Boyko O. Methods to improve reproductive ability of dairy cattle on a complex of traits in the Cherkassy region

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0416U004607

Thesis Registration Form

0416U004607.pdf

Applicant for

Specialization

  • 06.02.01 - Розведення та селекція тварин

13-10-2016

Specialized Academic Board

Д 27.355.01

Institute of Animal Breeding and Genetics nd. a. M.V.Zubets of NAAS

Essay

Is devoted to complex research of reproductive ability of bulls and cows' productivity of milking direction, depending on the genotypical, paratipical factors in the Cherkassy region. There was found relation of indicators of sires' semen productivity to breed, body weight, conformation, age, season, sexual activity and morphological parameters of blood. The positive relationship between the number of sperm in the ejaculate and measuring of the body at the age of 1-2 years. It was found that the most cost-effective is the use of cows with the service period of 91-120 days.

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Files

aref.doc

dis.doc

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