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The occurrence of twinning may have both positive and negative effects. Twinning is associated not only with increased dystocia, increased incidence of retained placenta, greater rate of abortion and post partum interval, higher culling rate in cow but also mortality in twin calves. Twinning is helpful for obtaining more progeny from a genetically superior female and can considerably increase the efficiency of production in cattle.doi:10.20431/2456-0561.0104001 fatcat:dnj36ly6u5gyrenyuphiark5di