Male calves born to dairy cows have no place in milk production. How they are treated — including the proportion killed at birth — is one of the most significant welfare issues in the dairy industry.
The killing of male dairy calves at birth represents a stark welfare failure embedded in the economic logic of dairy production: these animals have no commercial value and cost money to rear. Solutions exist but require market development: rose veal, beef-cross dairy systems, sex-sorted semen, and in-ovo sexing all reduce calf killing. Consumer acceptance is the limiting factor for veal; technology cost is the limiting factor for in-ovo sexing. Welfare-conscious dairy purchasing increasingly means asking about male calf policy as well as cow welfare.