Cattle pasteurella disease overview

Definition and characteristics of

Cattle pasteurella disease, also known as hemorrhagic septicaemia, mainly caused by pasteurella, is an acute, thermal sexually transmitted diseases, found in cows. The pathogen of the disease is to kill pasteurella, this is a kind of both ends obtuse, central slightly convex spherical short coli, gram negative, do not form spores, no flagella and cannot move. Under natural conditions, resistance is weak, the bacteria can only survive 2 ~ 3 days in dry air, and can survive in the blood, excreta and secretion from 6 ~ 10 days. Corruption in the body can survive 1 ~ 3 months, but in direct sunlight or in high temperature environment will die immediately. General disinfectant in a few minutes to kill it.

Route of Transmission

Bull pasteurella transmission diversity, mainly through the respiratory and digestive tract infected animals, the surrounding environment and feed water, and thus infect healthy animals. In addition, also may through the skin mucous membrane damage or spread of blood-sucking insect bites. The disease can occur throughout the year, but in the higher incidence of climate change is big, muggy, environmental factors such as poor health, nutrition, lack of can also lead to the occurrence of the disease.

clinical signs and symptoms

Bull pasteurella disease clinical symptoms include high fever, pneumonia, acute gastroenteritis, and extensive hemorrhage of the internal organs. According to the different clinical manifestations, and they can be divided into type three kind of blood type, edema and pneumonia. Losing blood type found in buffalo, characterized by high fever, spirit is depressed, loss of appetite, abdominal pain, diarrhea, mixed with blood in the stool and stench. Edema is common in yak, inflammatory edema occurred in areas such as the characteristics of head and neck and throat, difficulty breathing. Pneumonia is characterized by shortness of breath, dry cough, nose with stick purulent nasal fluid, etc. Course is usually 2 ~ 5 days, and may be sudden death.

Pathological changes

After pathology anatomy, visible to internal bleeding is widespread, and the area is larger, the mucous membrane, especially in areas such as the REINS. After subcutaneous tissue may be serous infiltration, cut out deep yellow transparent liquid. Can be obviously catarrhal inflammation of respiratory tract mucous membrane lesions, gastric and intestinal mucosa associated with hemorrhagic catarrhal lesion characteristics. Lung organ swelling, pleural adhesions may arise, pulmonary mucosa, cannot successful separation.

Diagnostic methods

Diagnosis based on clinical symptoms and pathological changes, diagnosis should be combined with laboratory diagnosis. Laboratory diagnosis including bacteriology inspection, such as sterile acquisition dead cow disease, such as the blood, spleen, lymph nodes, to cultivate and dyeing, find specific serum type of bacteria. Also note the differential diagnosis with other similar diseases, such as anthrax, emphysematous gangrene.

Prevention and control measures

Prevention, Suggestions to strengthen management and enhance the animal's resistance, ventilation is carried out to the barn to environment and disinfect regularly, pay attention to the daily state of the cow, early found early treatment. In the area to isolate the sick animals, timely for environmental disinfection, and the cattle on health protection measures. For frequent outbreak area, can regularly vaccinated cattle hemorrhagic septicaemia vaccine.

To sum up, cattle pasteurella disease is an acute infectious disease caused by certain bacteria, its prevention and control should be combined with good breeding management and timely medical intervention. Considering the high mortality of the disease and the diversity of the route of transmission, farmers should be on alert, and take corresponding prevention and control measures.