A kind of breeding method of lean-meat breeding pigs matched with five-line hybridization

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: 2021-02-26
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 better. High, it is adopted by foreign advanced breeding companies, and it is also the development trend of the matching line. However, there are few researches on the breeding of lean-meat five-line matching commercial pork pigs in my country. Based on this, it is urgent to invent a five-line matching lean-meat breeding pig. Breeding method

Method used

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  • A kind of breeding method of lean-meat breeding pigs matched with five-line hybridization
  • A kind of breeding method of lean-meat breeding pigs matched with five-line hybridization
  • A kind of breeding method of lean-meat breeding pigs matched with five-line hybridization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Pietrain pig specialized strain (S11 line) of high growth performance of embodiment 1

[0036] 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.

[0037] 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

[0041] Example 2 Duroc pig specialized strain (S22 line) with high growth performance

[0042] 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.

[0043] 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

[0047] Example 3 High Reproductive Performance Landrace Pig Specialized Strain (W51 Line)

[0048] 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.

[0049] 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 primary selection stage: Firstly, use the independent elimination method to eliminate the breeds that do not meet the breed standards, have genetic defects, poor growth and development, reproductive organ dysplasia or deformity, serious limb and foot diseases, and body shape scores below the minimum sta...

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Abstract

The present invention relates to the field of stockbreeding and breeding, in particular to a method for breeding lean-meat breeding pigs matched with five-line hybridization, comprising the following steps: S1: selecting Pietrain pigs as the male parent of the paternal line, selecting Duroc pigs as the female parent of the male line, and crossing to obtain “Pi×Du” pigs were used as the terminal male parent; S2: Landrace pigs were selected as the maternal male parent, Large White pigs were selected as the female parent, and “Chang×Du” pigs were crossed to obtain the maternal grandparent female parent; S3: Another Landrace was selected The pig is used as the grandparent male parent to cross with the "long × large" pig obtained in step S2, and the "long × (long × large)" pig is obtained as the terminal female parent; S4: the "long × large" pig is combined with the "long × large" pig (Long×Big)” pigs were crossed to obtain lean-meat breeding pigs with five lines of crosses. The commercial pork pigs bred by this method have the same body shape and appearance, tall and long body; medium-large head, medium-length and wide mouth; 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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Patent Type & Authority Patents(China)
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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