Methods of assessment of worth of genetic resources of animals

Abstract

The purpose. Analysis and generalization of existing methods of assessment of genetic worth of animals. Methods. Materials and publications which map foreign experience of assessment of genetic resources of animals are studied. Results. The survey of existing methods of assessment of genetic worth of animals is made. International experience of assessment of breeding programs based on formation of selection indexes is surveyed. Conclusions. Genetic worth of cows and bulls of dairy and dairy-meat breeds is evaluated on the basis of special procedures of assessment of breeding value, genetic intransmutations (trends) and determination of economic significance of these attributes in indexes of selection. Methods. Investigated materials and publications, which highlights AnGR estimation experience abroad.

Significance of breeding value indicators for prediction of milk yield

“…Ukrainian catalogs of breeder bulls list more than a dozen different indicators of their breeding value in terms of milk productivity. Each of these indicators characterizes quantitative, qualitative or complex aspects of evaluation [1][2][3][4]. In particular, among the breeding value indicators there is a block of indicators that evaluate exactly breeding value by milk productivity, i.e.…”

“…In countries where breeding work is carried out at a high level, the calculation of the breeding value index is carried out simultaneously based on 4-6 economic and 17-18 breeding indicators. Usually such indicators in numerical form characterize the genetic potential of livestock from the point of view of its influence on the complex of economic and useful traits of offspring [4][5][6][7][8][9][10][11].…”