Get cow-calf pairs out onto clean ground, such as fresh pasture, and give them as much space as possible. That’s how Ryan McCarron sidestepped a calf scours outbreak on his eastern Nova Scotia farm in 2019.
McCarron, who farms with family members at Antigonish, about 160 km northeast of Halifax, became alarmed when a few calves became sick and died early in the 2019 spring calving season.
“It was a frustrating situation,” says McCarron. “Calves were getting sick, we treated them but several still died. Something had to change.”
Necropsy examinations showed the dead calves had picked up a harmful strain of E. coli bacteria, likely from fecal contamination of the soil in the yard next to the barn, which led to the serious and fatal cases of scours. Continue reading
The most important day of a calf’s life is the first one. There are some key factors that play a role in whether or not a baby calf gets off to a good start and research has demonstrated that the first 24 hours of life are critical in order for a calf to survive to weaning and beyond.
Interventions – follow-up care is important
Dystocia, or calving complications, pose a health risk for both the newborn calf and the cow. While dystocia can be partially managed with careful breeding choices and culling practices, proper nutrition, and managing for a body condition score of 3 (on a scale of 1-5) before calving, difficult deliveries can still occur.
Every scenario is different, however once a water bag appears, a calf should hit the ground within one hour for cows, or up to one and a half hours for a first-calf heifer. If this doesn’t happen, intervention may be needed, especially if no progress has occurred for thirty minutes, the cow stops pushing, or there are other signs of trouble. If there is a problem, a water bag may not always appear, so be observant of other behaviours that signal labour, such as tail switching, restlessness, the appearance of membranes or discharge, or a kink in the cow’s tail.