BRD is the general term for any disease of the upper respiratory tracts (e.g., bronchitis, rhinitis, tracheitis) or lower respiratory tracts (e.g., pneumonia). It is known as a “disease complex,” stemming from three factors usually working in combination: stress, a viral infection and a bacterial infection. BRD normally impacts cattle in the first four weeks after weaning, and it can be fatal.
Symptoms of BRD:
