中文摘要：

本试验旨在研究酶制剂对饲料原料中微量元素释放效率的影响。选取玉米、小麦、大麦、高粱、麸皮、次粉、豆粕、棉粕、DDGS等9种常用饲料原料,利用体外消化模型模拟动物胃肠道消化过程,研究植酸酶、木聚糖酶、β-葡聚糖酶及三种复合酶处理对原料中Fe、Cu、Zn和Mn元素的释放效率。结果表明：植酸、木聚糖和β-葡聚糖等抗营养因子对饲料原料中微量元素的消化吸收具有一定的抑制作用,相应的酶制剂处理,可改善饲料原料中微量元素释放效率,其中植酸酶在饼粕类饲料原料中表现的较为明显,木聚糖酶在能量饲料原料中对Fe、Zn元素的释放有较好的效果,β-葡聚糖酶可提高谷物类饲料中Zn、Fe、Cu元素的释放,且对棉粕中Fe、Cu、Mn的有效利用有较大促进作用。复合酶处理在数值可改善各种原料的微量元素释放效率,但对各种元素的影响未表现出明显的协同作用。

英文摘要：

This experiment was condu cted to study the effects of different feed enzymes（phytase,xylanase,β-glucanase and compound enzymes） on releasing efficiency of trace elements（Fe,Cu,Mn and Zn） in 9 commonly used ingredients by using in vitro model which simulates the pig’s digestive process.The results showed as follows：Anti-nutritional factors such as phytase,xylanase and β-glucanase would inhibit the digestion and adsorption of trace elements,by using corresponding enzyme,could improve the releasing efficiency,phytase performs more obvious in soybean meal,xylanase has better releasing efficiency of Fe and Cu in energy feed and β-glucanase could improve the availability of Zn、Fe and Cu.The Compound enzymes could improve the releasing efficiency of trace elements in various ingredients numerically,but the effects showed no significant synergy.