The cause of animal and poultry corn poisoning
Corn is the main raw material for energy feed of livestock and poultry. It accounts for a high proportion of livestock and poultry diets, generally 50% to 70%. It is easy to mold if improperly stored (corn storage is mainly related to temperature, humidity, and clean conditions. When storing corn fever, the temperature reaches 23 °C ~ 32 °C, the humidity is above 80% ~ 85%, the amount of aflatoxin produced is high). The livestock and poultry mold corn poisoning is mainly caused by the aflatoxin produced by moldy corn in livestock and poultry. All kinds of livestock and poultry can occur in all seasons. However, due to differences in sex, age, and nutritional status, the sensitivity is also different. In general, young animals are more sensitive than adult animals, and male animals are more sensitive than female animals (except during pregnancy).
Aflatoxin is a toxic metabolite produced by Aspergillus flavus and Aspergillus parasiticus. Among them, aflatoxin is the most toxic. They can emit blue-violet and yellow-green fluorescence under the irradiation of ultraviolet rays. It is a variety of mycotoxins that have been discovered so far. Among the most stable ones, the organs that function are mainly the liver, which is the primary poison to the liver of all animals and can cause tumors and carcinogenesis in the liver, gallbladder, pancreas, urethra, and stomach.
Pathological examination of animal and poultry corn poisoning
Poultry Poultry After consumption of moldy corn, the liver has special damage. The necrotomy shows that the liver of the sick and dead bird is swollen, pale and pale, with bleeding spots; kidney enlargement and hemorrhage; hemorrhagic inflammation in the duodenum; gallbladder swelling; bleeding in the pancreas; leg muscles, chest skin and muscles Bleeding or jelly-like exudates are common. Chronically poisoned livers of poultry are hardly yellowish, with large needles with white needles on the surface; pericardium and abdominal cavity often contain water. Increased liver fat content, elderly disease, visible liver cancer nodules.
The pigs in the diseased pigs suffered from moldy corn poisoning, and there was a small amount of yellow or yellowish ascites in the abdominal cavity. The liver was swollen, yellow or shrivelled, and crisp. During the course of the disease, the elderly had hyperplasia of liver stromal tissue, the texture became hard, the liver volume increased, the cut surface was valgus, and the surface had gray-yellow necrosis. Gallbladder atrophy, less bile and thick. Gastrointestinal diffuse hemorrhage or ulcers, hemorrhagic inflammation in the intestine, and blood clots in the gastrointestinal tract. The kidneys are swollen, pale or light yellow. Systemic lymph node swelling, congestion or edema. The spleen usually does not change. Epicardial and endocardial bleeding was obvious and the fat was yellowish. Hemorrhage occurred in the subcutaneous muscles in front of the thigh and in the subscapular region.
After the diseased cattle, cows eat moldy corn poisoning, the most important lesions are hardened liver texture, grayish white necrosis on the surface, sometimes all yellow staining, hepatocyte degeneration, necrosis and hemorrhage; gallbladder atrophy, thick bile. Most ascitic fluids in ascitic fluid form ascites, hepatic degeneration, necrosis, and hemorrhage occur; kidneys appear lighter or yellowish.
Precaution
For this disease, the principle of prevention and treatment is emphasized, and the harvesting and storage of feed ingredients is strengthened to prevent mildew in corn. Strict control of livestock and poultry feeding into moldy corn feed is a fundamental measure to prevent this disease.
Early harvest corn harvest prematurely, high moisture content, easy to mold, poor quality of rice, low yield; harvest too late, corn stalks turn around, corn stalks withered, not only difficult to collect, but also easily wet moldy, affecting Quality and output. In general, the corn stems and leaves become yellow, the coats turn white, and the granules harden. It is more appropriate to pick up the plants when they do not wither. Harvesting of corn should be carried out after dew on sunny days, and a piece of land should be collected in mature land.
When the corn is picked up and dried in time, shelling and threshing should be carried out as soon as possible and the water should be dried in a timely manner. If it is too late to thresh, you can dry the corncobs first and then gradually thresh. When threshing, care should be taken not to damage the corn kernels, because the damaged corn kernels are prone to insects and mildew. When it is not possible to dry in the rainy days, the corn should not be threshed and piled. The corn sticks should be placed in a ventilated place and frequently turned to disperse the heat and heat and remove the sun exposure immediately when the weather is fine. The corn that can't be air-dried can also be rolled up and fastened by hanging in a ventilated, leak-proof eaves.
Sun dried storage corn must be sun dried to bag, cabinet or cylinder storage. After drying, the corn can be mixed with 5%~10% lime powder, and then loaded into the cabinet. Cylinder) and then sealed for storage. The feed store should be dry and ventilated, clean and moisture-proof, and cleaned regularly.
Mildew Treatment The moldy corn cobs picked from the harvest to the storage before storage should be individually threshed, cleaned and dried separately, and used as feed for livestock and poultry but unfit for human consumption. Those who have had mildew during storage must be singled out in time to prevent the spread of mold.
Fungus corn commonly used anti-mildew measures
Drying method The moldy corn is placed in the sun to dry, mainly using the characteristics of the different wavelengths of the sun light to achieve the purpose of detoxification, after a period of time, put ventilation in the dry place.
The clean water dipping method mixes the moldy corn and water in a certain proportion, stirs, stands, soaks for a period of time, wipes the particles with a rag, removes them and puts them in a ventilated place to dry, or grinds the corn, then adds 3 Times ~ 4 times the water, stirring, standing, soaking for about 30 minutes, then change the water, so repeated until soaked water becomes colorless.
Lime-water soaking method crushed the lime into a fine powder with a fineness of 120 mesh, and then added fresh water to make lime water with a concentration of 0.8%-1.2%. The mildewed corn is ground into granules and mixed with lime water in a ratio of 1:2. Stir for 1 minute to 5 minutes, and let stand for 2 hours to 4 hours. Pour out the water and rinse it two or three times with clean water.
The biological method utilizes lactobacillus for fermentation and converts aflatoxin B1 into less toxic aflatoxin B2 under the action of an enzyme. Using this method to treat feed can not only reduce toxins in feed, but also improve feed. The palatability.
The drug detoxification method adds de-molding agents to the feed. In the clinical practice, the mold-removing preparations such as mildew-removable etc. have specific super-adsorption effects on aflatoxin, etc., do not adsorb vitamins, amino acids and other nutrients, have high demycolytic efficiency, and also have mold and mineral resistance. The role of nutrition is the best choice for safeguarding feed safety. When used, it can be directly added to the feed to mix well. Add 1 kilogram to 1.5 kilograms per ton of feed without any residue on the livestock and poultry. The safety is good and can be used for a long time. Feeding methionine or maintaining a moderate excess of methionine can prevent aflatoxin poisoning.
Accelerate Freeze Dried Fig is made of selected ripe figs. The international advanced ultra-low temperature FD technology is adopted to sublime the water content of fruit, without changing the fruit color, shape and flavor. Retaining the original nutritional and medicinal components, without any additive, pigment, sweetener or preservative, it is the best-quality dried fruit. Accelerate Dried Fig won the Silver Medal at the [2017 China Characteristic Tourist Commodity Contest", as well as the [Gold Medal" of [Lishang Weihai" Most Characteristic Tourist Commodity.
Freeze Dried Fig
Fig
WEIHAI ACCELERATE BIOTECHNOLOGY CO, LTD , https://www.accelerfig.com