About one third of US beef cow-calf owners agree that it has an economic impact on their operations [3] and it has constantly accounted for more than 50% of unweaned dairy heifer deaths since 1991 [4].
About one third of US beef cow-calf ownersagree that it has an economic impact on their operations[3] and it has constantly accounted for more than50% of unweaned dairy heifer deaths since 1991 [4].