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首页> 外文期刊>Animal Science Journal >Changes in the concentrations of fumonisin,deoxynivalenol and zearalenone in corn silageduring ensilage
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Changes in the concentrations of fumonisin,deoxynivalenol and zearalenone in corn silageduring ensilage

机译：玉米青贮青贮中伏马菌素，脱氧雪腐烯醇和玉米赤霉烯酮浓度的变化

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We assessed the production of the mycotoxins fumonisin, deoxynivalenol and zearalenone during the ensiling of corn.Corn was harvested at yellow-ripe or full-ripe stage and separated into the stem and leaf parts and the ear parts, includingbracts. Each material was ensiled under five conditions: (1) no fungus added, anaerobic conditions; (2) no fungus added,aerobic conditions; (3) mycotoxin-producing fungus added, anaerobic conditions; (4) mycotoxin-producing fungus added,aerobic conditions; and (5) mycotoxin-producing fungus added to autoclaved material, aerobic conditions. After 40 daysof ensilage, we analyzed the silage fermentative quality and mycotoxin concentration. The fermentative quality of allmaterials was good in treatments (1) and (3), because the pH < 4 increased the lactic acid content preventing mycotoxinlevels from increasing. In treatments (2) and (4), fermentative quality of all materials was poor, and mycotoxin levels wereslightly increased. In treatment (5), fermentative quality was poor, and mycotoxin levels were increased remarkably. Theseresults indicate that mycotoxins are not produced under anaerobic conditions and are hardly produced under aerobiccondition during the ensiling of corn. Our findings suggest that almost all mycotoxins in corn silage are producedpre-harvest.
机译：我们评估了玉米收获过程中霉菌毒素，伏马菌素，脱氧雪腐烯醇和玉米赤霉烯酮的产量。玉米在黄熟或全熟阶段收获，分为茎和叶部分以及耳部，包括br片。每种材料在以下五个条件下进行青贮：（1）不添加真菌，厌氧条件; （2）无真菌，有氧条件; （3）添加产生真菌毒素的真菌，无氧条件; （4）添加产生真菌毒素的真菌，有氧条件; （5）在有氧条件下，将产生霉菌毒素的真菌添加到高压灭菌的材料中。青贮饲料经过40天后，我们分析了青贮饲料的发酵质量和霉菌毒素浓度。在处理（1）和（3）中，所有材料的发酵质量都很好，因为pH <4会增加乳酸含量，从而阻止霉菌毒素水平增加。在处理（2）和（4）中，所有材料的发酵质量均较差，霉菌毒素水平略有提高。在治疗（5）中，发酵质量较差，霉菌毒素水平显着增加。这些结果表明，在玉米灌浆过程中，霉菌毒素不是在厌氧条件下产生的，在有氧条件下几乎不会产生。我们的发现表明，玉米青贮饲料中几乎所有霉菌毒素都是在收获前产生的。

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