Do you know how big is the harm of mold toxins in feed? – Aquatic Forum – China Animal Husbandry Website – A useful animal husbandry website
Investigation and research showed that the amount of mold toxin contamination in feed is very common and severe. Each region, feed raw materials and mixed feed products have mold toxin pollution, with a detection rate of 70% to 100%, and the toxin over-surbiture rate determined according to the feed hygiene standard can reach 20% to 80%. Due to the wet climate environment, the natural environment is more damp, and the feed mold is serious than the northern region, and the feed mildew rate is several or even several times higher than the north. At the same time, due to a large amount of toxins in the feed, the amount of toxin content is getting higher and higher, and the animal is digestive, which will cause poisoning or even death. Due to the shortest season of shrimp, it is almost general phenomenon in which mildew is almost common in combination with mildew fills in the feed.
Feed raw material mildew
In Nan ginger blue shrimp, Fatan Bin’s research results showed that feeding of busedxin B1 would affect shrimp growth, feed conversion And apparent digestibility, reduce the increase of shrimp, decreased survival rates and leech across disease. When the AFB1 concentration is higher, the infected shrimp can resist the pathogenesis, the susceptibility of the crustal disease is high, and there are additional damage to the skeleton of shrimp. Another experiment showed that when the level of yellowlaxin B1 in the feed was below 20 ug / kg, it fed only 10D, and the shrimp gain will slow down, and the mortality rate is ts. The harm of xanthumic toxin to shrimp is mainly caused by liver, which belongs to hepatotoxin, and continuous intake of xanthae toxin will accumulate in the liver, which leads to liver swelling, pale, brittle and bile ductous epithelial hyperplasia. The synthesis of xyllass and cholesterol inhibits the synthesis of phospholipids and cholesterol, affecting the transport of lipids from the liver, thereby depositing fat in the liver, causing liver fat infiltration, fat.
The phenolic pancreatic lesions
A scholar observed tissue lesions damage to the shrimp varyrical pancreas at the AFB1 level, and the increase of the concentration of the contrast of the contrast is aggravated. There will be blood cell infiltration in the initial lumen of inflammation, which will develop into fiber denaturation and tissue necrosis and its edge liver tubular cell necrosis, and will change the liver pancreatic pipe structure, directly affect the absorption storage and secretion of the liver. Severe inflammation and atrophy occur, and lose normal function.In addition, after the shrimp contains feed toxin contaminated feed, toxins inhibit its immune system and reduce its resistance to disease. In the immune system of shrimp, the immunoactive components are mainly composed of phaneously-immunized phagocytes, and therefore, when their number is reduced, the disease resistance is lowered, thereby enabling the body to easily infect the disease. The effect of the xilexin toxin to the immune system is reflected in inhibiting the growth of some specific cells, such as complement protein C4 and some lymph factors, while inhibiting the phage effect of macrophages, indirectly affects the production of subsequent B lymphocyte antigens, which in turn reduces animal pair The resistance of the disease. As mentioned above, the contamination of mold toxins in the feed is generally existent, so that the infringement of shrimp on the mold toxin is inevitable. The liver is the main detoxification and detox organ of the animal body. In the course of breeding, the most important thing to reduce mold toxin on shrimp is to protect the liver, enhance the liver detoxification and detoxification. Lysozyme, superoxide dismutase and alkaline phosphatase are important physiological indicators reflecting animal immune function. Lysozyme is an important part of an animal non-specific immune system; superoxide dismutase is an important antioxidant enzyme, its activity is closely related to the immunity of organisms; alkaline phosphatase is not only closely related to phosphorus, but also Important detoxification system.
The liver in the digestive system of shrimp is the most important
Test results show that the addition of bile acids in all the shrimp feed of Nashama can significantly increase the lysozyme and superoxide dismutase in serum. And alkaline phosphatase activity. This suggests that bile acids can increase the detoxification capacity, antioxidant capacity and non-specific immune function of Nanbin shrimp, thereby increasing the anti-disease and survival rate of shrimp. Therefore, adding bile acids in shrimp feed can reduce mold toxin to the shrimp pancreas and the damage of the entire body.
The use of bile acids and the liver status of shrimp is significant
The article is from Shandong Longxuan’s official website.
Feed mold toxin, shrimp voices, shrimp immunity, shrimp
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