Mating system selective breeding method for producing high-quality commercial pig

A technology for supporting systems and commodities, applied in animal husbandry and other directions, can solve the problem of underutilization of Pietrain pigs

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

AI Technical Summary

Problems solved by technology

However, non-stressed Pietrain pigs are underutilized

Method used

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  • Mating system selective breeding method for producing high-quality commercial pig
  • Mating system selective breeding method for producing 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 test was carried out on three breeds of Pietrain pigs without the halothane recessive gene (CN 200910247308.5), Duroc pigs, and Shannon I pigs (CN 200910247537.7), and fattening tests and slaughter measurements were carried out on the crossbred commercial pigs , in order to determine the combining ability between each hybrid combination, the combination method is shown in Table 1.

[0016] Table 1 Hybrid combination

[0017]

[0018] The experimental results show that A and B have similar hybridization patterns, but the terminal female parents are the same, and C and D have similar hybridization patterns, but the terminal female parents are different. According to the purpose of breeding matching lines is to improve the production efficiency of commercial pigs, including the reproductive rate of the terminal female parent and the production performance o...

Embodiment 2

[0021] Example 2 Improvement of this breed of Pietrain pig without halothane recessive gene

[0022] 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. Using conventional breeding methods, taking carcass performance and meat quality traits as breeding indicators, combined with molecular breeding methods, the PCR-RFLPs method was used to detect the halothane gene and genotype of Pietrain pigs, and the Pietrain pigs with HalNHalN genotype were selected. Finally, the Pietrain pig herd with no halothane recessive gene was selected and bred with high lean meat rate, good meat quality traits, and consistent body shape, which greatly improved the overall comprehensive performance of the herd.

[...

Embodiment 3

[0024] Example 3 Improvement of this breed of Duroc pigs

[0025] A total of 120 Duroc pigs were selected, with a male-to-female ratio of 1:5, to form a breeding group for the first female specialized strain of the Shannong matching line. Then use conventional breeding methods to select and breed this variety, and select and match the population based on indicators such as growth rate, feed utilization rate, and carcass lean meat percentage, and finally obtain fast growth speed, good feed utilization rate, and high carcass lean meat percentage. Among them, the average litter size of multiparous sows is not less than 10, the lean meat rate is over 60%, and the average daily gain is over 700g.

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Abstract

The invention discloses a mating system selective breeding method for producing a high-quality commercial pig, comprising the following steps: A) taking halothane-free recessive gene Pietrain as a first male parent of a mating system, taking Duroc as a first female parent of the mating system, and hybridizing to obtain Pierre cross-bred pig; and B) selecting the Pierre cross-bred pig as a second male parent of the mating system, taking Shannon No. I pig as a terminal female parent, and hybridizing to obtain the high-quality commercial pig. The average litter size of the pluriparous sows of the mating system terminal female parent of the invention is not less than 12, the growth speed of the high-quality commercial pig is up to above 700 g / d, lean meat percentage is above 62%, feed conversion ratio is not higher than 3.2, intramuscular fat content is not lower than 2.5%, and no PSE meat exists.

Description

technical field [0001] The invention belongs to the technical field of stockbreeding and breeding, in particular to a breeding method for matching lines for producing high-quality commercial pigs. 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 NAVEAV of the French Academy of Sciences used Chinese Ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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