traditional meat quality improvement methods mostly use Duroc pigs as the male parent and local pig breeds as the female parent for crossbreeding , although the intramuscular fat content of the hybrid F1 generation has increased, but the backfat is thick, the growth rate is slow, and the feed conversion rate is poor, which affects the fecundity of breeding pigs and the growth rate of commercial pigs, thereby prolonging the time for commercial pigs to be slaughtered. Therefore, the reduction in farming income