Mycotoxins-the invisible killer of animal husbandry
Release time:
Sep 21,2018
This summer, due to the frequent landing of typhoons, making even rainy days increased, especially in the northeast, from 5From late August to late August, ten days and a half months of even rainy days appear one after another, with stuffy, hot and damp air. In such an environment, the corn of many farmers has mildew, and most of the corn on the shelf has a face (mildew spot), while most of the farmers use this kind of corn. During the threshing process, the mildew spot is rubbed and crushed, part of it is blown away by the wind, and part of it is attached to the surface of the corn. Because the mold attached to the surface of corn is invisible to the naked eye, it is often ignored by farmers and causes huge losses.
Mold can cause fungal diseases in chickens, such as avian aspergillosis, candidiasis and so on.
Mycotoxins are secondary metabolites produced by molds during their growth, which are highly toxic to animals, humans and crops. The toxins produced by various molds are different, and the degree of harm caused is also different. Among them, the most toxic are: aflatoxin, ochratoxin, humima toxin, zearanone, vomiting toxin, T2Toxins, etc. These toxins are like ghosts around the animal husbandry, causing immeasurable harm to the development of the entire animal husbandry industry and even human health.
Once the animal ingested feed containing mycotoxins, will cause varying degrees of damage, collectively referred to as mycotoxin poisoning.
Low concentrations of mycotoxins can affect the production performance and immune function of chickens, damage the organs of animals, and induce a variety of diseases; high concentrations can directly lead to the death of chickens.
Excessive intake of mold and abnormal manifestations of mycotoxins
1.Slow growth, slow feeding, leg claw color hair light, white, poor pigment deposition.
2.Diarrhea, fodder, enteritis, coccidia repeated disease, increased susceptibility to Escherichia coli, the use of a large number of enteritis, coccidia drugs invalid, seriously affecting feed remuneration;
3.Severe immunosuppression leads to the fact that after vaccine immunization, the antibody in the body cannot reach the due titer, and it is easy to be infected with atypical Newcastle disease and other viral diseases in the later stage, and the mortality rate of chickens in the later stage is greatly increased.
4.Chickens appear liver and kidney problems, serious appear spotted kidney, autopsy appearance is very like kidney transmission branch;
5.The chickens are not afraid to eat large feed particles, but only finer particles and powder. Some technicians think it is small intestinal coccidiosis as soon as they see the "hook material", but they can't see obvious coccidiosis symptoms after autopsy, and the small intestinal coccidiosis is not good after several courses of medicine;
7.Individual size, out of the slaughter weight light;
8.Laying hens lay eggs decreased, eggshell white, with salpingitis, virus drugs no effect;
9.Chicken spit water phenomenon, the appearance is like Newcastle disease performance;
10.Extend the neck mouth breathing phenomenon;
Prevention and Control Measures of Mold and Mycotoxin
1.Raw material control:Must strengthen the corn bulk density, moisture, broken grain inspection.
2.Scientific Storage:Control moisture, temperature and humidity to avoid contact with wet ground walls.
3.Add fungicide:By adding organic acids or organic acid salts and their esters, to destroy mold cells and cell membranes to inhibit or kill mold, or destroy mold intracellular enzyme system, prevent its metabolism, prevent mold reproduction.
Treatment of Mold
1、 Adsorptive demildew agent: commonly used mycotoxin adsorbent raw materials are: yeast cell wall extract, activated carbon, silicate aluminate minerals and cholestyramine.
22. Blowing and sifting during threshing.
3Flowing water washing (ozone effect is better)
4UV irradiation.
Treatment of mycotoxins
1Adsorption: At present, there are many kinds of mycotoxin adsorption products, and the quality is uneven, so we should choose carefully!
2Biodegradation: Some probiotics can break down some mycotoxins.
3Protecting liver and kidney: Traditional Chinese medicine that protects liver and kidney can be used to strengthen liver and kidney function to detoxify and detoxify.
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