By Faridat Salifu
Deworming calves two months before weaning could not only boost weight gain but also improve immune function, according to research by the Arkansas Agricultural Experiment Station.
Daniel Rivera, associate professor of animal science, said calves free of parasite burden may respond better to vaccinations and resist illness more effectively.
The study showed pre-weaned calves gained an average of 4.5 pounds more than untreated calves at weaning and still held a 5.5-pound advantage three weeks later.
Researchers believe this performance gain is linked to reduced competition between parasites and the immune system for resources.
Rivera’s team collected blood samples to analyze antibody levels in calves dewormed before weaning, with results expected later this year.
If early deworming improves immune response, the practice could help producers raise healthier, more resilient cattle while capturing additional market value.
Although implementing pre-weaning deworming adds labor costs, Rivera said the potential long-term benefits to calf health and productivity may outweigh the extra effort.
