Breeding method capable of improving egg yield of muscovy ducks

Abstract

The invention discloses a breeding method capable of improving the egg yield of muscovy ducks. The breeding method comprises the following steps of early-stage primary election, wherein a high-qualitypopulation are selected in young ducks according to the body-size healthy and strong degree in proportion; first-time egg laying selection, wherein according to the whole-period egg production numberof the previous generation and family information, the breeding values of individuals in the current generation are calculated, and high-egg-yield and high-breeding-value male and female ducks are selected and remain in proportion; egg production determination, wherein when the female ducks start laying, the number of the qualified eggs laid by each female duck individual is recorded; second-timeegg laying selection, wherein according to the egg yield of the female ducks in the current generation and the genealogy information, high-egg-yield and high-breeding-value male ducks and female ducks are selected and remain in proportion; family building, a full-sib family is built by the male ducks and the female ducks in proportion, the next generation is bred, and the above steps are repeated. The breeding method has the advantages that the contradictions between subculture and egg laying selection are well solved, genetic contributions on the egg yield in the later egg laying period aretaken into account, the breeding efficiency is improved, and improvement of economic benefits is facilitated.

Description

technical field [0001] The invention relates to the field of seed breeding, in particular to a breeding method capable of increasing egg production of Muscovy ducks. Background technique [0002] Egg production is one of the most important reproductive performance indicators of poultry. At present, breeding companies at home and abroad are working on improving the egg production of poultry and reducing the cost of seedlings, thereby improving the economic benefits of the enterprise; for example, yellow-feathered broilers are usually produced with The 300-day-old individual egg production of hens is used as the standard, the average value of the family is calculated, and the average value of the family is used as the basis for the egg production performance of the rooster, and the method of combining the individual with the family is used to select the hen; However, due to the difficulty in achieving individual egg production records of waterfowl, usually only the average egg...

AI Technical Summary

Problems solved by technology

[0002] Egg production is one of the most important reproductive performance indicators of poultry. At present, breeding companies at home and abroad are working on improving the egg production of poultry and reducing the cost of seedlings, thereby improving the economic benefits of the enterprise; for example, yellow-feathered broilers are usually produced with The 300-day-old individual egg production of hens is used as the standard, the average value of the family is calculated, and the average value of the family is used as the basis for the egg production performance of the rooster, and the method of combining the individual with the family is used to select the hen; However, due to the difficulty in realizing the record of individual egg production of waterfowl, usually only the average egg production of all individuals in a family is recorded and counted, but the selection effect of this method is relatively poor

[0003] As far as muscovy ducks are concerned, due to the influence of their own physiological characteristics, it usually takes about 30 weeks of age to start laying, and the egg production cycle is only 26 weeks. The time invested in pedigree, adjusting cages, and ensuring effective insemination intervals needs to wait until 18 to 20 weeks after laying eggs to carry out subculture egg collection and reproduction. At this time, it is in the middle and late stages of laying eggs. The rate is at a low level, which will affect the number of seedlings of the next generation core group, thereby affecting the overall selection effect; and the use of early egg production records for selection is conducive to shortening the generation interval and accelerating genetic progress, but due to the relationship between early egg production and There are only partial genetic correlations between egg production throughout the period (there are differences between different breeds), so for the purpose of breeding to improve the egg production of the core flock, early selection always has the disadvantage of low selection accuracy. Disadvantages, another problem in early selection is that the selection pressure will be concentrated in the early stage of egg production, which will lead to problems such as reduced egg production and accelerated egg production in the late egg production period, which is not conducive to production; Design a scientific breeding method to improve its egg production

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