Goose reproductive performance improving selection method

Abstract

The invention provides a goose reproductive performance improving selection method. The goose reproductive performance improving selection method comprises the steps of performing first selection whenbreeding gooses are hatched; performing second selection when the breeding gooses are 10 weeks old; performing third selection when replacement young gooses are 80-110 days old; establishing a primary generation core group new family with the 1-year-old breeding gooses under third selection and selected 2-year-old gooses at an appropriate male-female ratio; performing measurement when the core group breeding gooses start laying eggs, reserving hatching eggs of a next generation when the core group breeding gooses are 44-44 weeks old; performing fourth selection after egg laying of the primarygeneration ends, and selecting and reserving high-reproductivity male and female gooses for establishment of a next generation new family; repeating the steps above after reserving hatching eggs of afurther next generation. On the basis of estimation of variance components and breeding value of major reproduction traits of the gooses and by performing selection with the phenotypic value replacedby the breeding value, the goose reproductive performance improving selection method establishes a four-step selection method in a core group structure with the 1-year-old gooses and the 2-year-old gooses, increases the selection pressure of groups as well as the selecting accuracy and accelerates genetic progress of the reproduction traits.

Description

technical field [0001] The invention relates to goose breeding technology, in particular to a selection method for improving goose reproductive performance. Background technique [0002] my country is a big goose-raising country, and the breeding volume of meat goose accounts for more than 90% of the world's total. However, geese are generally raised by small-scale farmers, and the reproductive performance of geese is low. With the development of society and the continuous increase in people's consumption of goose meat food, the meat goose farming industry is gradually moving towards scale and standardization, and its low reproductive performance has gradually become one of the bottlenecks hindering the development of the meat goose industry. Although the breeding technology of chickens and ducks is relatively mature at present, because geese also have reproductive characteristics such as seasonality, gregariousness, and mate selection, the conventional general breeding tech...

AI Technical Summary

Problems solved by technology

However, due to the late start of goose breeding and the difficulty of individual measurement, there are few studies on the genetic parameters of goose production performance, resulting in the selection of phenotypic values ​​in breeding, which is still progressing slowly.

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