As additional precautions, no cow with a retained afterbirth or unhealthy discharge from the womb should be left with the other cows.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
It frequently happens that the afterbirth is only loosely adherent to the womb and its removal is effected if but a slight amount of traction on it is exerted.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
In these cases, however, retained afterbirth is a common occurrence, even to the extent that frequent retention of afterbirth in a herd may be taken as an indication of the presence of the disease.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler