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The perspective of using cocks with group breeding for artificial insemination of hens

Abstract

To keep genetic diversity and to decrease inbreeding pressure during preservation and breeding of small scale gene pool breeds there is feasible artificial insemination. There is needed to use not only the cocks, most valuable by their reproduction properties but each bird as a bearer of the marker traits of a breed. Because at the group keeping the impact of each cock is not equal, there occurs a narrowing of the genetic polymorphism. Current paper presents the results of investigations, carried out in the bioresource collection “Genetic collection of rare and vanishing chicken breed” of the Russian Research Institute of Farm Animal Genetics and Breeding with use of 16 chicken breeds in age of 56-58 weeks of life. During the investigation the cocks, selected according their exterior parameters, were taken from the floor group pens (where they were kept with hens at natural mating) and divided into two groups according body weight: 1st- 3 kg and more, 2nd-less than 3 kg. Cocks of each group demonstrated different reaction on the stress, determined by change of the keeping conditions, and duration of releasing from the stress. This resulted in differentiation of the quality of their native sperm (activity, concentration), During the evaluation of the cocks by their reaction on massage, there were found unstable reactions and big variation in sperm volume and quality depending on cocks’ breed and body weight. As the final result the variation coefficient in the 1st group was 4,7%, that significantly lower, than Cv in the 2nd group - 43,7%. The gained results confirm negative influence of the stress on sperm quality- i.e. its activity and concentration. The gained results can be useful for the gene pool farms, which keep their flocks at natural mating and planning to start artificial insemination of hens.

About the Authors

N. .. Pleshanov
Russian research institute of farm animal genetics and breeding - branch of the L.K. Ernst Federal science center for animal husbandry
Russian Federation


Y. .. Silyukova
Russian research institute of farm animal genetics and breeding - branch of the L.K. Ernst Federal science center for animal husbandry
Russian Federation


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For citations:


Pleshanov N..., Silyukova Y... The perspective of using cocks with group breeding for artificial insemination of hens. Genetics and breeding of animals. 2018;(3):82-86. (In Russ.)

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