After years of being involved in various disease outbreaks in cow-calf herds, I estimate about 80 percent of them have nutritional deficiencies or toxicities as part of the root cause of the disease outbreak.
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Copper deficiency in spring can lead to reproductive losses

It has been a relatively busy spring for our Disease Investigation Unit at the Western College of Veterinary Medicine in Saskatoon. The cases we’ve seen include scenarios of lead toxicity, abortions and several cases of unusual disease syndromes in young calves including neurological disease and blindness. After years of being involved in various disease outbreaks […] Read more


Problems arise in control of external parasites in beef cattle

External parasites, such as biting or sucking lice, create an obvious problem with cattle. All lice cause irritation and this irritation causes rubbing, licking, itching and hair loss. Itchy cattle will rub on fences, buildings, trees and other fixtures and can even damage these structures. It seems to be occurring more frequently despite the frequent […] Read more


Most lameness cases are assumed to be foot rot until proven otherwise, but treating all cases of lameness with antibiotics can be a mistake.  |  File photo

Lameness major reason for antibiotic use in feedlot cattle

Foot rot is one of the most common reasons a cow-calf producer will treat a cow with antibiotics. In 2019, Dr. Cheryl Waldner and co-workers at the Western College of Veterinary Medicine in Saskatoon published a paper on antimicrobial use in western Canadian cow-calf herds in the Canadian Veterinary Journal. Lameness was the top reason […] Read more

Social distancing common when managing calf health

Social distancing and self-quarantine are two new terms that have come into use with the COVID-19 pandemic. While these practices have become central to everyday life, the concepts are not new to those who deal with young calves. Although we can’t make sure that every animal stands two metres away from its immediate neighbour, we […] Read more


Greenfeed may be linked to milk fever

Cattle producers faced many challenges with forage and crop production last year. Many areas had poor hay crops and the weather didn’t co-operate at harvest for many grain crops. As a result, many beef cattle herds have relied heavily on baled cereal crops, such as oats or barley, as a major component of their winter […] Read more


Despite all we know, debate still exists as to whether BRD is actually a communicable disease. Do calves spread disease within the group from one animal to another? This seems like a fairly fundamental question, but the research has not been definitive.
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New study points finger at pen-mates infected with BRD

Bovine respiratory disease is one of the most important economic diseases in the beef cattle industry. It is almost overwhelming trying to keep up with the publications devoted to this subject. There are numerous studies on the microbial flora of the nasal passages of cattle, antimicrobial resistance surveys, vaccination trials, therapy studies and many others. […] Read more


It’s fairly easy to diagnose Johne’s disease in an individual cow, but it’s harder to know what to do with the rest of the herd if the individual diagnosis is positive.  |  Paula Larson photo

Testing beef herds for Johne’s disease can be difficult

Every year, I seem to write another article about Johne’s disease. It is one of the most common topics of phone calls and questions that I receive from veterinarians and producers. Johne’s disease is a relatively easy disease to diagnose in an individual cow either via clinical signs or at post mortem. The characteristic symptoms […] Read more