Red cell carbonic anhydrase polymorphism in Indian zebu cattle and their crossbreds

Red cell carbonic anhydrase (Ca) types were investigated in 750 animals from three zebu, two exotic and three crossbred breeds. A Ca isozyme of slower mobility than the S isozyme was observed in four Sahiwal animals. The gene frequency of CaS, which was the predominant allele in all the breeds investigated ranged from 0.88 to 1.0.