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Commercial strain method utilizing local pig breed to breed high-quality commercial pig

A matching system and commodity technology, applied in the field of producing high-quality commercial pigs, can solve the problems affecting the preservation effect of local pig breeds, the loss of germplasm resources, and the crisis of survival

Inactive Publication Date: 2010-10-13
SHANGHAI ELITE AGRI SCI TECH GROUP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conservation of Fengjing pig breeds is also facing problems. If it is purely static conservation and conservation for the sake of conservation, the conservation of the breed cannot be maintained only by the limited funds of the state. If it is not managed to be developed and utilized, it will Due to the inefficiency of breeding farms, they are facing survival crisis, which seriously affects the preservation effect of local pig breeds, and even leads to the loss of germplasm resources

Method used

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  • Commercial strain method utilizing local pig breed to breed high-quality commercial pig

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 Hybrid combination test and determination of combining ability

[0015] A crossbreeding combination test was carried out on three breeds of Pietrain pigs without the halothane recessive gene (CN 200910247308.5), Duroc pigs, and Fengjing pigs, and fattening experiments and slaughter tests were carried out on the crossbreed commercial pigs to determine each crossbreeding combination The combinations are shown in Table 1.

[0016] Table 1 Hybrid combination

[0017]

[0018] The experimental results show that A and B have similar crossing patterns, and the terminal female parents are the same; C and D have similar crossing patterns, the first female parents are the same, but the terminal male parents are different. From the point of view of the purpose of mating line breeding, it is mainly to improve the production efficiency of commercial pigs. Because the terminal female parent of A and B is a local pig breed, the lean meat rate of commercial...

Embodiment 2

[0022] Example 2 Improvement of this breed of Pietrain pig without halothane recessive gene

[0023] Based on the halothane-free recessive gene Pietrain pig herd obtained from the Chinese patent application CN 200910247308.5, a breeding group for the first male parent specialized strain of the Shennong matching line was constructed. There are 5 lineages in the breeding group, the number is about 100, and the ratio of male to female is 1:5. According to conventional breeding methods, carcass traits and meat quality traits were used as breeding indicators, combined with molecular breeding methods, the PCR-RFLPs method was used to detect the halothane gene and genotype of the Pietrain pig herd, and the Pietrain pigs of the HalNHalN genotype were selected. Finally, the Pietrain pig herd without halothane recessive gene was selected and bred with high lean meat rate, good meat quality traits, and consistent body shape and appearance, which greatly improved the overall comprehensive...

Embodiment 3

[0025] Example 3 The Breeding Improvement of This Breed of Fengjing Pig

[0026] About 120 Fengjing pigs were selected, with a male-to-female ratio of 1:5, and a specialized breeding population for the first female parent of the Shanghai No. 1 matching line was established. Conventional breeding methods were used to select reproductive performance and meat quality traits as breeding indicators for this breed. education. Finally, a group with high reproductive rate, excellent meat quality, good maternal nature, stress resistance and rough feeding tolerance will be formed. Among them, there are more than 300 basic sows, more than 6 bloodlines, and the average litter size of multiparous sows is more than 15. The daily weight gain is above 400g / d, the lean meat rate is above 45%, and the intramuscular fat content is above 2.5%.

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Abstract

The invention discloses a commercial strain method utilizing local pig breeds to breed high-quality commercial pigs, comprising the following steps: A) utilizing a freon-free recessive gene Pietran as a first male parent of the commercial strain and Fengjing pig as a first female parent of the commercial strain, hybriding to obtain a Pietran-Fengjing cross-bred pig; and B) selecting a Duroc as a second male parent of the commercial strain and the Pietran-Fengjing cross-bred pig as a terminal female parent, hybriding to obtain the high-quality commercial pig. The average farrowing number of the first female parent of the commercial strain is not less than 14, the growth rate of the high-quality commercial pig can be up to more than 600 g / d, the lean meat percentage is more than 60%, the feed conversion rate is not more than 3.5, the intramuscular fat content is more than 2.5%, and the high-quality commercial pig has no PSE meat.

Description

technical field [0001] The invention belongs to the technical field of stockbreeding and breeding, in particular to a method for constructing and breeding matching lines for producing high-quality commercial pigs by using local pig breed resources. Background technique [0002] From the 1980s to the early 1990s, the pig industry in Western countries such as the United States and the United Kingdom mainly used Large White pigs, Landrace pigs, and Duroc pigs as breeding pigs for the production of "foreign three-yuan" meat pigs. After the emergence of self-matching lines, short In a few years, 80% of the market share of pig production has been occupied by this new production model. Compared with existing pig breeds, matching pigs have greater variety advantages. Traditional high-quality pig breeds often only show one or two advantages such as high lean meat percentage and fast growth, while matching pigs can embody them in a concentrated manner. Multiple advantages. Jean NAVE...

Claims

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Application Information

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IPC IPC(8): A01K67/02A01K67/027
Inventor 谈永松胡志刚黄瑞华王林云曹建国涂荣剑涂尾龙
Owner SHANGHAI ELITE AGRI SCI TECH GROUP
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