Novel Zaozhuang black pig breed protecting and selecting method

Abstract

The invention belongs to the field of animal genetic breeding and animal feeding and relates to a novel Zaozhuang black pig breed protecting and selecting method. The method comprises the specific steps of choosing excellent local Zaozhuang black pig individuals or family lines to form basic groups at first, optimizing and refining parent lines through small-group locked breeding, choosing sows with obvious varietal characteristics and excellent expression from the optimized and refined parent lines as maternal line female parents, using Laiwu black boars as maternal line male parents, hybridizing and cultivating laignes binary sows, finally using Duroc boars as terminal male parents and hybridizing the Duroc boars with the laignes binary sows to cultivate novel Zaozhuang black pigs. The cultivated novel Zaozhuang black pigs remain the excellent characteristics of local black pigs and have the advantages of Laiwu black pigs and the advantages of Duroc variety boars. The invention further provides pig feed suitable for the novel Zaozhuang black pigs in the front growth development period and with the weight between 10kg and 90kg.

Description

technical field [0001] The invention relates to a breed conservation and breeding method for Xinzaozhuang black-covered pigs, belonging to the fields of animal genetics and breeding and animal feeding. Background technique [0002] Zaozhuang black cover pigs are bred in various villages and towns in Zaozhuang area, and belong to local excellent breeds. It is compact in size, gentle in motherhood, strong in fecundity, resistant to roughage, and strong in stress resistance. Local farmers often set up simple small sheds outdoors to raise it, and it is deeply loved by the majority of farmers. In recent years, with the improvement of people's living standards, people have higher and higher requirements for the quantity and quality of meat products. Not only does it require an abundant supply of pork, but also from the perspective of nutritional needs and physical health, people prefer meat products containing meat. Lean meat with low cholesterol; From the perspective of the deve...

AI Technical Summary

Problems solved by technology

The disadvantage is that the scale is small, the original selection intensity cannot be reached, and the selection progress of each generation is reduced; and a large number of breeding pigs need to be replaced every year, requiring a large core group of breeding pigs, and the cost is high; and practice has proved that the genetic basis is narrow, Long-term latch-up tends to cause inbreeding degeneration. The first few generations show breeding progress, and then weaken

Images