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Breeding method of a new breed of Jinfen white pig

A cultivation method and technology for new varieties, applied in animal husbandry and other directions, can solve the problem of low selection accuracy, and achieve the effect of simple seed production mode, convenient for large-scale popularization and application and industrial production, and suitable overall performance.

Active Publication Date: 2016-08-24
SHANXI AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, using traditional breeding methods, the selection accuracy is also low

Method used

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  • Breeding method of a new breed of Jinfen white pig
  • Breeding method of a new breed of Jinfen white pig
  • Breeding method of a new breed of Jinfen white pig

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this example, the hybridization method was adopted, and on the basis of preserving the excellent genetic traits of the horse body pigs, the high yield genes of Erhualian pigs and the high growth rate genes of Landrace pigs were further incorporated. The high-yielding maternal line with fast speed and good meat quality provides excellent high-yielding hybrid female parents for the production of high-efficiency and high-quality hybrid commercial pigs.

[0038] The resistance and farrowing performance of the Shanxi local pig stallion pig is very outstanding, and the number of sows born can reach 14.0. In this example, 4 unrelated boars of foreign Danish Landrace pigs were selected as the male parent, and 40 horse-body sows were selected as the female parent for crossbreeding to obtain "Changma" hybrid pigs. The offspring of "Changma" hybrid pigs 40 sows were selected for backcrossing.

[0039] The Chinese native pig breed Erhualian pig (Taihu pig) is the pig breed with the ...

Embodiment 2

[0064] According to the breeding goal, select the bred Shanxi white pig high-yielding female line and Canadian line Great White pig as the cross-bred parents. F1 generations are produced through forward and backward crosses, and subsequent generations are selected after cross-crossing.

[0065] 1. The formation of the basic group.

[0066] 40 female sows of Shanxi white pigs with high yield and 8 boars (6 pedigrees) were selected for cross-crossing with Canadian white pigs. 12 female sows with high yield of Shanxi white pigs and 4 boars of British white pigs ( 4 pedigrees) cross, the resulting hybrid population is cross-crossed to establish a basic group (generation 0). The basic group contains 6.25% of Mashen pedigree, 3.125% of Erhualian pedigree, 40.625% of Landrace pedigree and 50 of Great White pedigree %. The population size is 24 males and 118 females.

[0067] There are a total of 12 pedigrees in the basic group, consisting of 8 Canadian white boar pedigrees from Datong Cit...

Embodiment 3

[0102] In this example, starting from the 4th generation, a supporting hybridization experiment and pilot promotion were carried out. Considering that the parents of Jinfen white pigs contain landrace and large white blood, the Jinfen white pig sow is the female parent and the Duroc boar is the male parent. Cross-breeding experiments are carried out to breed Dujin binary commercial pigs, and Jinfen white pig pure breed is used as the control Group to study the heterosis and production performance of hybrid commercial pigs. In this example, the fattening performance and carcass quality of the obtained Dujin binary commercial pigs were measured at the same time.

[0103] Table 14 lists the finishing performance of Du Jin binary commercial pigs. It can be seen from Table 14 that Du Jin binary commercial pigs have a daily weight gain of 878.11 g / d at the stage of 30-100 kg, a daily weight of 100 kg at 165.40 days, and a 2.70 kg weight gain per kg. The daily gain is 85.09 higher tha...

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Abstract

The invention discloses a culture method of a new Shanxi white pig variety. The method is characterized in that a high-farrowing maternal line of Shanxi white pig cultured by using Mashen pig (a variety of pig), Erhualian pig (a variety of pig) and Denmark introduced Landrace as parents is treated as a female parent, and a large white is treated as a male parent; the female parent and the male parent are subjected to intersect-breeding and fundamental group formation; the group transgenerational selective breeding method is performed; the new Shanxi white pig variety is successfully selectively bred through six generations. The Shanxi white pig is rich in source and stable in heritability, and contains 6.25% descent of Mashen pig, 3.125% descent of Erhualian pig, 50% descent of large white, and 40.625% descent of Landrace. The new Shanxi white pig variety cultured by the method is high in reproduction performance, fast to grow, high in lean meat percentage, high in resistance to disease, and high in feed conversion.

Description

Technical field [0001] The invention relates to a method for cultivating a new breed of pig, in particular to a method for cultivating a new breed of pig by taking Shanxi white pig high-producing piglets as the female parent and large white pig as the male parent. Background technique [0002] The pig industry is the pillar industry of my country's animal husbandry, and it plays an important role in promoting agricultural development and increasing farmers' income. With the advancement of pig breeding technology and the diversification of the market, the cultivation and supporting utilization of specialized pig breeds has become the leading direction for the development of the world's pig industry. [0003] For a long time, the breed that played a leading role in the production of live pigs in my country has always been foreign pig breeds, but its low litter size, low stress resistance and poor meat quality are one of the main reasons for the low level of live pig production in my ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/02A01K67/027
CPCA01K67/02
Inventor 郭晓红高鹏飞曹果清李步高周忠孝
Owner SHANXI AGRI UNIV
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