Selection method of Taihu pigs

A technology for Taihu pigs and rice pigs, which is applied in animal husbandry and other fields, can solve the problems of long breeding period, easy overlap of recessive genes, and decline in stress resistance and adaptability of bred varieties, so as to increase the number of live pigs and protect The effect of heritability

Active Publication Date: 2015-01-07
JIANGSU POLYTECHNIC COLLEGE OF AGRI & FORESTRY
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AI Technical Summary

Problems solved by technology

Long-term hybridization with imported varieties from abroad will reduce the stress resistance and adaptability of the cultivated varieties, and the piglets will be prone to diseases;

Method used

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  • Selection method of Taihu pigs
  • Selection method of Taihu pigs
  • Selection method of Taihu pigs

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Experimental program
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Embodiment

[0013] Such as figure 1 Shown, a kind of Taihu pig breeding method of the present invention comprises:

[0014] 1. Parent selection and cultivation

[0015] Erhualian pigs, Meishan pigs, Fengjing pigs and Mi pigs in the Taihu Lake Basin were selected as parents. It is required to select a relatively pure individual breed, whose appearance conforms to the characteristics of each breed, and the average litter size of the parents is more than 14, and the body is healthy.

[0016] 2. Crossbreeding

[0017] Reciprocal crossing of Mi pigs and Meishan pigs produces the male and female lines of Meimi; reciprocal crossing of Fengjing pigs and Erhualian pigs produces male and female lines of Erfeng; crossing the male and female lines of Meimi and Erfeng, The four-line descendants of Meimi Erfeng were produced.

[0018] 3. Multiply and promote

[0019] Establish the Meimi Erfeng breeding line, start breeding from the zero generation, and select healthy and disease-free offspring wit...

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Abstract

The invention discloses a selection method of Taihu pigs and belongs to the field of animal breeding. Reciprocal cross is performed on measly pigs, Meishan pigs, Fengjing pigs and Erhualian pigs from the TaiHu lake area, thus heterosis is expanded, a breeding line of Meishan pig-measly pig-Erhualian pig-Fengjing pig is established, and a breed which is high in reproductive performance and stable in heritability is selected. Compared with the Taihu pigs without hybrid cross such as Meishan pigs, the Taihu pigs subjected to the reciprocal cross are high in total number born and number born alive, the defect brought by selfing of the Taihu pigs is overcome, the heritability of the reproductive performance of local pigs in China is maintained, and a special high-quality female parent specialized line is provided for pig production and breeding industry.

Description

technical field [0001] The invention relates to the field of animal reproduction and breeding, in particular to a method for breeding Taihu pigs. Background technique [0002] At present, the methods of cultivating pig breeds in China are mostly to introduce foreign pig breeds with fast growth and high feed remuneration to hybridize with local breeds in my country; or to carry out the breeding of local breeds. Taihu pig is the pig breed with the largest number of litters in the world. It is often used as the female parent of hybridization. The main breeds include Meishan pig, Fengjing pig, and Erhualian pig. Long-term hybridization with imported varieties from abroad will reduce the stress resistance and adaptability of the cultivated varieties, and the piglets will be prone to diseases; while using this variety for breeding, the breeding cycle is long, and the recessive genes are easy to overlap during the breeding process, which affects the breeding. The variety is health...

Claims

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 陈军
Owner JIANGSU POLYTECHNIC COLLEGE OF AGRI & FORESTRY
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