In recent years, the problem of mycotoxins has increasingly jeopardized the health of livestock and poultry and reduced the resistance of livestock and poultry. It causes serious immunosuppression, reproductive failure of livestock and poultry, slow growth, and ineffective antibiotic treatment; it is becoming an invisible killer in the breeding industry. Conditions for mold growth: readily available carbohydrates (eg cereals), adequate moisture (more than 85% humidity), oxygen, suitable temperature (12-25 ° C).
The spring-summer turn is the most suitable condition for mold growth, producing a toxic metabolite, that is, mycotoxins. The hazard is manifested as:
1 Change the nutritional content of the feed.
2 reduce the use of nutrients by animals (down 10%).
3 produces mycotoxins, which induce various animal diseases.
4 tissue organs are damaged (kidney, liver, reproductive organs).
6 reproductive disorders: the mortality rate of embryos, increased proportion of abortion, external vaginitis, breast enlargement; decreased milk, decreased resistance of suckling piglets; increased sow elimination rate, reduced use years; boar semen quality decreased.
7 immunosuppression (mainly aflatoxin): immune system function is disturbed (low antibody titer, vaccine can not function normally, high susceptibility to disease).
8 feed intake decreased, gastrointestinal inflammation, growth rate decreased. Symptoms that can be seen in clinical practice include: sham senile estrus, pre-existing pus, gilt estrus; increased abortion rate in production sows, increased ratio of weak, stillbirth, and splayed feet, redness and swelling of piglets, weaning to mating The interval is prolonged; the mortality of pigs in nursery houses increases; the respiratory diseases of middle and large pigs are serious, and the soft stools and squats are pulled; the pigs vomit, refuse to eat, the feed intake decreases, and the age of fattening pigs is delayed; blue ear disease, garden Circulating virus, pseudorabies, swine fever, chlamydia, erythroblastosis, toxoplasmosis, etc. are often troubled; the immunization program in the farm is unchanged, and the vaccine is administered on time, but the antibody level of the herd is not gone, and the disease often occurs; The formula is the same, but the feed quality is good.
Therefore, at the turn of the spring and summer, it is very important to manage the mildew and control (de-spray) of feed.
1 First of all, we must choose good raw materials. Any moldy feed should not be purchased no matter how cheap the price is. Otherwise, it will be small because of the small loss. The main feed, such as corn, is best to choose the pellets for processing, instead of choosing Powder that has been processed by others, because the processed powder cannot understand the quality of its raw materials on the one hand, on the other hand, some raw material suppliers generally reduce the loss, usually after the good raw materials are sold out, the quality remains. The problem is processed into powder for sale to small farmers.
2Secondly, the mold adsorbent with guaranteed quality is added to the feed: Due to the wide variety of mycotoxins, there is currently no adsorbent that can completely adsorb all kinds of toxins. Therefore, the farm should start from controlling mold growth and properly use mycotoxin adsorption. Agent. It is necessary to choose a mold adsorbent with strong adsorption capacity and relatively small addition amount, which can selectively adsorb mycotoxins without affecting nutrient absorption. For example, at present, relatively good on the market are “enhanced mold elimination†and Tengjun “mildew. ", Baianming", "detoxification" and so on. It is recommended to be added to the feed of male sows and piglets 60 days old, and to all feeds with suspected feed quality problems.
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