The typical symptoms of the disease are red and swollen neck, respiratory difficulties, dispersed morbidity in fat pigs and high mortality. How to prevent it? Actually it is still very simple. The author explains this disease to everyone with this article. Pig lung disease, also known as many farmers? lockjaw wind? , is caused by infection of pigs with the bacterium Pasteurella multocida. Pigs at all stages of life are susceptible to infection, especially those in the fattening stage. The bacteria can infect a wide range of animals, including humans. Infection in pigs is called porcine pneumonia, and in cattle it is called bovine failure (hemorrhagic septicemia). Rabbits, chickens, ducks and sheep are also susceptible.

Infected livestock are the main source of infection, and feces, secretions, and contaminated feed, drinking water, and utensils are the means of transmission. Pathogens brought in by coughing and sneezing are most likely to infect other animals and may also be transmitted through skin wounds and blood-sucking insects. Therefore, there are two main reasons for the high prevalence of this disease in the summer months: stress from hot and humid environments, and infections caused by flies and mosquitoes that carry the pathogen. In addition, unhealthy factors such as chronic malnutrition, long-distance transportation, parasites, and poor sanitation can promote the development of this disease. Based on the symptoms, swine pneumonic plague can be classified into three types: acute septicemia, acute type and chronic type. The most acute blood type:septicemia symptoms, often sudden onset and rapid death. Some pigs are infected and eat well on the first night and see no symptoms.

The next morning they were found dead in their pens. The main cosmetic symptoms are redness, swelling and heat in the throat below the neck, which is difficult to reach with the hand, and severe redness that extends to the ears and chest. With a little chronicity, there will be a high fever of 41℃-42℃, wasting food and unable to lie down on the ground, or take the sitting position of a dog, stretching its neck to breathe, and white foam will come out of the nose and mouth. After one to two days, the mortality rate is close to 100%. Necropsy reveals acute hemorrhagic edema of the throat with much translucent yellowish fluid. Acute type:Chronic infection of swine lung disease, untreated death within 4-6 days. This is a common pig lung disease. The body temperature is usually between 40℃ and 41℃. At first it is dry cough, then it becomes wet cough. It is difficult to breathe and there is sticky snot, which may sometimes be bloody. Although there is no obvious redness or swelling on the neck or chest, the pig is painful on contact and there are some purple spots or small hemorrhages on the skin. Eventually he was too thin to lie down and died of asphyxiation and exhaustion. Autopsy revealed one or both sides of fibrinous pneumonia with enlarged, solid lung lesions that were dark red or grayish-red, distinctly different from the normal pink color. Chronic type:Chronic swine pneumonia is mostly characterized by symptoms of chronic pneumonia, poor spirit, poor appetite, persistent coughing and wheezing, and a small amount of thick nasal secretion, which gradually becomes thinner. If not treated in time, the patient will die in about two weeks due to physical exhaustion, with a mortality rate of about 65%.