Method for breeding green-shelled egg laying ducks

Abstract

The invention discloses a method for breeding green-shelled egg laying ducks. The method is characterized by comprising the following steps: (1) collecting hatching eggs of male and female ducks from five or more than five towns of a central laying area, wherein the shape and appearance of the hatching eggs meet the variety, and the green-shelled egg rate of the hatching eggs is more than 40 percent; (2) cleaning, sterilizing and hatching the hatching eggs, eliminating unqualified ducklings to enable the variety and the appearance to be relatively consistent, then feeding mixed duckling groups until the ducklings are 120 days old, and establishing a basic green-shelled egg laying duck group according to a ratio of the male ducks to the female ducks by taking a family as a unit, wherein the ratio of the male ducks to the female ducks is 2:10; (3) making a comprehensive selection index, recording the egg yield, the daily egg number, the egg weight, the number of green-shelled eggs and the number of white-shelled eggs of each of at least thirty families in a determination process, eliminating white-shelled egg laying ducks from each generation, breeding a generation every two years, and performing test cross to improve the purity of green-shell genes and the egg laying performance so as to avoid mating of full sibs and half sibs, and breeding three to five generations to obtain a green-shelled egg product group.

Description

technical field [0001] The invention relates to a breeding method of poultry, in particular to a strain breeding method of laying ducks. Background technique [0002] my country is the world's largest producer and consumer of laying ducks. In 2012, the number of laying ducks raised reached 316 million, an increase of 31.60% over 2011, and the production of duck eggs was 5.1179 million tons. According to relevant statistics, the proportion of laying ducks in the poultry industry is increasing, and the consumption ratio of duck meat and duck eggs is still on the rise. As we all know, species contribute more than 50% in the breeding industry. However, the breeding system of high-quality and high-efficiency laying ducks in my country has not yet been established, and there are not many varieties of high-yield and stress-resistant laying ducks. There are also the problems of low overall breeding level and single species in the industry. Although there are local duck breeds with...

AI Technical Summary

Problems solved by technology

However, the breeding level of laying ducks is still in its infancy. Although there are some leading breeds of laying ducks in my country (Jinding Duck, Mountain Shelduck, Shaoxing Duck, etc.), the innovative breeding of high-yielding and stress-resistant green-shelled laying ducks still needs to be compared. big effort

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