Recently, at the pig industry forum hosted by Shanghai Novartis, Professor Zhang Guihong, a pig disease expert from South China Agricultural University, analyzed the current epidemic situation of pig disease.
Moderator: The current pig price industry is quite good. I think the second wave of price increases is very strong now, which definitely has a lot to do with the disease. First of all, I would like to ask Teacher Zhang to help us analyze what kind of situation is the disease development from the end of last year.
Zhang Guihong: Everyone knows that the main reason for this wave of pigs is the increase in feed. Of course, pig swine disease is also a very important reason, otherwise our pig prices will not be as high as this. From November last year to the present, the most important issue for everyone may be the problem of piglet diarrhea. Many of us have problems with severe diarrhea in piglets in the delivery room. The status of the sows is good. There are also some cases where the pigs are raised and the adult pigs have diarrhea. This may be the most important aspect. The second aspect is related to our most primitive respiratory diseases, namely, blue ear disease, gasp disease, infectious pleuropneumonia, Haemophilus parasuis, streptococcus, etc. The problem is that these problems will exist more or less on every farm. On the other hand, it should be a problem of mycotoxins. This is also a problem that everyone is very concerned about, and the mycotoxin poisoning in the feed. But I think that attention can be, but sometimes it can't be too much. Because of the mycotoxin of the feed, the fungicide is added to the farm, and the fungicide is a good thing, but it cannot rely entirely on the mold inhibitor to solve the problem of mycotoxins. The perennial addition of anti-mold agents will inevitably lead to the lack of trace elements and minerals. Therefore, if you need to add anti-mold agents all year round, you must be sure to add some mineral trace elements and other things in the feed, which is very important. In turn, let's talk about the problem of diarrhea. In August, the Ministry of Agriculture held a very large meeting of veterinary experts. Each expert reported the relevant test results of their own laboratories. We have laboratories for Huazhong Agricultural University, China Agricultural University, South China Agricultural University, Harbin Institute of Research, and Qingdao People’s Research Institute. The test data were summarized and the results showed that 70%-80% of the current diarrhea should be caused by the epidemic diarrhea virus. Epidemic diarrhea, the field of many of our bosses has also been issued, but it is not as serious as this year. Moreover, we all vaccinated, but why is the effect so bad? Why is it still onset, and still so serious? As far as the current test is concerned, it is suspected that it is a type 2 gene, that is, there is a new variant strain. We used to be gene type 1 and now gene type 2. This is very similar to the diarrhea popular in Thailand, the Philippines, Vietnam and other places in 2010, almost all of this genotype. I think the diarrhea that we are currently popular is reasonable for Gene Type 2. Some bosses have doubts, we have not only got sick once, but also made a second time. So we tested both episodes, and our results showed that both pathogens were in it. Another problem is that we are talking about infectious gastroenteritis, and some fields are rotavirus or even swine fever. The incidence of different fields is not exactly the same, although all we see is a symptom of diarrhea. During our entire testing process, we also found that we have a large number of bacterial diseases in Guangdong Province, although the symptoms are diarrhea. They are all diarrhea, and the pathogens causing the disease are different. The cause of epidemic diarrhea this year is severely epidemic diarrhea virus type 2 is the main cause, and then secondary to other bacterial diseases. Instead of many teachers nowadays, this year's epidemic diarrhea is caused by the Boca virus. This is the main situation of the pig disease epidemic this year.
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