Resumo

ROJAS, Inioska et al. Allelic Frequency of Beta-lactoglobulin in Limonero Creole Cattle. Rev. cient. (Maracaibo) [online]. 2010, vol.20, n.2, pp.176-180. ISSN 0798-2259.

In order to characterize the beta-lactoglobulina gene (BLG) in the Limonero Creole cattle through PCR-RFLP technique, 163 purebreed animals were used from the Carrasquero local station (Carrasquero-Zulia State), genotypes were determined through gel electroforesis in agarosa. Gene and genotypic frequencies obtained were A (0.22) and B (0.78) and AA (0.07), AB (0.24) and BB (0.64) respectively, the population is in equilibrium of Hardy-Weinberg with (P<0.05), the results indicate that the alelic frequency of was more high B but that A, being this important one, since the effects of the variants of the BLG on the amount of fat and proteins in milk have been determined, the selection in favor of allele B in the population will entail to an improvement in the quality and yield in the cheese production, these results represent a valuable contribution the knowledge of this race and its importance, since, represents an alternative for systems directed to the cheese production.

Palavras-chave : Beta-lactoglobulin; PCR; Limonero Creole cattle; allelic frequencies.