Breeding method of a new breed of meat sheep

Abstract

The present invention relates to a method for cultivating a new strain of meat sheep. The cultivation steps are as follows: (1) Cultivation of Tibetan cold F1 generation ewes: select Ora Tibetan sheep as the male parent, and cross with Small-tailed Han sheep as the female parent to obtain Tibetan Han sheep F1 generation flocks; (2) Breeding of special Tibetan cold F2 generation ewes: select step (1) Tibetan cold F1 generation ewes and Texel rams to produce special Tibetan cold F2 generation sheep; (3) Cultivation of Te Zanghan F3 generation sheep: Texel rams are used as male parents, and crossed with the Te Zang Han F2 generation ewes in step (2) to produce Te Zang Han F3 generation sheep; (4) Cultivation of new strains of hybrid sheep flocks: Selection of Te Zang Han F3 generation rams in step (3) and Te Zang Han F2 generation ewes in step (2) are crossed and fixed, and the core group of Te Zang Han is selected, and meat is bred New strains of sheep were used. The new breed of meat sheep cultivated by the invention not only has the multifetal gene of local fine breed sheep in my country, but also has the high-yielding meat gene of introduced 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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