Conjecture of the culprit of Pig Disease at present

At present, pig disease is rampant in our country, and the overall manifestation is that the immunity of pigs is low, some people blame moldy feed, others blame management and breeding. I wonder if friends in the feed industry have considered whether this is the sin of genetically modified soybeans. . I hope someone will make a textual research and answer. "Editor's point of view: pig disease is indeed a difficult problem that often troubles farmers, and it is also an important factor affecting the development of the consumer market and the industry. Pig disease is becoming more and more complex, but treatment should not be the primary concern, because knowing the cause and preventing it in advance is essential. So the culprit of pig disease is feed quality, feeding management or barn conditions? Or, 'introducing sunshine into pigsty' is the 'sunshine project' that we should pay attention to? Welcome to speak actively! China Livestock editorial Department "--in our part of Henan Province, there has been a lot of corn lodging this year, and we have experienced continuous rainy days. Corn has already become moldy before it is picked, so it is directly related to corn mildew this time. Mildew remover should be added. Sows lack exercise and have low immunity. High feeding density and frequent vaccination of fattening pigs lead to low immunity due to increased stress-feed quality and feeding management are related to the occurrence of epidemic disease, but the variation of pathogen is also affected. Mycotoxin and virulent blue ear toxin are caused together. I don't think this can be explained in one or two sentences. Several people upstairs have talked about it in more detail, but I think the main reason lies in the breed of pigs, that is to say, the adaptability of pigs now, and the second is our feeding and management problems. -- after a long time, there will always be a scene. The landlord really knows how to guess. This conjecture will be tested and asked professionals to think about it. If you make it clear, it's a little difficult. It's hard to make a sentence clear. There are all reasons on my side-- veterinarians, feed factories and pig farmers are all responsible for the misuse of drugs.