Carmen Georgeta Nicolae

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THE ESTIMATION OF GENETIC DETERMINISM FOR BIOECONOMIC AND ECOECONOMIC TRAITS IN FISH - BASIS FOR GENETIC IMPROVEMENT

Carmen Georgeta Nicolae, H. Grosu, R.A. Popa, Dana Popa, M. Maftei, Mioara Costache

Abstract
Establish the genetic determinism is a very important step in animal breeding, including fish. Result of the selection of fish depends directly on the statistical relationship between the coefficient of heritability and phenotype. According to heritability value is underlie the breeding system, selection purposes and method. Furthermore the heritability is a part of any mathematical relation in animal breeding (estimation of breeding value, genetic gain). The work consists in identifying the methods used at international level for determining heritability of fish. The development of methodology for determining the genetic determinism is a basis for genetic improvement programs. A properly chosen and applied methodology can have a positive impact on bioeconomic and economic traits in fish.

Key words: fish, genetic improvement, heritability