Winter is the season of high incidence of viral diseases in pig farms. Three typical diseases common in winter are foot-and-mouth disease, swine flu and viral diarrhea. Diarrhea virus is not a single disease, but a general term for infectious gastroenteritis, epidemic diarrhea and rotavirus diarrhea. Viral diarrhea is one of the diseases with acute onset, rapid spread, high mortality and poor treatment effect, which has caused great losses to pig farms. The author bought it from a friend before: "How to judge the delivery room, pig diarrhea and viral diarrhea?" Today, through an example we met a few days ago, the author suggested to pig farmers to quickly distinguish viral viruses from bacterial diarrhea on the production line and take effective measures to minimize losses.

Viral diarrhea pig, can it be saved? It is worth noting that the five measures have greatly improved the survival rate. There are 300 sows in the affected pig farms, and the 2-day-old piglets produced by one sow were found to have diarrhea symptoms on June 5438+1October 4. Although treated with antibiotics, piglets born by one sow and two separate sows also began to have diarrhea. Three days later, piglets in the same delivery room developed a large area of diarrhea, with a total incidence of about 80%. The pig farm was managed by a keeper at the same time, so it was managed by a keeper from June 5438 to1October 7, and the incidence rate reached about 80%. Although treated with anti-muscle antibiotics, about 20 piglets still die every day, and the mortality rate before admission is about 50%. Later, the author was found, diagnosed and put forward treatment suggestions.

1) clinical symptoms after I entered the pig farm, I found that the sick piglets were rough, crusted, severely dehydrated, sunken eyes, lost meat, and discharged feces with dilute water. The excrement is mixed with small foam and undigested coagulant, which gives off a serious fishy smell. After catching the pig, the sparse feces flowed out along the anus, and the sick pig was depressed and lost appetite. Some piglets are eating, sick cubs 2. Gastric mucosal bleeding can be seen in 5 dissected sick pigs. Undigested coagulated blood and edema in the stomach, thin and transparent small intestine wall, a large amount of gas and yellow water in the intestine, edema of mesenteric lymph nodes, and no obvious lesions in other organs such as lung, spleen, kidney and liver.

Combined with the incidence of pig farms and the clinical symptoms and pathological changes of infected pigs, viral diarrhea can be diagnosed. After autopsy, the intestinal contents and lymph nodes of sick pigs were collected and sent to the pig disease diagnosis center for laboratory examination. The results showed that the infection of porcine epidemic diarrhea virus was consistent with the author's preliminary diagnosis. Viral diarrhea pig, can it be saved? It is worth noting that the five measures have greatly improved the survival rate. Key points of differential diagnosis between viral diarrhea and bacterial diarrhea 1) Judging the onset time Some people say that there are many bacteria in summer and viruses are abundant in winter. Because high temperature and high humidity in summer are more suitable for bacterial reproduction and cold environment in winter is more suitable for virus transmission, there are bacterial diseases in summer and viral diseases in winter. The pig farm mentioned above is in winter, so it is suspected to be viral diarrhea.