We all know that feed has a shelf life. Generally, the shelf life of feed is six months. Different seasons and different products have different shelf life. Therefore, we should watch the shelf life of feed before using feed, because expired pig feed will bring serious harm to breeders. So, what is the harm of using expired feed? Let's listen to the detailed introduction of pig feed manufacturers
The main hazards of expired feed are as follows:
1. Harmful microorganisms and mycotoxins exceed the standard and have an impact on animal health
The problem of expired feed is mildew. The main molds causing feed mildew are Aspergillus flavus, Aspergillus ochraceus, Fusarium graminearum, Penicillium spreading and so on. After feeding, the production performance of animals will be reduced, which will do harm to animals in many aspects, even death. For example, aflatoxin is a highly toxic substance, which has a strong destructive effect on animal liver. The symptoms of mildewed feed poisoning vary with the degree of mildewed feed, the amount of food taken by animals and the length of time taken. Gastroenteritis and diarrhea occur in mild cases, abortion occurs in pregnant cows, and neurological symptoms and even death occur in severe cases.
2. Expired feed will cause loss of nutritional value and flavor deterioration
Under the external environment of high temperature and humidity, the expired and moldy feed can also stimulate the activities of lipase, amylase, protease and other hydrolases. Under the synergistic effect of mold, feed enzyme and other factors, the decomposition speed of nutrients in feed is accelerated, and the nutritional value is seriously reduced. For example, some molds can significantly reduce the content of B vitamins, vitamin E or some amino acids in infected grains. Long term feeding of this kind of feed can cause some nutritional deficiencies. Expired moldy feed can also worsen sensory properties, such as pungent smell, sour taste, abnormal color, thick and dirty feeling, which seriously affect palatability.
3. It is easy to cause rancidity of fat and oil in feed
If there is fat in the feed, it is easy to cause rancidity of fat and oil in the feed due to season, temperature and other reasons. Feeding these feeds will cause livestock stress, and some organic acids, free acids and other small molecular substances in rancid or expired feeds will stimulate the nervous system of livestock and poultry, causing excitement of livestock and poultry, resulting in the bad habit of jumping circle or not sleeping.
Through the detailed introduction of pig feed manufacturers, we know that expired feed has many hazards, so the breeders must attach great importance to it, and must not be good at advocating the use of expired feed. In the process of breeding, feed should be reasonably purchased and properly preserved according to the number and feed intake of breeding animals, so as to avoid mildew and waste of feed.