Breeding method of new disease-resistance large white pig strain

A breeding method and technology of Large White pigs, applied in the field of breeding new disease-resistant strains of Large White pigs, can solve the problems of disease resistance and fecundity decline, conception rate of sows, and the survival rate of weaned piglets. Reduce the incidence rate, increase the annual genetic progress, and the effect of a long cycle
CN106973854AInactive Publication Date: 2017-07-25TAICANG JINZHU AGRI DEV
2 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TAICANG JINZHU AGRI DEV
Publication Date
2017-07-25
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a breeding method of a new disease-resistance large white pig strain. The method includes the following steps that 1, a feed adding method is adopted to conduct an Escherichia coli infection experiment on weaned piglets of a core group in large white pigs, and an Escherichia coli resistant breeding basic group in the large white pigs is established; 2, concentration determination is conducted on cytokines of interleukin 1beta, interleukin 4, interleukin 6, interleukin 8, interleukin 10, transforming growth factor beta, tumor necrosis factor alpha and interferon gamma of an Escherichia coli resistant population in the basic group; reproductive performances are detected and selected, growth speeds, lean meat ratios and carcass quality characters, and a first generation is established; 3, a group subculture selective breeding method and a molecular-marker-assisted selection method are adopted. In this way, by the adoption of the breeding method of the new disease-resistance large white pig strain, after four to five generations, a vested breeding target is achieved gradually, a new-strain core group is established, and the morbidity of piglet diarrheal diseases is expected to be reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the fields of animal genetics, breeding, reproduction and molecular biology, in particular to a method for cultivating a new disease-resistant strain of Large White pigs. Background technique

[0002] my country's pig industry has a strong pig production system, which is often said that "my country is a big country for pig farming", but the top core breeding pig resources in the "pyramid" breeding system have long relied on imports. For a long period of time, my country has been in a vicious circle of "introduction → maintenance → degradation → re-introduction" for breeding pigs. After joining the WTO, this situation has become more serious. In short, the obvious dependence on the introduction of breeding pigs is very unfavorable to the sustainable development of my country's pig industry. Considering the long-term interests of the country, this phenomenon should not continue to develop. Faced with this situation, we must chan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More