Method for breeding new strain of Tibetan pigs and Meishan pigs

Abstract

The invention discloses a method for breeding a new strain of Tibetan pigs and Meishan pigs. The method mainly comprises the following steps that (1) excellent Tibetan boars are made to be cross-bred with excellent Meishan sows to produce a generation F1, wherein the excellent Tibetan boars and the excellent Meishan sows are different in consanguinity; (2) boars and sows are selected from the generation F1 to be cross-bred with one another to produce a generation F2, wherein the boars and the sows selected from the generation F1 are different in both consanguinity of mothers and consanguinity of fathers; (3) individuals which are delicate in figure and have more effective nipples are selected from a high-yield family and a large category of the generation F2 and are set aside for seeds; (4) the step (3) is repeated until the pigs are basically uniform in figure and appearance, the genetic background is stable, and the new strain of the Tibetan pigs and the Meishan pigs is bred. The Tibetan and Meishan pigs bred through the method have the advantages of being delicate in head figure, free of winkles, straight in back and waist, and good in fertility; the litter size of a first farrowing sow can reach eleven, the litter size of the multiparity can reach twelve, and the breeding rate in 60 days can reach 92%; the meat quality is tender and smooth, meat flavor is delicious, and nutrient is rich.

Description

technical field

[0001] The invention belongs to the technical field of breeding, and in particular relates to a method for cultivating a new strain of Tibetan plum pig. Background technique

[0002] Tibetan pig is a typical high-altitude pig breed, which can adapt to high-altitude low-oxygen environment. It has the characteristics of high-cold tolerance, strong stress resistance, delicious meat, thick and long mane, etc. It is an important breed resource for the development of pigs in high-altitude areas in my country. However, Tibetan pigs have disadvantages such as small size, slow growth, and few litters.

[0003] Meishan pig is a strain of Taihu pig, an excellent local breed in my country. It is famous for its high fecundity and delicious meat quality. It is an excellent parent of economic hybridization and breeding of new varieties in genetic resources. Meishan pigs have the characteristics of small size, early maturity, high fecundity, strong lactation ability, and ...

Examples

Embodiment

[0016] A breeding method for a new line of Tibetan plum pigs, comprising the following steps:

[0017] (1) Crossbreed excellent Tibetan boars and excellent Meishan sows with different ancestry to produce F1 generation.

[0018] (2) In the F1 generation, male and female pigs with different fathers and mothers are selected for mating to produce F2 generation.

[0019] (3) In the F2 high-yielding families and large litters, select individuals with handsome body and large number of effective teats to keep seeds.

[0020] (4) Repeat step (3) until the body shape and appearance are basically the same, the genetic background is stable, and a new strain of Tibetan plum is bred.

[0021] The specific characteristics of the new strain of Tibetan plum cultivated by the present invention are as follows: head shape is delicate, no wrinkle, back and waist are straight, good fecundity, litter size of primiparous sows can reach 11, multiparous 12, and 60-day breeding rate Up to 92%; the mea...

technical field

[0001] The invention belongs to the technical field of breeding, and in particular relates to a method for cultivating a new strain of Tibetan plum pig. Background technique

[0002] Tibetan pig is a typical high-altitude pig breed, which can adapt to high-altitude low-oxygen environment. It has the characteristics of high-cold tolerance, strong stress resistance, delicious meat, thick and long mane, etc. It is an important breed resource for the development of pigs in high-altitude areas in my country. However, Tibetan pigs have disadvantages such as small size, slow growth, and few litters.

[0003] Meishan pig is a strain of Taihu pig, an excellent local breed in my country. It is famous for its high fecundity and delicious meat quality. It is an excellent parent of economic hybridization and breeding of new varieties in genetic resources. Meishan pigs have the characteristics of small size, early maturity, high fecundity, strong lactation ability, and ...

Examples

Embodiment

[0016] A breeding method for a new line of Tibetan plum pigs, comprising the following steps:

[0017] (1) Crossbreed excellent Tibetan boars and excellent Meishan sows with different ancestry to produce F1 generation.

[0018] (2) In the F1 generation, male and female pigs with different fathers and mothers are selected for mating to produce F2 generation.

[0019] (3) In the F2 high-yielding families and large litters, select individuals with handsome body and large number of effective teats to keep seeds.

[0020] (4) Repeat step (3) until the body shape and appearance are basically the same, the genetic background is stable, and a new strain of Tibetan plum is bred.

[0021] The specific characteristics of the new strain of Tibetan plum cultivated by the present invention are as follows: head shape is delicate, no wrinkle, back and waist are straight, good fecundity, litter size of primiparous sows can reach 11, multiparous 12, and 60-day breeding rate Up to 92%; the mea...