Lower DD prevalence in high immunity cows

By Steve Mason on

Researchers at the University of Guelph reported the results of a study designed to evaluate whether the ability of dairy cows to mount an immune response could be related to susceptibility to digital dermatitis (DD) infection. They showed that cows demonstrating a strong antibody-mediated response to an intramuscular antigen challenge had a lower prevalence of DD than cows showing an average or weaker response.

Which trimming method is best?

By Steve Mason on

Gerard Cramer’s research group recently surveyed published research studies that examined the effects of hoof trimming on animal behaviour, physiologic changes and efficacy in reducing lameness. Although these studies revealed that hoof trimming may initiate a stress response, change behaviour, improve components of weight bearing, and reduce lameness in specific environmental conditions, few of the studies described the trimming method used in enough detail to determine effects of method on any of these outcomes.

Best management practices for footbathing

By Steve Mason on

Nigel Cook recently reviewed current footbath practices used in dairy herds, questioned the mechanism by which footbaths function, and reviewed the available scientific literature for guidelines to assist in the creation of best practices for their use. Based on that review, a summary of his recommendations for footbath design and management is presented.

Sara Pedersen’s Recommended DD Treatment Strategy

By Steve Mason on

Sara Pedersen, a prominent UK veterinary consultant who specializes in hoof health, presented her recommendations for digital dermatitis (DD) control at the recent UK Cattle Lameness Conference. Her ‘blitz’ treatment approach is designed to break the cycle of environmental contamination of the bacteria that cause DD, recognizing that these Treponemes only survive in slurry for up to 24 hours.

How to Judge a Hoof Trim

By Steve Mason on

While a good hoof trimming program is an essential component of lameness prevention, poor trimming technique can create lameness. The Lameness Committee of the American Association of Bovine Practitioners (AABP) has produced a fact sheet aimed at helping veterinarians and producers to objectively assess a herd hoof trimming program.

Early DD Detection and Treatment

By Steve Mason on

Prevention of DD focuses on biosecurity, maintaining good barn hygiene and routine foot bathing. Treatment of DD infections is typically only done by hoof trimmers at their infrequent visits—usually by applying antibiotic and bandaging for a few days. But, because new infections can rapidly advance, early detection and treatment is necessary to minimize new outbreaks of active lesions.
Over the past few years, researchers at the University of Calgary’s Faculty of Veterinary Medicine have been working to develop a practical way to routinely identify and treat painful DD lesions in the milking parlour.