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Blackleg: A pasture nemesis
Features, Livestock, Vet advice

Blackleg: A pasture nemesis

Vet Advice with Dr. Ron Clarke

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Blackleg is an acute, febrile, highly fatal disease of cattle, sheep and goats caused by Clostridium chauvoei characterized by swellings with pockets of trapped air that produce crepitation (crackling) over affected areas. Although blackleg can affect any muscle in the body, including the heart and diaphragm, heavy muscles of the front and hind limbs are […] Read more
Although the efficacy of blackleg vaccines is occasionally disputed in North America, there are few veterinary practitioners who would be comfortable convincing producers to stop using the vaccine.
Beef Cattle, Vet advice

A vaccine that saved the cattle industry

Vet Advice with Dr. Ron Clarke

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Blackleg, a disease of many ruminants, is universal. It is most commonly seen in sheep, cattle and goats. Outbreaks have been reported in farmed bison and deer. The acute nature of the disease makes successful treatment difficult. Although the efficacy of commonly used blackleg vaccines has been disputed by the occasional academic based on the […] Read more
The search continues for TB and JD vaccines
Beef Cattle, Cow-Calf, Features

The search continues for TB and JD vaccines

Animal Health: Treatment for the elusive diseases grows closer

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We could be lucky and find our vaccine candidates for bovine tuberculosis and Johne’s disease within a month, or it could take a year and a half. We hope within a two-year window we will have candidates ready to test out in the field.” These encouraging words come from Dr. Andrew Potter, CEO at the […] Read more
Precondition calves regardless of weaning time
Cow-Calf, Livestock

Precondition calves regardless of weaning time

The well-prepared, preconditioned calf rewards the producer, the buyer and, most importantly, the calf

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Now is the time to start preparing calves for marketing with a sound preconditioning program developed in concert with your veterinarian. Drier weather may mean selling this year’s calves earlier, so preconditioning your calves sooner rather than later makes good sense. Do not wait and, out of frustration, call the trucker and just send the […] Read more
Pre-breeding vaccinations for cows and bulls
Beef Cattle, Cow-Calf, Features

Pre-breeding vaccinations for cows and bulls

Health with Heather Smith Thomas

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Some diseases affect reproduction, interfering with the cow’s ability to carry a calf to term. It’s best to try to prevent these diseases by making sure cows and bulls have adequate immunity before breeding season. These vaccinations will vary, depending on specific risks in a certain herd, and timing will vary, depending on the calving/breeding […] Read more
Practical ways to reduce our use of antibiotics
Features, Livestock

Practical ways to reduce our use of antibiotics

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The livestock industry has made great strides in addressing the topic of antimicrobial usage and indirectly lessening the opportunity for the formation of antibiotic-resistant bacteria. From veterinarians setting treatment protocols to cow-calf and feedlot producers implementing effective coping strategies, progress is being made in minimizing the incidence of disease and thus reducing the need for […] Read more
Intranasal vaccines get around maternal antibodies
Cow-Calf, Features, Livestock

Intranasal vaccines get around maternal antibodies

Animal Health: Maternal antibodies unpredictable


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Calves are born without fully functioning immune systems, making them reliant on passive immunity from maternal antibodies for disease protection. As a result, we assumed for a long time that vaccinating calves at an early age was a complete waste of time and money as the maternal antibodies would attack any pathogens introduced in the […] Read more
Immunostimulant Zelnate cleared for Canada
Livestock, News, News Roundup

Immunostimulant Zelnate cleared for Canada

Animal Health: News Roundup from the September 2016 issue of Canadian Cattlemen

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Bayer HealthCare Animal Health’s Zelnate DNA Immunostimulant introduced in the U.S. last fall is now approved and available in Canada. It is the first of its kind among a new generation of products for cattle that kick-start the innate immune system when given at the time, or within 24 hours, of a disease challenge. According […] Read more

Canadian Cattlemen Presents: Depth of Field

Glacier Farmmedia Podcast

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AGCanadaTV: In case you missed it; your national ag news recap for Aug. 22, 2025

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