Canadian dairy producers face significant economic losses from diarrhea in young calves, a common and costly health problem in herds across the country. Industry discussions stress that restoring fluid balance is central to managing scouring in pre-weaned animals because loss of water and electrolytes from loose stools can rapidly lead to dehydration and impaired recovery. Supplemental oral fluids formulated to correct electrolyte and acid-base imbalances are a key tool in treatment protocols and timely administration supports calves through the critical early phase of illness.

In addition to fluid therapy, veterinarians and producers often evaluate the use of antimicrobials in calves showing systemic illness, with careful consideration directed at minimizing unnecessary drug use while addressing bacterial involvement when diagnosed. Ancillary treatments including anti-inflammatory agents are also considered as part of a comprehensive response to severe cases, with the objective of reducing the duration of illness and supporting overall calf health.

Management practices on farms that influence diarrhea incidence include colostrum delivery immediately after birth, cleanliness of housing and observation of calves for early signs of dehydration. Ensuring newborn calves receive sufficient colostral immunity remains a foundational component of broader herd health programs, as passive immunity reduces susceptibility to enteric pathogens that commonly cause diarrhea. Environmental hygiene and pen sanitation are emphasized to reduce pathogen load and limit the spread of infectious agents.

Producers are encouraged to assess each calf’s hydration status and response to supportive care regularly. Severely dehydrated animals may require more intensive intervention, including intravenous fluids, if oral methods are not sufficient. Protocols that integrate early detection, prompt fluid replacement and appropriate adjunct therapies contribute to better growth rates, fewer secondary complications and lower mortality rates in affected calves.

Comprehensive approaches that combine prompt treatment with preventive management reduce the burden of diarrhea on dairy operations and improve the performance of replacement heifers. Veterinarians remain an integral part of devising herd-specific strategies to manage scours, monitor health trends and refine protocols that protect both individual animals and overall herd productivity.