霉菌毒素吸附剂对玉米赤霉烯酮脱毒效果的评价Assessment on Detoxification Effects of Mycotoxin Adsorbent on Zearalenone
杨凡;张俊楠;王金全;吕宗浩;刘杰;郑云朵;
摘要(Abstract):
本试验旨在评价几种霉菌毒素吸附剂对玉米赤霉烯酮(ZEA)的体外和体内脱毒效果。分别采用pH 3.0和6.5的缓冲盐溶液为反应介质,分析比较市场上常见的12种霉菌毒素吸附剂对ZEA的体外吸附能力,依据分析结果选取体外吸附效果最好的3种吸附剂A3、A4和A6进行动物试验评价。选取健康三元杂交(杜×长×大)青年母猪40头,按日龄[(75±2)日龄]和平均体重[(29.19±0.76) kg]相近原则分为5组,每组8个重复,每个重复1头。对照组饲喂不含ZEA的基础饲粮,ZEA组饲喂添加1 mg/kg ZEA的基础饲粮,试验E1、E2、E3组饲喂在ZEA组饲粮基础上分别添加质量分数为0.2%的吸附剂A3、A4和A6的饲粮。预试期7 d,正试期21 d。通过比较不同组间猪只的生长性能、阴户宽度、器官指数、血清生化指标和血浆中ZEA含量及其代谢产物的残留水平评价吸附剂的体内脱毒效果。结果表明:1)12种霉菌毒素吸附剂在不同pH反应体系中对ZEA的体外吸附效果不同,其中吸附剂A3、A4和A6对ZEA的体外吸附效果最佳,在pH 3.0和6.5的反应介质中吸附率均达到90%以上。2)与对照组相比,饲粮中添加1 mg/kg的ZEA对青年母猪的平均日增重、平均日采食量、料重比,肝脏指数、脾脏指数、肾脏指数,血清中总蛋白、白蛋白、免疫球蛋白G含量及碱性磷酸酶(ALP)、谷氨酸脱氢酶(GLDH)、谷草转氨酶(AST)、谷氨酰转肽酶(GGT)和肌酸激酶(CK)活性均没有显著影响(P>0.05),但能显著增加阴户宽度、生殖器官指数、血浆中ZEA含量及其代谢物α-玉米赤霉烯醇(α-ZOL)和β-玉米赤霉烯醇(β-ZOL)含量(P <0. 05),并显著降低血清中雌二醇含量(P <0.05)。3)与ZEA组相比,饲粮中添加0.2%的吸附剂A4和A6能使生殖器官指数恢复至对照组水平。3种吸附剂对血清中雌二醇的含量均有一定恢复效果。吸附剂A4能显著改善阴户红肿并降低血浆中ZEA及其代谢物的含量(P<0.05)。由此可见,市场上不同霉菌毒素吸附剂对ZEA的体外吸附效果差异较大,体外吸附效果并不能完全代表体内脱毒效果,霉菌毒素吸附剂的脱毒效果评价需要体内与体外试验相结合进行。
关键词(KeyWords): 吸附剂;玉米赤霉烯酮;脱毒效果;体外评价;体内评价;生物标记物
基金项目(Foundation): 国家重点研发计划政府间国际科技创新合作重点专项(2016YFE0113300)
作者(Author): 杨凡;张俊楠;王金全;吕宗浩;刘杰;郑云朵;
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DOI:
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