A kind of cultivation method of Guizhou black goat meat new line/species

Abstract

The invention relates to a method for cultivating new strains / species of Guizhou black goat meat. The method comprises the following steps: 1) Breeding Guizhou black goats, Nubian goats, and Karaha goats; 2) Obtaining the female parent of Nuhei hybrid F1 1. Kanu hybrid F1 male parent; 3) Obtain Kanu black F2 female parent; 4) Obtain Kanu black F3 male parent and female parent, and fine Kanu black F3 generation is cross-fixed. The present invention uses the BLUP method combined with conventional breeding methods, and through technical means such as synchronous estrus, artificial insemination, superovulation, embryo transfer, etc., finally cultivates Karaha goats, Nubian goats, and Guizhou black goats. 50%, 37.5%, and 12.5% ​​are new meat strains (species), which can fully combine the high meat yield of Kalaha goats, the moderate meat yield of Nubian goats, and the hybrids with strong milking ability Advantages and retention of Guizhou black goat's good meat quality, resistance to rough feeding, and strong stress resistance.

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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