Study on Genetic Variations of Esterase in Blood Serum Heart Muscle and Liver of Geese

M. OBLAKOVA1 and S. TANCHEV2
1 Agricultural Institute, Hybrid Centre of Poultry Breeding, BG-6000 Stara Zagora, Bulgaria
2 Thracian University, BG-6000 Stara Zagora, Bulgaria

Abstract

OBLAKOVA, M. and S. TANCHEV, 2004. Study on genetic variations of esterase in blood serum heart muscle and liver of geese. Bulg. J. Agric. Sci., 10: 243–247

Five hundred and sixty gees of the breeds Landen Grey, Local Benkovsky Goose, Hybrid "Bela-1", Wild Wightfront and Sowing Geese were studied. Two types of estherases were established in the blood serum and the frequances of alleles and genotypes by the polymorphic system Es-1 were also dedetermined fined. Four groups were made using the results of 22 parents couple and a hybrid analysis was done with the enzyme Es-1 from 90 of their offsprings. A difference in the speed of Es-1 migration in domestic and wild gees, was established as higher electromobility was found in the wild ones. Following the tissue esterasis, in the heart muscle was fixed one type; Es-10 and in the liver respectively five types: two monomorphic Es-5 and Es-9, and three polymorphic– Es-6, Es-7, Es-8, determined by two-alleles genes.

Key words: geese, electrophoresis, polymorphism, esterases, genotype, allelic frequencies, electromobility