Shalamaj L. Productivity and Breeding Value of the Ascanian Crossbred Rams Got with Various Selection Methods.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0400U002320

Thesis Registration Form

0400U002320.pdf

Applicant for

Specialization

  • 06.02.01 - Розведення та селекція тварин

31-08-2000

Specialized Academic Board

К 67.830.02

Essay

In the thesis, theoretical and practical material on productivity and breeding value of the Ascanian crossbred rams with the various selection methods is pre-sented. It has been found that inbreeding by a special selection of pairs and suffi-cient feeding of full value does not cause phenomenon of the inbreeding depres-sion in mechanisms forming natural resistance of the organism and is an effective method of creating prominent genotypes of high breeding value in the ram pro-ducing core of the Ascanian crossbreds. Selection effect with the use of the inbred rams is higher as compared to the outbred rams, heritage indices of the main se-lected characters being high (h2 = 0.552…0.737).

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