Cattle Contagious Bovine Pleuropneumonia(CBPP) Facts You Should Know
After cattle are infected with Mycoplasma bovis, they can continue to carry the pathogen for several months or even years, becoming the main source of infection of contagious bovine pleuropneumonia. The disease is mainly transmitted between herds through the respiratory tract, but can also be transmitted through close contact, the reproductive tract, or inhalation of milk.
Symptoms of contagious bovine pleuropneumonia:
Contagious bovine pleuropneumonia can be as short as 8 days and as long as 4 months. Cattle with slow symptom development often develop a short dry cough when stimulated by cold air or cold drinks in the morning or when they exercise. Those with rapid development of symptoms will start with an increase in body temperature of 0.5-1°C. As the course of the disease progresses, the symptoms become more apparent. According to its process, it can be divided into acute and chronic types.
Acute type: Symptoms are obvious and characteristic, body temperature rises to 40-42°C, presents persistent fever, dry cough, rapid breathing with groaning sound, dilated nostrils, outstretched forelimbs, and extremely difficult breathing. Reluctance to move or lie down due to chest pain, was abdominal breathing. Coughs become more frequent, often with painful short coughs, weak and weak, low and moist. Sometimes serous or purulent nasal fluid flows out, and the visible mucosa is cyanotic. In addition, lower chest and wattle edema, loss of appetite, cessation of lactation, decreased urine output and increased specific gravity, alternating constipation and diarrhea can also be seen.
The body condition of the sick animal weakens rapidly, the eyeballs are sunken, the eyes are dull, the breathing is more difficult, and they often die of suffocation. The acute course of the disease generally takes 5 to 8 days after the symptoms become apparent, and about half of them die. Some animals suffer from chronic diseases, and the entire acute course is about 15-60 days.
Chronic type: most of them turn from acute to chronic, and some of them take chronic course from the beginning. Except for weight loss, most of them have no obvious symptoms. Occasional dry short cough, there may be a solid sound area on percussion of the chest. The digestive function is disturbed, and the appetite is capricious. This kind of animal can gradually recover under good care and proper treatment, but it often becomes a carrier. If the lesion area is extensive, the affected animal will become weaker and weaker, and the prognosis will be poor.
Diagnosis and Differentiation of contagious bovine pleuropneumonia
Comprehensive diagnosis based on epidemiological data, clinical symptoms and pathological changes. If there are typical chest lesions, a preliminary diagnosis can often be made by combining epidemiological data and clinical symptoms. Diagnosis depends on serological and bacteriological examinations. The disease should be diagnosed differently from bovine pasteurellosis and bovine tuberculosis.Or use the CBPP Rapid Test Kit to detect disease in Cattle.
Pasteurellosis: Pasteurellosis in sick cattle is usually acute, with a short duration of disease, sepsis, and bleeding points in internal organs and tissues; marble-like lesions occur in the lungs, and the interstitium does not widen significantly.
Tuberculosis: Bovine tuberculosis mainly manifests low-grade fever, cough, and progressive weight loss. Dissection of lung lesions can reveal typical tuberculosis nodules, which can be distinguished by serological tests and allergic reactions in the early stage.