BACTERIAL RESPIRATORY DISEASE OF CATTLES

Bovine Respiratory Disease Complex (BRDC) is one of the most important diseases in all over the world. It affects the lower respiratory tract and is responsible for economic losses due to mortality, treatment costs. BRDC has a multifactorial factors such as infectious agents, host, and age, breed, genetic, nutrition, climate, commingling of animals and especially crowded transport. Especially transportation has a close relationship with an increased risk of BRDC because it is responsible to weaken immune system. Therefore, Mannheimia haemolytica, Pasteurella multocida, Histophilus somni, Mycoplasma bovis, and  Bibersteinia trehalosi are most common BRDC pathogens that are still tried to develop diagnostic techniques and control strategies. In addition, good nutrition, vaccination and reducing stress factors, complying with biosafety rules and ensuring adequate air circulation are important factors in the control of respiratory system disease in cattles.