15/11/2025
Do you allow calves to suckle the dam after calving?
What could be the implications?
🍼 Unknown Colostrum Intake
You never know what a calf has had if you leave it to suckle. Calves left on the dam are 2.4X more likely to receive insufficient antibodies, and suffer from failure of passive transfer.
🍼 Reduced Colostrum Volume/Quality
Leaving a calf on the cow means the colostrum you do take off the cow later will not be as good, or there will not be much of it. If the calf hasn’t received sufficient antibodies when sucking, topping it up will be more difficult.
🍼 Transmission of Disease
Calves are more likely to ingest pathogens that cause sickness and disease, as the cow’s udder is not sterile. Certain diseases can also pass through colostrum, so if they are an issue on your farm, you may need to look at pasteurisation or colostrum replacers.
🍼 Increased Risk of Mortality
Not only does colostrum provide antibodies, it offers the calf essential energy. If calves are deficient in antibodies and have not received enough colostrum to support maintenance, thermoregulation, and immunity, the likelihood of mortality is greater.
🍼 Increased Stress
Leaving the calf on the cow for longer may make separation more stressful for both parties, as the bond between cow and calf is stronger.
I normally advise that farms remove the calf once it has been licked. This allows enough time for the dam to calm down and release milk, and is soon enough that the calf doesn’t remain in a contaminated environment for a prolonged period of time.
If you would like some guidance on how best to optimise your calf rearing system, I have some availability for online consultancy or on-farm visits in 2025! 😊