Breeding method for five-line crossbreeding mating lean type boars

A technology of lean meat and breeding pigs, which can be applied in animal husbandry and other fields, and can solve the problems of less breeding research

Active Publication Date: 2019-03-15
SOUTH CHINA AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous optimization and development of matching lines, it is found that compared with the three-line and four-line matching pig breeding systems, the five-line breeding system can make full use of the heterosis of the male parent, female parent and individual, and the production efficiency and economic benefits are bet...

Method used

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  • Breeding method for five-line crossbreeding mating lean type boars
  • Breeding method for five-line crossbreeding mating lean type boars
  • Breeding method for five-line crossbreeding mating lean type boars

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Pietrain pig specialized strain (S11 line) of high growth performance of embodiment 1

[0035] Based on the HN111 strain (derived from the French Hybrids company and Beijing Pig Breeding Center) in the "Huanong Wenshi No. 1 pig matching line" approved by China's new breed (matching line), combined with the newly introduced independent bloodline from the French Hybrids company , to construct a breeding group of specialized strains of Pietrain pigs. The breeding group has 19 boars, 325 sows and 9 independent bloodlines.

[0036] The male and female pigs in the breeding group were mated and littered, and the piglets were selected individually and combined with siblings and half-sibs for determination. In the primary selection stage, the independent elimination method is first used to eliminate breeding pigs that do not meet the breed standards, have genetic defects, poor growth and development, dysplasia or deformity of reproductive organs, severe limb and foot diseases, ...

Embodiment 2

[0040] Example 2 Duroc pig specialized strain (S22 line) with high growth performance

[0041] Based on the Duroc pigs imported from Canada DGI Company, a breeding group of Duroc pig specialized strains was constructed. The breeding group consists of 30 boars, 545 sows and 10 independent bloodlines.

[0042] The male and female pigs in the breeding group were mated and littered, and the piglets were selected individually and combined with siblings and half-sibs for determination. In the primary selection stage, the independent elimination method is first used to eliminate breeding pigs that do not meet the breed standards, have genetic defects, poor growth and development, dysplasia or deformity of reproductive organs, severe limb and foot diseases, and body shape score below the minimum standard, etc. that do not meet the breeding requirements; The final selection stage is mainly based on the following comprehensive selection index (Bd) formula for selection and retention, c...

Embodiment 3

[0046] Example 3 High Reproductive Performance Landrace Pig Specialized Strain (W51 Line)

[0047] Based on the HN151 strain in the "Huanong Wenshi Ι" matching line approved by China's new breed (matching line), the bloodlines introduced from Danish Breeding Company and Guangxi Kexinyuan Breeding Pig Company were combined to construct a special line selection for Landrace pigs. Education group. The breeding group has 35 boars, 647 sows and 10 independent bloodlines.

[0048] The male and female pigs in the breeding group were mated and littered, and the piglets were selected individually and combined with siblings and half-sibs for determination. First go through the following preliminary selection stage: Firstly, use the independent elimination method to eliminate non-conforming breeds that do not meet the breed standards, have genetic defects, poor growth and development, reproductive organ dysplasia or deformity, severe limb and foot diseases, and body shape scores below t...

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Abstract

The invention relates to the field of livestock breeding, in particular to a breeding method for five-line crossbreeding mating lean type boars. The method includes the following steps that S1, Pietrain pigs are selected as paternal line male parents, Duroc pigs are selected as maternal line female parents, and Pietrain*Duroc pigs are obtained through crossbreeding to be used as terminal male parents; S2, Landrace pigs are selected as maternal line male parents, large white pigs are selected as maternal line female parents, and Landrace*large white pigs are obtained through crossbreeding to beused as maternal line progenitor female parents; S3, another Landrace pigs are selected as progenitor male parents to be crossbred with the Landrace*large white pigs obtained the second step, so thatLandrace*(Landrace*large white) pigs are obtained and used as terminal female parents; S4, the Landrace*large white pigs are crossbred with the Landrace*(Landrace*large white) pigs are crossbred, sothat five-line crossbreeding mating lean type boars are obtained. The commercial pork pigs bred through the method are uniform in appearance and high and long in body; the heads of the pigs are in a medium size, and the mouths of the pigs have a medium length and are wide; the backs and waists are flat and straight, bellies are slightly curled, and four limbs are stout; the economic body weight islarge in the market, and meat quality is excellent; production efficiency is high.

Description

technical field [0001] The invention relates to the field of stockbreeding and breeding, in particular to a method for breeding lean-meat breeding pigs matched with five lines of hybridization. Background technique [0002] The production of commercial pigs needs to balance efficiency, benefit and quality. Among them, high fecundity, suitable for large-scale marketing, high feed conversion rate, high lean meat rate, fast growth, and good meat quality are the main goals of pig breeding at present and in the future for a long time, and are suitable for high-yield and high-efficiency large-scale breeding. And high-quality varieties are more likely to be favored by the market. Since traditional high-quality pig breeds can only embody two advantages such as high lean meat rate and fast growth rate, it is difficult to achieve the collection of many advantages, while the supporting system can embody multiple advantages in a concentrated manner. Therefore, matching pigs often beco...

Claims

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02A01K2227/108
Inventor 吴珍芳罗旭芳王青来蔡更元刘珍云刘敬顺杨杰郑恩琴
Owner SOUTH CHINA AGRI UNIV
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