Blood Group Polymorphism In Hungarian Grey Cattle
2 Mezogazdasagi Minosito Intezet, Budapeste- MACARİSTAN - The material of the study consisted of 281 Grey cattle at Városföld State farm and 63 Grey cattle at Kiskunfèlegyhaza State Farm in Hungary.
The haemolytic method was used for blood typing. The total number of reagents used 50 in 10 systems. For the estimations of allele frequencies, maximum likelihood method was used for the B system, while Hardy - Weinberg for J, L M, T', Z and gene counting for the F-V, R'-S systems were employed.
In the B system 21 different phenogroups (alleles) in the Varosföld herd and 114 different phenogroups in the Kiskunfelegyhaza herd were identified. In the B ystem the phenogroups of BOxP2QA'D'I and P2Y2 in the Varosföld herd, BG2KOxE'2O' and G1OxA' in the Kiskunfelegyhaza herd, were found in high frequencies.
Although the two herds were relatively well isolated it was found that the two population possessed similar but not identical genetic make up. Since the herds are closed, their inbreeding coefficients need to be checked periodically and planned matings should be practised, for the prevention of the detrimental effects of inbreeding.
Keywords :