01422naa a2200205 a 450000100080000000500110000800800410001910000200006024501310008026000090021152008090022065000110102965000140104065300260105465300160108070000160109670000160111270000210112877300670114910523821996-05-31       1990    bl ---       0--  u    #d1 aLEMOS, A. de M.  aBiochemical blood polymorphisms in pitangueiras cattle and their effects on reproductive, productive and heat tolerance traits  c1990  aThe objective of the present study was to evaluate the effects of hemoglobin and carbonic anhydrase phenotype on reproductive, productive and heat tolerance traits in a herd of Pitangueiras dairy cattle. Electrophoresis showed the occurrence of four hemoglobin phenotypes, i.e., A, AB and AC. The alelle frequencies for this system were 91.85%, 7.89%and 0.26% for alelles HBA, HBB and HBC, respectively. The phenotypes observed for the carbonic anhydrase system were S, FS, F, SZ and FZ, with alelle frequencies of 81.83%, 12.84% and 5.33% for CAS, CAF and CAZrespectively. The chi-square test showed that this herd is in Castle-Hardt-Weinberg equilibrium for the hemoglobin and carbonic anhydrase systems. The different phenotypes had no significant effect on reproduction, production or heat tolerance.  aBovino  aGenética  aFujificacao sanguinea  aPitangueira1 aLOBO, R. B.1 aMORTARI, N.1 aDUARTE, F. A. M.  tRevista Brasileira de Geneticagv. 13, n. 2, p. 293-303, 1990.