Method for cultivating new meat goat strain/species of Guizhou black goat

Abstract

The invention relates to a method for cultivating a new meat goat strain/species of Guizhou black goat. The method comprises the following steps: 1) breeding Guizhou black goats, Nubian goats and Karahao goats; 2) obtaining a Nubian-black hybrid F1 generation female parent and a Karahao-Nubian hybrid F1 generation male parent; 3) obtaining a Karahao-Nubian-black F2 generation female parent; and 4)obtaining a Karahao-Nubian-black F3 generation male parent and a Karahao-Nubian-black F3 generation female parent, and fixing the excellent Karahao-Nubian-black F3 generation by crossing. According to the method, the BLUP method technology is combined with the conventional breeding method, and the new meat strain (species) with the blood relationship ratios of the Karahao goats, the Nubian goatsand the Guizhou black goats being 50%, 37.5% and 12.5% respectively is finally cultivated by virtue of the technical means of synchronous estrus, artificial insemination, superovulation, embryo transplantation and the like. The strain (species) can fully combine the heterosis of high meat yield of the Karahao goats, moderate meat yield and strong lactation capability of the Nubian goats, and retain the excellent characteristics of good meat quality, crude feed resistance and strong stress resistance of the Guizhou black goats.

Description

technical field [0001] The invention relates to the technical field of animal husbandry and breeding, in particular to a method for cultivating new strains / species of Guizhou black goat meat. Background technique [0002] Guizhou black goat is one of the three excellent local goat breeds in Guizhou Province. It is a goat breed with both skin and meat. Slow, poor meat production performance, and low slaughter rate greatly limit the breeding of Guizhou black goats and reduce the breeding benefits; Nubian goats are a goat breed with both skin, meat and milk. , tender meat, large milk yield, high milk fat rate, strong fecundity and other excellent characteristics; Karaha goat is the latest new meat goat breed of Boer goat. It has good characteristics such as rich meat and high slaughter rate, and it is an ideal improved variety for improving the meat production performance of Guizhou goats. [0003] At present, the development and utilization of hybridization and the cultivati...

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Problems solved by technology

[0005] However, although the invention patent of Chinese patent application number: 201811626630.4 has the advantages of high reproduction rate and light smell of mutton, it has been found to have the following defects in practice: ① only the new strain obtained by crossing Guizhou black goat and Nubian goat has anti- The shortcomings of poor reversibility, insignificant increase in meat production and growth rate; ② Unclear breeding standards for Guizhou black goats, Nubian goats, and Karaha goats, and the results of selection and matching are not stable

[0007] However, the Chinese patent application number: 201910320903.0 is based on the selection of the Caguinu hybrid line. Although it can improve the production performance of Guizhou black goats on the basis of individual meat production performance, lactation performance, and group lambing performance, there are the following Defects: This method achieves the effect of improving meat production performance, lactation and group lambing performance through the three hybrid lines of Kaguinu, Jianguinu and Kaguinu. The operation is cumbersome, the use of hybrid advantage is not clear, and it is difficult to achieve many purposes. , and in the step method, the F4 generation Kanu Jiangui goat has not been cross-fixed and the fixation is difficult, and the cultivation of new strains (species) is difficult

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