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首页> 外文期刊>Mycotoxin Research >Fusarium toxin-contaminated maize in diets of growing bulls: effects on performance, slaughtering characteristics, and transfer into physiological liquids
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Fusarium toxin-contaminated maize in diets of growing bulls: effects on performance, slaughtering characteristics, and transfer into physiological liquids

机译：公牛日粮中被镰刀菌毒素污染的玉米：对生产性能，屠宰特性的影响以及向生理液体的转移

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摘要

The present feeding study was carried out to examine the effects of Fusarium toxin-contaminated diets on performance and slaughtering characteristics and on the transfer of the Fusarium toxins zearalenone (ZEN), deoxynivalenol (DON) and their metabolites into physiological matrices. A total of 61 bulls (483 ±46 kg) were fed with graded proportions of Fusarium toxin-contaminated feed over a period of 10 weeks. The total mixed rations (TMR) consisted of 47 % grass silage, 20 % press pulp silage, and 33 % concentrate on dry matter (DM) basis. Increasing toxin concentrations were achieved by the exchange of control maize with Fusarium toxin-contaminated maize in the concentrates. Thus, dietary toxin concentrations between 0.08 and 0.69 mg ZEN and 0.36and 8.31 mg DON per kg DM were covered by the four feeding groups. Based on increasing DM intake with increasing mycotoxin contaminations of the diet, the live weight gain and energy intake differed significantly between the groups. No effects were observed on slaughtering characteristics and organ weights. ZEN, a-zeralenol, (3-zeralenol ((3-ZEL), zeralanone, ct-zearalanol, (3-zearalanol, DON, and de-deepoxy-DON (de-DON) were simultaneously determined in urine, plasma, and liquor whereby quantifiable concentrations of ZEN, P-ZEL, DON, and de-DON were found in urine, of DON and de-DON in plasma, and solely of de-DON in liquor. Based on overall results it can be concludedthat current EU-guidance values for critical concentrations of DON and ZEN can be regarded as safe levels also for growing bulls. Urine and blood toxin residue levels can be used to assess exposure of bulls.
机译：目前的喂养研究旨在检查受镰刀菌毒素污染的日粮对生产性能和屠宰特性的影响，以及对镰刀菌毒素玉米赤霉烯酮（ZEN），脱氧雪茄烯醇（DON）及其代谢物向生理基质的转移的影响。在10周的时间内，共有61头公牛（483±46千克）用分级比例的镰刀菌毒素污染的饲料喂养。总混合日粮（TMR）包括47％的草料青贮饲料，20％的压榨果肉青贮饲料和33％的干物质精料（DM）。通过将浓缩玉米中的对照玉米与污染了镰刀菌毒素的玉米进行交换，可以提高毒素浓度。因此，四个饲喂组覆盖了每公斤DM 0.08至0.69 mg ZEN和0.36至8.31 mg DON的膳食毒素浓度。由于DM摄入量的增加和饮食中真菌毒素污染的增加，两组之间的活体重增加和能量摄入显着不同。没有观察到屠宰特性和器官重量的影响。同时测定了尿液，血浆和尿中的ZEN，α-玉米醇，（3-玉米醇（（3-ZEL），泽拉农酮，ct-玉米醇，（3-玉米醇，DON和de-deepoxy-DON）de）从尿液中，血浆中的DON和de-DON以及血浆中的de-DON中可以定量测定的ZEN，P-ZEL，DON和de-DON的浓度，根据总体结果可以得出结论，现行欧盟DON和ZEN的临界浓度的指导值也可被视为公牛成长的安全水平，尿液和血液中的毒素残留水平可用于评估公牛的暴露水平。

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