Animals Breeding Efficiency According to the Phenotype of their Offspring
Fedoseyeva Natalya Anatolyevna1, Sanova Zoya Sergeevna2, Myshkina Maya Sergeevna3, Kiselev Leonid Yuryevich4, Kiselyov Vladimir Leonidovich5

1VFedoseyeva Natalya Anatolyevna, Research Scholar

2Sanova Zoya Sergeevna, Research

3Scholar Myshkina Maya Sergeevna, Research Scholar

4Kiselev Leonid Yuryevich, Research Scholar

5Kiselyov Vladimir Leonidovich, Research Scholar

Manuscript received on 10 July 2019 | Revised Manuscript received on 22 July 2019 | Manuscript Published on 23 August 2019 | PP: 1501-1510 | Volume-8 Issue-9S3 August 2019 | Retrieval Number: I33140789S319/2019©BEIESP | DOI: 10.35940/ijitee.I3314.0789S319

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Abstract: The paper aims to identify the best animals with the optimal variant of selection traits in dairy cattle breeding by studying the breeding and genetic parameters (M, m, σ, Cv, r) of the basic dairy and reproductive traits of individuals and genetic groups, which make it possible to comprehensively assess the breeding efficiency of animals according to the phenotype of their offspring. The paper justifies characteristics of the seed bulls fixed for the breeding stock, and proposes basic principles of selection. The range of evaluated traits was expanded – from milk productivity and reproductive qualities to health indicators (longevity, somatic cell content in milk) and estimate of the animal body type (exterior). The correlation coefficient (g) between fat and protein was not standard: when selecting animals with a high content of protein in milk, only in 20% of cases the selected cows have a high level of fat.

Keywords: Breed; Genetic groups; Genetic potential; Genetic progress through selection; Productivity
Scope of the Article: Bio-Science and Bio-Technology