Also known as: fièvre de transport
Le complexe respiratoire bovin (BRD), souvent appelé fièvre de transport, est une pneumonie multifactorielle du bovin dans laquelle le stress, une infection virale et des bactéries opportunistes se combinent pour provoquer une maladie respiratoire aiguë. C'est la principale cause de morbidité et de mortalité dans les parcs d'engraissement et chez les animaux récemment transportés. Les animaux atteints présentent fièvre, abattement, écoulement nasal, toux et respiration rapide.
Bovine respiratory disease complex is the most economically important disease of beef and dairy cattle, especially young, recently weaned, or transported animals. It results from the interaction of stress, viruses, and bacteria.
Viral agents such as bovine herpesvirus-1, BVD virus, parainfluenza-3, and bovine respiratory syncytial virus damage the airways, allowing bacteria like Mannheimia haemolytica, Pasteurella multocida, and Histophilus somni to invade the lungs. Stressors include weaning, transport, mixing, and weather.
Fever, depression, reduced appetite, drooping ears, nasal and ocular discharge, coughing, and increased or labored breathing. Death can occur quickly in severe cases.
Based on history, clinical signs, and lung sounds; confirmed with nasal swabs, bloodwork, lung ultrasound, or necropsy in fatal cases.
Early antibiotics, anti-inflammatory drugs, and supportive care. Prompt identification and treatment greatly improve outcomes.
Vaccination, low-stress handling, gradual weaning, good ventilation, biosecurity, and metaphylactic antibiotics in high-risk groups.
This content is for educational purposes and is not a substitute for professional veterinary advice. If you are worried about your pet, contact your veterinarian.
