Gh. Hrincă

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GENETIC POLYMORPHISM OF SERUM ALBUMIN IN THE CARPATHIAN BREED IN ECONOGENIC INTERRELATION WITH OTHER GOAT BREEDS

Gh. Hrincă

Abstract
This paper has proposed to reveal the albumin polymorphism in goats belonging to the Carpathian breed. Identification of albumin phenotypes was performed from blood serum of animals by starch gel electrophoresis method. Depending on the migration speed of albumin fractions, three phenotypes were found: homotype AlbFF (with fast electrophoretic migration), homotype AlbSS (with slow electrophoretic migration) and heterotype AlbFS (with intermediate electrophoretic migration). Emergence of albumin phenotypes is due to the two co-dominant autosomal alleles, AlbF si AlbS, whose distribution is unequal within the population, the allele AlbS being very common (83.66%) compared to allele AlbF (16,34%). Unequal spread of these alleles causes a differentiated distribution of albumin genotypes: homozygotes AlbSAlbS are the most common (70.24%), heterozygotes AlbFAlbS are enough well represented (26.83%), and homozygotes AlbFAlbF register a very low frequency (2.93%). As a result, the summed homozygosity (AlbFAlbF + AlbSAlbS is three times more frequent (73.17%) than heterozygosity AlbFAlbS (26.83%). The Carpathian breed is in Hardy-Weinberg genetic equilibrium at the locus Alb, both at the level of individual albumin genotypes, as well as regarding the general status of albumin zigosity. From the econogenic point of view, the Carpathian breed is similar to several breeds of goats of the Central and Eastern Europe.

Key words: albumin, genetic polymorphism, goat