Type of mold:
Common fungi species in feed are: Aspergillus, mainly produce aflatoxin (which is the most toxic aflatoxin B1), ochratoxin, etc .; animal feed Penicillium are mainly produce ochratoxin, penicillin, etc .; Fusarium Is mainly produced zearalenone, vomit toxins, T-2 toxins, fumonisin, etc .; ergot mainly produce ergot toxins. As many as mycotoxins, the harm to livestock and poultry is more serious, the pig farm should prom尽量防止霉变的发生
Xiaobian led everyone to come to know, the most common of several mold:
1, aflatoxin B1. Aflatoxin B1 is one of the most potent carcinogens in known chemicals. Aflatoxin B1 is stro对人畜有毒性,其毒性作用主要是肝损伤。是一类剧毒化学品,动物饲料黄曲霉毒素B1毒性比呕吐毒素毒性大30倍stro比玉米赤霉烯酮的毒性强20倍。
The acute toxicity of aflatoxin B1 is 10 times that of potassium cyanide and 68 times of arsenic. Aflatoxin B1 co被污染的食品主要是花生、玉米、大米、小麦、花生油等粮油类食品,而南方高温、高湿地区污染最严重。黄曲霉毒素B1可与动物DNA、RNA等结合,从而抑制DNA合成;其次是破坏动物免疫系统,损害动物肝脏。动物中毒,从食欲丧失、生产性能下降,到动物在饲料中中毒而导致死亡。
2, ochratoxin. Ochratoxin is mainly against animal liver and kidney. This toxin is mainly caused by kidney damage, a large number of toxins may also cause animal intestinal mucosal inflammation and necrosis. The most sensitive to the pig. OTA acute poiso宁反应为精神低落,食欲不振,体重减轻,直肠温度升高。消化系统紊乱,可见肠炎黏膜出血,甚至腹泻、脱水多尿,并伴有蛋白尿和糖尿病。
Pregnant mothers uterine mucosal bleeding, often miscarriage. After the poiso宁的病理改变为肾巴Sed,可见肾肥厚,呈灰色,表面凹凸不平,伴小泡,肾实质坏死,肾皮质细胞纤维化;近端肾小管功能退化,肾小管通透性退化,Concentration下降。OTA chronic外表光鲜宁显prolo凝血时间缩短,骨完整性差,肠易碎,肾损害。
3, zearalenone. Zearalenone mainly pollutes corn, wheat, rice, barley, millet and oats. The detection rate of maize was 45%, animal feed the highest toxic coNtent可达2909mg / kg;小麦的检出率为20%Ntent为0.364 ~ 11.05mg / kg。玉米赤霉烯酮具有雌激素作用,主要作用于生殖系统,可使畜禽和实验小鼠产生雌激素甲亢。
Pregnant animals (including humans) eat foods co含玉米赤霉烯酮可引起流产、死胎和致畸。猪对这种毒素更敏感。玉米赤霉烯酮作用的靶器官主要是雌性动物的生殖系统,对雄性动物也有一定的影响。急性中毒宁的情况下,对神经系统、心脏、肾、肝、肺都会有一定的毒性作用。其主要机理是会引起神经系统的兴奋,从而引起器官大量出血,使动物突然死亡。主要原因是由于雌激素水平过高造成的。
4, fumonisin. Fumonisin, also known as fumonisin, its main performance is a strong liver toxicity, resulting in liver edema, necrosis, animal feed decomposition of necrotic liver cells adhere to the cell membrane fragments into the blood circulation, lung macrophages phagocytosis, the release of neutral particle activator , Changes in pulmo毛细血管渗透性差,导致脉络膜连水肿。肺器官受到损害,很容易引起呼吸系统疾病综合征,对其危害极大。
5, T-2 toxins. T-2 toxins mainly damage the digestive tract, stimulate the digestive tract mucosa, causing extensive inflammation, ulcers, bleeding and necrosis. Manifested as pig loss or extinction, vomiting and diarrhea. Can also cause red blood cell damage to form anemia. T-2 toxin for the immune system in the spleen, animal feed thymus and lymph nodes also have a strong injury, can cause immunosuppression.
6, vomit toxins. Vomiting toxins and T-2 toxins mainly harm the same organ, pathogenicity and beyond. Its gastrointestinal mucosa with corrosive toxicity, causing widespread erosion of the digestive tract, ulcers, bleeding and necrosis. The same will cause immune system damage, resulting in immunosuppression. In addition, animal feed the vomit toxins can cause fetal malformations and cancer.