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Revista Colombiana de Ciencias Pecuarias
versão impressa ISSN 0120-0690versão On-line ISSN 2256-2958
Resumo
GUERRA, María T; TRUJILLO B, Esperanza e CERON-MUNOZ, Mario. The leptin gene polymorphism, in the populations of Hartón del Valle, Blanco-Orejinegro ( BON) and Brahman cattle.. Rev Colom Cienc Pecua [online]. 2005, vol.18, n.3, pp.215-221. ISSN 0120-0690.
Recent investigations have identified some regions between and adjacent to the leptin gene, associated with different carcass fat levels in bovines in wich requencies vary greatly from one race to another, and from one population to another. This investigation determined the polymorphisms for the region 5 UTR and flanking region to the end 3’ of the leptin gene using two markers ST and WD (G18586 and U50365). 261 animals were evaluated of Hartón del Valle (100), Brahman (121) and BON (40) cattle. Were evaluated the result of this analysis where, 7 different alelles for microsatellite ST and 15 for WD, in the total population. The creole populations evaluated for marker ST are not in Hardy-Weinberg (HW) equilibrium. The marker WD only appeared H-W equilibrium for the population Brahman. The Brahman cattle was the most polymorphic cattle for microsatellites ST, where 6 for ST alleles were found. For WD the most polymorphic cattle was Hartón del Valle and less polymorphic cattle was the BON, with 6 for ST and 6 for WD alleles.
Palavras-chave : microsatellite; obese gene; ST; WD.