Method for breeding new strain of sheep for meat

Abstract

The invention relates to a method for breeding a new strain of sheep for meat. The method comprises the following breeding steps: (1) breeding Tibetan han generation F1 female sheep, namely performinghybridization on Oura Tibetan sheep as a male parent and small tailed han sheep as a female parent so as to obtain a Tibetan han generation F1 sheep group; (2) breeding super Tibetan han generation F2 female sheep, namely performing hybridization on female sheep of the Tibetan han generation F1 of the step (1) with Texel male sheep so as to obtain a super Tibetan han generation F2 sheep group; (3) breeding super Tibetan han generation F3 sheep, namely performing hybridization on the Texel male sheep as a male parent with female sheep of the super Tibetan han generation F2 in the step (2) so as to obtain a super Tibetan han generation F3 sheep group; and (4) breeding a sheep group of a new strain of hybridization sheep, namely performing cross hybridization fixation on male sheep of the super Tibetan han generation F3 in the step (3) with female sheep of the super Tibetan han generation F2 in the step (2) so as to obtain a core super Tibetan han group, and performing selection, so as to obtain the new strain of the sheep for meat. The new strain of the sheep for meat, which is bred by using the method, has the polyembryony gene of local fine breed sheep of China and the high meat yield gene of imported breed sheep.

Description

technical field [0001] The invention relates to the technical field of animal breeding, in particular to a method for cultivating new strains of meat sheep. Background technique [0002] The number of sheep in our country ranks first in the world, but there are some problems in the production of mutton sheep in my country: the lack of high-quality mutton sheep breeds. At present, the production of mutton sheep in my country mainly uses local breeds, fine-wool sheep, semi-fine-wool sheep and their hybrid offspring for fattening. The meat production performance and production potential have played a great role in the production of mutton sheep, but there is still a big gap compared with specialized mutton sheep breeds. Specialized mutton sheep breeds have large body size, fast growth and development, high product performance, and tender meat. and high fecundity, the imported mutton sheep breeds performed well in terms of adaptability and hybrid performance with local breeds, but...

AI Technical Summary

Problems solved by technology

[0002] The number of sheep in our country ranks first in the world, but there are some problems in the production of mutton sheep in my country: the lack of high-quality mutton sheep breeds. At present, the production of mutton sheep in my country mainly uses local breeds, fine-wool sheep, semi-fine-wool sheep and their hybrid offspring for fattening. The meat production performance and production potential have played a great role in the production of mutton sheep, but there is still a big gap compared with specialized mutton sheep breeds. Specialized mutton sheep breeds have large body size, fast growth and development, high product performance, and tender meat. and high fecundity, the imported mutton sheep breeds performed well in terms of adaptability and hybrid performance with local breeds, but the coverage rate of improved breeds was low, mainly local breeds, and the coverage rate of improved breeds of local breeds was less than 50%. %

[0003] In order to improve our country's local breeds and increase the coverage of fine breeds, Shanxi Province has also introduced many high-quality sheep for hybrid improvement. However, due to the large number of sheep and the high price of high-quality sheep, relying on imported high-quality sheep cannot Fundamentally solve the problem of low coverage of sheep breeding in our province

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