Lean meat type pig breeding method

Abstract

The invention relates to a pig breeding method, in particular to a lean meat type pig breeding method. The lean meat type pig breeding method comprises the following steps: hybridizing Southern Yunnan small-ear pigs with Jinhua pigs to produce first generation of hybrid lean meat type pigs; hybridizing the first generation of hybrid lean meat type pigs with Bama miniature pigs to produce second generation of hybrid lean meat type pigs, hybridizing the second generation of hybrid lean meat type pigs with Southern Yunnan small-ear pigs to produce third generation of hybrid lean meat type pigs, hybridizing the third generation of hybrid lean meat type pigs with Jinhua pigs to produce fourth generation of hybrid lean meat type pigs, mutually hybridizing the fourth generation of hybrid lean meat type pigs as first generation of commercial pigs, mutually hybridizing the first generation of commercial pigs as second generation of commercial pigs, performing population reproduction on the second generation of commercial pigs and taking produced lean meat type pigs as commercial lean meat type pigs for feeding; the commercial lean meat type pigs bred through the steps are gray black in whole body hair, straight in nose, straight in back and waist, longer in trunk, full in hindquarter, robust in limb, strong in physique and mild in temperament, have the excellent characteristics of being strong in disease resistance, quick in growth, high in piglet productivity, high in lean meat percentage, good in meat quality, resistant to cold and heat and the like.

Description

technical field [0001] The invention relates to a pig breeding method, in particular to a lean pig breeding method. Background technique [0002] With the improvement of people's living standards and the high-speed growth of the pig industry for more than ten years, the development of pig production in my country has basically ended the development stage of relying on quantity expansion and entered the development stage of improving quality. In the 1980s, it was noticed that the trend of social consumption of pork is lean meat, and pigs are the livestock with the strongest ability to accumulate fat. Lard used to be people's favorite food and the main pursuit of food. The carcass lean meat rate of lean pigs after slaughter is relatively high, and the carcass lean meat rate of original local pig breeds in my country generally does not exceed 45%. Lean meat is the main source of animal protein in people's food, and it has been paid more and more attention to. Therefore, the dev...

AI Technical Summary

Problems solved by technology

[0003] Diannan small-eared pigs are produced in Mengla, Ruili, Yingjiang and other places in Yunnan Province. They have short bodies, erect or outwardly stretched ears, broad back and waist, full body, thin skin and thin hair. They are large in number and widely distributed. Humid and hot climate, it has the characteristics of early maturity and easy fattening, high slaughter rate, thin skin and good meat quality, but the litter performance is slightly lower, most of the teats are 5 pairs, the lactation ability is low, the number of litters can not be guaranteed, and the temperament is wild. Slower growth rate and lower feed utilization

[0004] Jinhua pigs have excellent performances such as early maturity, good meat quality, and high reproductive rate. The meat-to-feed ratio is 1:3.5-3.68, but they have small physique, low birth weight, slow growth, and low lean meat rate (lean meat ratio 40%~ 45%, the fat thickness is 3.4~3.8cm, the skin thickness is 0.34~0.38cm), and the hind legs are not plump enough (leg hip ratio 30%~32%)