Breeding method of Kelepigs

Abstract

The invention discloses a breeding method of Kelepigs. The breeding method of the Kelepigs comprises the following steps of (1) establishing basic groups, specifically, introducing the Kelepigs with hair color characteristics of black, brown and six white from a Kelepig distribution area to form corresponding zero-generation basic groups; (2) carrying out closed breeding, specifically, carrying out line group closing on the zero-generation basic groups with the corresponding hair color characteristics; (3) carrying out open type breeding, specifically, introducing Kelepig external blood to participate in breeding during the open type breeding; and (4) carrying out the closed breeding again, specifically, carrying out line group closing again on the population with corresponding hair color characteristics in the fifth generation, only allowing boars and sows in the groups to mate and breed, and not allowing to introduce a Kele pig blood source to the outside. In the steps, individuals containing Halnn and HalNn genotypes and carrying RN genes are removed by adopting a PCR-RFLP technology at the same time, and group subculture breeding, stage selection and homogeneous matching are used for cross-crossing fixation until black Kelepigs, the brown Kelepigs and the six-white Kelepigs which are stable in heredity are bred.

Description

technical field [0001] The invention relates to a breeding method for Kele pigs, belonging to the technical field of pig breeding. Background technique [0002] Kele pig is a local excellent pig breed in the alpine mountainous area in the northwest of Guizhou Province. It is a precious pig breed resource that has been spontaneously selected and bred by the people of all ethnic groups in the production area under the local socio-economic conditions and natural environment. It belongs to the southwest mountainous area. The grazing pig breed has the characteristics of excellent meat quality, strong stress resistance, good motherhood, early sexual maturity, strong disease resistance, and suitable for stocking. It is the real "Wujin pig" in the Wumeng karst mountain area, and it is also a rare one in Guizhou Province. Valuable pig breeding resources. [0003] Since the 1980s and 1990s, local research institutes have carried out research on the conservation, breeding and utilizat...

AI Technical Summary

Problems solved by technology

[0003] Since the 1980s and 1990s, local research institutes have carried out research on the conservation, breeding and utilization of Kele pig germplasm resources, but none of them have carried out the breeding of Kele pig strains, and the research lacks systematicness

From 2000 to 2010, Kele pig production areas increased the introduction and promotion of foreign pig breeds, because Kele pigs did not have the advantages of fast growth and high feed remuneration for imported pig breeds (Landrace pigs, York pigs, Duroc pigs, etc.) , the farms (households) that originally raised Kele pigs turned to raise foreign pig breeds and their hybrid pigs, resulting in a sharp decline in the annual production of Kele pigs from 350,000 in 1998 to 30,000 in 2010. Unplanned crossbreeding of pigs is serious, resulting in purebred Kele pigs being effectively preserved only in remote villages with inconvenient transportation in production areas, and germplasm resources are facing challenges

However, due to the insufficient level of research and development of Kele pigs, the lack of systematic breeding and technology suitable for breeding in the alpine mountainous areas of Guizhou, the industrialization process of Kele pigs has been limited.

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