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Breeding method of new strain pigs resistant to Escherichia coli f4ac infection

A technology of Escherichia coli and breeding methods, applied in the field of breeding new strains of pigs, can solve the problems of slow growth, low lean meat rate and slaughter rate of pigs, and achieve the effects of high lean meat rate, increased slaughter rate, and improved quality

Active Publication Date: 2019-07-02
广西柯新源原种猪有限责任公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing pigs resistant to E. coli F4ac infection grow slower and faster, and their lean meat rate and slaughter rate are low

Method used

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Embodiment Construction

[0027] In order to illustrate the technical solution of the present invention more clearly, the claims of the present invention will be further described in detail below in conjunction with specific embodiments and drawings. It should be understood that the following only shows some embodiments of the present invention, and therefore should not It is regarded as a limitation of the scope, and any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0028] The invention provides a method for cultivating a new strain of pigs infected with Escherichia coli F4ac, comprising the following steps:

[0029] The first stage:

[0030] The excellent individuals resistant to Escherichia coli F4ac infection were used as the female parent, and the excellent individuals from different families of the foreign lean breed Xinmei Duroc boars were used as the male parents for cro...

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Abstract

The invention provides a breeding method for new-variety pigs resistant to escherichia coli F4ac infection. The breeding method is used for new-variety pigs resistant to the escherichia coli F4ac infection and having the advantage of being resistant to the escherichia coli F4ac infection of pigs and also having the advantages of quick growth, high lean meat percentage and the like of a pig variety. The breeding method comprises the steps that sows resistant to the escherichia coli F4ac infection and new American Duroc boars are utilized to breed the first generation of sow core group; the first generation of sow core group are hybridized with boars resistant to the escherichia coli F4ac infection two times or are hybridized with the new American Duroc boars two times; starting from the third generation, stresia breeding and breeding are respectively adopted for groups, 2-3 generations of transverse hybridization is performed, and selection and remaining are performed by adopting comprehensive selection indexes and marker-assisted selection to form the new-variety pigs resistant to escherichia coli F4ac infection.

Description

technical field [0001] The invention relates to a method for cultivating a new strain of pigs, in particular to a method for cultivating a new strain of pigs resistant to Escherichia coli F4ac infection. Background technique [0002] my country is the largest pig production and pork consumption country in the world, and almost half of the pigs in the world are raised in China. Pork is a traditional source of meat in my country, accounting for about 66% of meat consumption. Piglet diarrhea is a common infectious disease in pig production, which has caused huge economic losses to the world's pig industry. Enterotoxigenic Escherichia coli F4 (Enterotoxigenic Escherichia coli F4, ETEC F4) is the most important pathogen causing diarrheal disease in newborn and pre-weaned piglets. Among them, about 40% of piglet diarrhea is caused by ETEC F4 infection. Even if the individual recovers from the disease, it will seriously affect the growth and development, and some will form dead p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/027
CPCA01K67/0275
Inventor 廖玲玲丁能水蓝海恩韦现色李亮
Owner 广西柯新源原种猪有限责任公司