Specialized strain breeding method for commercial black pigs

A technology for supporting systems and commodities, applied in the field of animal husbandry, can solve the problems of the average lean meat rate and growth rate of the second female parent, affecting the production efficiency of commercial pigs, etc.

Inactive Publication Date: 2014-04-30
SHANGHAI ACAD OF AGRI SCI +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the technical problems that the lean meat rate and growth rate of the second female parent used in the existing mating lines are very general, and the specialized lines do not have specific outstanding traits, which affect the production efficiency of commercial pigs, and the purpose is to provide a commercial pig The breeding method of the matching line of black pigs (abbreviated as Subei No. 1 matching line) includes the following steps:

Method used

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  • Specialized strain breeding method for commercial black pigs
  • Specialized strain breeding method for commercial black pigs
  • Specialized strain breeding method for commercial black pigs

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Embodiment 1 hybrid combination test and combining ability determination

[0015] There are 80 pigs of Pietrain pigs (invention patent ZL200910247308.5) and Duroc pigs with no halothane recessive gene, and the ratio of male to female is 3:5. Since Suhuai pigs should be used as the female parent in the hybridization process, Suhuai pigs are set at the position of the female parent in the combination of matching lines. The Suhuai pig group is all sows, 200 heads. The hybrid combination test was carried out according to the hybrid combination mode and quantity shown in Table 1. The three breeds of pigs were fed according to the conventional method of each pig group, and the hybrid pigs were subjected to fattening experiments and slaughter tests to determine the combining ability of each hybrid combination.

[0016] Table 1 hybrid combination

[0017]

[0018]

[0019] The experimental results show that A and B have similar hybridization patterns, but the terminal fe...

Embodiment 2

[0022] Example 2 Specialized strain of Pietrain pig without halothane recessive gene with high lean meat percentage

[0023] Based on the Pietrain pig herd without the halothane recessive gene selected by the Chinese invention patent ZL200910247308.5, a breeding group for the specialized strain of Pietrain pig was constructed. The selected individual boars have no genetic relationship, and there is no genetic relationship between sow families, and those with genetic defects in individuals and ancestors are not eligible for selection. There are 5 lineages in the breeding group, the number is about 120, and the ratio of male to female is 1:5.

[0024] 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: litter selection at the age of 20 days; elimination of poorly developed individuals at the age of 2 m...

Embodiment 3

[0028] Example 3 High growth rate Duroc pig specialized strain

[0029] On the basis of Duroc pigs, a breeding group of Duroc pig specialized strains is established. The selected individual boars are not related, and the sows are not related to each other. Individuals and ancestors with genetic defects are not allowed to be selected. There are 5 lineages in the breeding group, the number is about 120, and the ratio of male to female is 1:5.

[0030] 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: litter selection at the age of 20 days; elimination of poorly developed individuals at the age of 2 months; selection based on appearance at the age of 4 months, with a selection ratio of 70%; selection at the age of 6 months based on weight, body size, and physical fitness The ratio is 60%. The final sel...

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Abstract

The invention discloses a specialized strain breeding method for commercial black pigs. The method includes the following steps that first, fluothane-free recessive gene Pietrain pigs serve as first male parents for the specialized strain, Duroc pigs serve as first female parents for the specialized strain, and Pietrain * Duroc cross-bred pigs are obtained through cross breeding; second, the Pietrain * Duroc cross-bred pigs are selected as second male parents for the specialized strain, Suhuai pigs serve as terminal female parents, and good-quality commercial black pigs are obtained through cross breeding. According to the method, the average litter size of multiparity sows of the terminal female parents for the specialized strain is not smaller than 14, the average daily weight gain of the good-quality commercial black pigs reaches more than 710 g/d, the lean meat percentage of the good-quality commercial black pigs reaches more than 70 percent, the feed conversion ratio is as small as 2.54, the fat percentage in muscles reaches as high as 2.5 percentage, and no PSE meat exists.

Description

technical field [0001] The invention belongs to the technical field of animal husbandry, in particular to a breeding method for a matching line for producing high-quality commercial black pigs by using local pig breed resources-Suhuai pigs to construct and breed. Background technique [0002] In the past two decades, most of the main breeds in the pig industry worldwide are white pigs. White pigs are famous for their fast growth, high feed conversion rate and high lean meat rate, but their low reproductive Rativity and poor meat quality are the main obstacles to its development. Today, with the ever-changing living standards, people's demand for pork has changed from quantity demand to quality demand, and more attention is paid to the quality of meat. Because of its tender and delicious meat, fat but not greasy, black pig has been brought back to people's table. [0003] In the 1980s and early 1990s, the United States, the United Kingdom and other countries mainly used Lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/027
Inventor 谈永松王良军羊兆洪刘元华
Owner SHANGHAI ACAD OF AGRI SCI
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