Detecting respiratory disease in calves early – when treatment is most effective – should start by examining the head and facial features, according to veterinarian Tiago Tomazi with Merck Animal Health.
In the past, it was believed there was no point to give injectable respiratory vaccines before about 4 months of age, because they would be inactivated by maternal antibodies. A recent study proves that’s not the case.
Drs. Grant Dewell and Mike Apley, respectively, and Extension nutritionist Paul Beck weigh in on some things they believe contribute to the disease and how you can stem its development from the farm to the feedlot.
Every re-treatment puts additional stress on calves and reduces profit margins due to the additional medicine and labor costs. On the other hand, waiting too long to re-treat can increase the number of sick calves.
Kansas State College of Veterinary Medicine researchers addressed this important question in a recent study. Dr. Miriam Martin summarized the study results and what the team learned for Bovine Veterinarian readers.
While environmental factors and host genetics heavily influence BRD morbidity rates, understanding the genomic and molecular biology tools also can improve our understanding of pathogens and beneficial microorganisms .