1. piglet paratyphoid: sporadic, mainly piglets and shelf pigs. The sick pig has a temperature below 465438 0℃, diarrhea, gray-black loose stools, and purple spots on the skin such as ear roots and abdomen. Subcutaneous autopsy showed massive muscle bleeding. In chronic cases, there are cellulose necrotizing enteritis and diffuse pseudomembrane on the surface of large intestine. Florfenicol is the first choice for treatment, and can be given to the whole group for prevention.
2. Atypical swine fever: sporadic. The body temperature of the sick pig is about 465,438 0℃. Needle bleeding can be seen in mucosa, anemia with a long course of disease, pale mucosa and skin, needle bleeding, swollen lymph nodes at autopsy, marble bleeding, needle bleeding can be seen in mucosa and kidneys such as throat. During the prevention and control period, the whole group was injected with single vaccine of classical swine fever urgently.
3. Erysipelas: sporadic, with a body temperature above 465,438 0℃, irregular finger pressing with skin erythema or rhomboid erythema, and diarrhea in the later stage. Autopsy showed splenomegaly, renal enlargement and bleeding, dark red surface and lymph node enlargement and bleeding. Treatment with penicillin or cephalosporin antibiotics is effective.
4. Swine streptococcosis: sporadic, with body temperature above 465438 0℃, purple spots on the skin under the abdomen, limbs and ears, nervous system symptoms such as screaming, twitching and spinning in sick pigs, purulent arthritis, endocarditis and purulent lymphadenitis in chronic pigs, and the course of acute cases is 2 days. Autopsy showed poor coagulation, swollen lymph nodes and myocardial hemorrhage. Treatment or prevention with penicillin or cephalosporin antibiotics is effective.
5. Porcine pneumonia: sporadic, mostly after stress such as climate change and long-distance transportation. The temperature of the sick pig is 465,438+0 ~ 42℃, and the skin has purple spots, especially the throat and neck are red, swollen and hard, and it is difficult to breathe. Chronic pig cough and purulent nose. Anatomy of the larynx and its surroundings, tissue edema, early bleeding point, late lobar pneumonia. Sulfanilamide drugs are effective in treatment, and olaquindox powder is effective in prevention.
6. Infectious pleuropneumonia: sporadic, often complicated or secondary to swine flu. The sick pig has a body temperature above 40℃, coughing, red skin, dyspnea in the later stage, and purple skin on nose, ears and hindquarters. Anatomy of both lungs, purplish red, interstitial filled with blood sample, surface covered with cellulose, serosa red, chest wall adhesion, pleural effusion. Sulfonamide antibiotics are effective in treatment and drug prevention.
7. Eperythrozoonosis of pigs: it is endemic. The body temperature of the sick pig is above 42℃, and the skin is red at the early stage of the disease, with purple spots on ears, limbs and tail at the middle stage and ear necrosis at the later stage. The urine is pale and hemoglobinuria. Microscopic examination showed that the red blood cells were deformed and ruptured. In clinic, oxytetracycline and doxycycline were injected, and the whole group took oxytetracycline or doxycycline for prevention.
The above contents are for reference only. It is recommended to contact the local veterinary station for diagnosis as soon as possible.