Breeding method of disease-resistant pigs

A technology of group subculture selection and piglets, which is applied in animal husbandry and other fields, can solve the problems of biological safety hazards in the pig breeding industry, and achieve the effect of improving the competitiveness of the pig breeding industry, ensuring the safety of pig breeding, and stable disease resistance

Active Publication Date: 2021-07-23
山东融发生物科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although my country's African swine fever vaccine research has made some progress, due to the particularity and complexity of the African swine fever pathogen, the large-scale and long-term use of the vaccine is likely to bring major biological safety hazards to my country's pig breeding industry

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  • Breeding method of disease-resistant pigs
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  • Breeding method of disease-resistant pigs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The cultivation of embodiment 1 anti-stress large white pig (Yorkshire)

[0038] In order to obtain large white pigs with strong anti-stress ability, which is beneficial to the growth and fattening of large white pigs, the piglets born by large white sows were continuously selected through resistance to sudden strong shouting, resistance to repelling, and resistance to low temperature conditioned stimulation , obtained large white pigs with strong anti-stress ability.

[0039] 1. Materials and Methods

[0040] 1.1 Pig

[0041] Large white sows and large white boars, originally introduced from the UK, were raised according to conventional feeding methods.

[0042] 1.2 Method

[0043] According to the conventional method, the semen of the boar was collected, and the large white sow in estrus was artificially inseminated by the conventional method. Pregnant sows were fed normally in the breeding barn. When piglets are born, 21 days old, 24 days old, 70 days old, 156 d...

Embodiment 2

[0063] The cultivation of embodiment 2 anti-stress landrace pig (Landrace)

[0064] In order to obtain Landrace pigs with strong anti-stress ability, which is beneficial to the growth and fattening of Landrace pigs, piglets born from different Landrace sows were continuously selected for long-term (about 1 hour) repelling stimulation, etc., and obtained Landrace pigs with strong anti-stress ability.

[0065] 1 Materials and methods

[0066] 1.1 Pig

[0067] Landrace boars and Landrace sows were originally introduced from the UK and were raised according to daily feeding methods.

[0068] 1.2 Method

[0069] According to conventional methods, the semen of Landrace boars was collected, and the Landrace sows in estrus were artificially inseminated. Pregnant sows were fed normally in the gestation pen. According to the method described in Example 1, postpartum piglets were stimulated with driving, transition, noise and temperature as stressors. The piglets with high daily we...

Embodiment 3

[0085] The cultivation of embodiment 3 anti-stress Duroc pigs (Duroc)

[0086] In order to obtain Duroc pigs with strong anti-stress ability, which is beneficial to the growth and fattening of Duroc pigs, piglets born from different Duroc sows were tested by anti-sudden strong shouting, 2-10°C low temperature stimulation and long-term (About 1 hour) Continuous breeding was carried out by driving away stimulation, etc., and Duroc pigs with strong anti-stress ability were obtained.

[0087] 1 Materials and methods

[0088] 1.1 Pig

[0089] Duroc boars and sows, originally imported from England, are raised according to daily feeding methods.

[0090] 1.2 Method

[0091]According to the conventional method, the semen of Duroc boars was collected, and the Duroc sows in estrus were artificially inseminated. Pregnant sows were fed normally in the gestation pen. According to the method described in Example 1, postpartum piglets were stimulated with driving, transition, noise and ...

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Abstract

The invention relates to the technical field of animal genetic breeding and reproduction, in particular to a breeding method of disease-resistant pigs. The breeding method of the disease-resistant pigs comprises the following steps that (1), one or more factors of noise, driving, transition and temperature serve as a stress source, and anti-stress pigs are bred through a group subculture breeding method; and (2) the anti-stress pigs in the step (1) are taken as a basic group, and anti-stress and anti-escherichia coli infection pigs are bred through the group subculture breeding method. According to the breeding method of the disease-resistant pigs, the variety obtained through a traditional disease-resistant breeding means is stable in disease resistance and has multiple resistances; the bred anti-stress and anti-escherichia coli infection pigs also have good resistance to other diseases such as swine fever, porcine reproductive and respiratory syndrome and the like, especially have extremely high resistance to the African swine fever, and the death rate is almost zero after the pigs are infected with the African swine fever under natural conditions.

Description

technical field [0001] The invention relates to the technical field of animal genetic breeding and reproduction, in particular to a method for selecting and breeding disease-resistant pigs. Background technique [0002] In recent years, the scale, intensification and industrialization of pig farms have become higher and higher. However, in the process of breeding development, the outbreak of pig diseases will seriously affect the production and operation activities of the farms. Pig diseases have the characteristics of many types of viruses and complex pathogenic factors. There are more than 50 kinds of viruses that can cause swine diseases, and many bacterial substances can also cause swine diseases. [0003] Piglet yellow scour and piglet pullorum are both acute and highly fatal infectious diseases of newborn piglets caused by pathogenic Escherichia coli and its toxin. Generally, the disease occurs within a few hours to 7 days after the piglets are born. It has the chara...

Claims

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 葛长利扈荣良陈其美陈腾高玉伟葛蕾温兴钰王龙刘丽周鑫韬吴添文
Owner 山东融发生物科技开发有限公司
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