Emily Snyder

University of Saskatchewan | U of S · Western College of Veterinary Medicine

Bovine respiratory disease (BRD) is the leading cause of morbidity and mortality in North American beef cattle. Mannheimia haemolytica (Mh) is the bacterial pathogen most frequently isolated from cattle with BRD and the prevalence of antimicrobial resistance in this pathogen has been increasing. Administration of antimicrobials to prevent BRD is co...

Background Extensive drug resistance (XDR) is an emerging concern with Mannheimia haemolytica, and a variety of testing methods are available for characterizing in vitro antimicrobial susceptibility. Objectives To compare the concordance among disk diffusion, broth microdilution, and whole genome sequencing (WGS) for susceptibility testing of M. h...

The bacteria Mannheimia haemolytica and Pasteurella multocida contribute to bovine respiratory disease (BRD), which is often managed with antimicrobials. Antimicrobial resistance in these bacteria has been rare, but extensively drug-resistant strains have recently become common. Routine antimicrobial use may be driving this resistance. Resistance s...

Bovine respiratory disease (BRD) is the leading cause of morbidity and mortality in North American beef cattle, and thus a major economic and welfare concern of individuals involved in the beef cattle industry. The most common viruses implicated in BRD are Bovine Herpesvirus 1 (BHV-1), Bovine Respiratory Syncytial Virus (BRSV), Parainfluenza 3 (PI3...

It has long been presumed that cattle developing BRD tend to become sick from their own native strains of Mannheimia haemolytica. Previous work by others has demonstrated that the diversity of Mannheimia haemolytica, as evaluated by PFGE, within a pen of cattle remains high during BRD outbreaks. Prior to the development of whole genome sequencing (...

Bovine respiratory disease (BRD) is a major economic and welfare concern of the beef cattle industry. Various approaches to vaccination against the major viral pathogens have been investigated, including timing. It is thought that beef cattle entering feedlots may not be able to adequately respond to vaccination due to the stresses of shipping and...

Bovine respiratory disease (BRD) is a major economic and welfare concern of the beef cattle industry. Various approaches to vaccination against the major viral pathogens have been investigated, including timing. It is thought that beef cattle entering feedlots may not be able to adequately respond to vaccination due to the stresses of shipping and...

Bovine Respiratory Disease (BRD) is a major threat to animal health and welfare in the cattle industry. Strains of Mannheimia haemolytica (Mh) that are resistant to multiple classes of antimicrobials are becoming a major concern in the beef industry, as the frequency of isolation of these strains has been increasing. Mobile genetic elements, such a...

Bovine respiratory disease (BRD) is the leading cause of morbidity and mortality in North American beef cattle. Mannheimia haemolytica (Mh) is the bacterial pathogen most frequently isolated from cattle with BRD and the prevalence of antimicrobial resistance in this pathogen has been increasing. Administration of antimicrobials to prevent BRD is co...

Clinical rumen acidosis is an important cause of morbidity and mortality in both large and small ruminants. Feeding and management practices that lead to the consumption of large amounts of readily fermentable carbohydrates precipitate clinical disease. The fermentation of carbohydrates into volatile fatty acids and lactate causes acidosis (local a...