Breeding method for new strain of meat and fur coat dual-purpose good-breed small-tailed han sheep

Abstract

The invention discloses a breeding method for a new strain of meat and fur coat dual-purpose good-breed small-tailed han sheep and belongs to the field of animal breeding. Small-tailed han ewes and tan rams hybridize, the tan rams and German merino ewes hybridize, and dorper rams and the German merino ewes hybridize to obtain an F1 generation of sheep which are called as han-tan sheep, merino-tan sheep and merino-dorper sheep; the excellent han-tan ewes and the merino-tan rams are selected from the F1 generation of sheep to hybridize, and the excellent merino-tan rams and the merino-dorper ewes are selected form the F1 generation of sheep to hybridize to obtain an F2 generation of sheep which are called as han-merino-tan sheep and merino-tan-dorper sheep; the excellent han-merino-tan ewes and the merino-tan-dorper rams are selected from the F2 generation of sheep to hybridize again to obtain an F3 generation of sheep; the ewes and the rams of the F3 generation are crossbred to obtain a first crossbred generation of sheep, and through performing closed breeding and propagation expanding on the first crossbred generation, the new strain of meat and fur coat dual-purpose good-breed small-tailed han sheep is obtained. The new strain of bred good-breed small-tailed han sheep are high in reproduction rate and growth speed at an early stage and high in quality of meat and fur coats.

Description

technical field [0001] The invention belongs to the technical field of animal breeding, and relates to a method for cultivating a sheep strain, in particular to a method for cultivating a new breed of small-tailed Han sheep with dual-purpose meat and fur. Background technique [0002] In recent years, with the rapid development of the national economy and the continuous improvement of people's living standards, people's consumption of mutton has continued to increase. The development of large-scale sheep raising is an inevitable trend in the development of the modern mutton sheep industry. Affected by the general trend of the world's sheep raising industry shifting from wool-based to meat-wool, and then to meat-based, as well as market factors such as the sharp contradiction between domestic mutton supply and demand, and rising mutton prices, since the 1990s, my country's mutton sheep industry has developed rapidly. The sheep breeding industry is suitable for the development ...

AI Technical Summary

Problems solved by technology

Among them, due to the relatively low lambing rate of Dorper sheep ewes, the survival rate of lambs produced by Small-tailed Han sheep is also relatively low, which greatly restricts the number of subsequent crossbreeding groups, increases the difficulty of crossbreeding, and relatively reduces the final success rate

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