Malhado, C.H.M. Carneiro, P.L.S. Malhado, A.C.M. Martins, J.A.M. Martins Filho, R. Bozzi, R. History of registered Gyr breed in brazilian northeast: population structure and genetic improvement of growth traits Subjects--Topical Terms: BOVINOENDOGAMIAPARÂMETRO GENÉTICO