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Polymorphism of proteins in the blood of horses: study of a local population (Lavradeiro) of Roraima, Brazil

Lucia Panepucci; Vera Vicente; José B. de F. Trovo

EMBRAPA/CENARGEN, Caixa Postal 102372, 70770 Brasilia, DF, Brasil

ABSTRACT

Polymorphisms of proteins in the blood of 99 Lavradeiro horses in the state of Roraima, Brazil, were studied to determine some aspects of the genetic composition of this population. Four genetic systems (transferrins, albumin, phosphoglucomutase, and carbonic anhydrase) were analysed and gene frequencies for four loci were determined. The population was shown to be in Hardy-Weinberg equilibrium, except for the transferrin system. Comparisons of the results with other studies suggested a stronger genetic relationship between the Lavradeiro and Thoroughbreds than was initially suspected.

Keywords: Polymorphism of proteins; Horses.

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