What is the reason why big pigs get erysipelas?

Erysipelas is an ancient disease. As early as the 1960s and 1970s, when China's pig industry was just starting, the disease was one of the common pig diseases. Because pigsty was generally on the ground at that time, and erythroderma mainly lived in soil, pigs were prone to this disease. Modern pig farms are hardened with cement, so this disease rarely occurs in groups, mostly sporadic. Age of onset. Why do big pigs get erysipelas easily? Each pathogen has a sensitive period to erythroderma pigmentosum. Although pigs of different ages will get erythroderma, fattening pigs aged 3-6 months are the most susceptible to infection. Infections have also occurred in pigs at other stages, but they are rare. Erysipelas can be divided into three types according to symptoms, and the mortality rate decreases step by step.

Pigs have no obvious symptoms since they appeared. The main symptom is high fever, sometimes reaching 42℃. The mortality rate of sick pigs is about 80%, and the undead pigs turn into subacute or chronic types. Anatomically speaking, the most important pathological change of acute erythroderma is systemic septicemia (septicemia refers to the acute systemic sensation caused by bacteria invading the blood circulation, growing and reproducing in the blood and producing toxins, swollen kidneys and spleen, and erythema on the skin surface of acute erythroderma). Many farmers only know the rhombic or square rash of subacute erythroderma, but they don't know that acute erythroderma won't have such a regular rash.

Subacute porcine lupus erythematosus. Because the characteristics of subacute swine erythema disease are very obvious, most farmers have recognized it. Subacute pig erythema, commonly known as "spark mark" or "ghost painting symbol", is characterized by regular patches on the skin, which are usually not fatal. This is a colloidal rash caused by subacute porcine lupus erythematosus. Chronic erythroderma of pigs. Chronic erythroderma in pigs has a long course of disease, mainly including arthritis (swelling of pig joints), endocarditis (general weakness of pigs, heart murmur during auscultation) and skin necrosis (generally in the back, shoulders, ears and tail, mainly manifested as necrosis, blackening and dryness).