Abstract Preliminary research has suggested that in vitro dry matter disappearance (DMD) of some poor quality animal fodder materials can be improved by microwave treatment. Laboratory scale experiments revealed that dry matter percentage of lucerne hay increased by 1.7 % as microwave treatment time increased from 0 to 80 seconds. The in vitro DMD of lucerne hay increased by 14.9 % during the same microwave treatment. In addition it was also demonstrated that microwave treatment significantly increased starch digestion of oats compared to the control samples. These experiments were followed up with a larger sample experiment in which 25 kg bags of lucerne fodder were treated for 7.5, 15, 22.5 or 30 minutes in an experimental 6 kW microwave chamber. Dry matter percentage increased by 7.2 % as microwave treatment time increased from 0 to 30 minutes. Microwave treatment significantly increased DMD during an in vitro digestion study; however there were no significant differences between the various microwave treatment times. The 15 minute treatment resulted in the greatest increase in dry matter disappearance (5.9%). The crude protein retained in the digestion residues increased by 19.2% as microwave treatment increased from 0 to 30 minutes. These laboratory studies were followed up with an animal response study in which a Merino sheep group being fed the microwave treated lucerne gained 8.1 % of their initial body weight by the end of the trial compared to a 0.4% increase in body weight for the control group.

中文翻译：

---

微波处理对动物饲料的影响

摘要 初步研究表明，微波处理可以改善一些劣质动物饲料原料的体外干物质消失（DMD）。实验室规模的实验表明，随着微波处理时间从 0 秒增加到 80 秒，苜蓿干草的干物质百分比增加了 1.7%。在相同的微波处理期间，苜蓿干草的体外 DMD 增加了 14.9%。此外，还证明与对照样品相比，微波处理显着增加了燕麦的淀粉消化。在这些实验之后进行了更大的样本实验，其中在实验性 6 kW 微波室中处理 25 kg 袋苜蓿饲料 7.5、15、22.5 或 30 分钟。随着微波处理时间从 0 分钟增加到 30 分钟，干物质百分比增加了 7.2%。在体外消化研究中，微波处理显着增加了 DMD；然而，不同的微波处理时间之间没有显着差异。15 分钟的处理导致干物质消失的最大增加（5.9%）。随着微波处理时间从 0 分钟增加到 30 分钟，消化残留物中保留的粗蛋白增加了 19.2%。在这些实验室研究之后进行了一项动物反应研究，其中，在试验结束时，饲喂微波处理过的苜蓿的美利奴绵羊组增加了初始体重的 8.1%，而对照组的体重增加了 0.4% . 15 分钟的处理导致干物质消失的最大增加（5.9%）。随着微波处理时间从 0 分钟增加到 30 分钟，消化残留物中保留的粗蛋白增加了 19.2%。在这些实验室研究之后进行了一项动物反应研究，其中，在试验结束时，饲喂微波处理过的苜蓿的美利奴绵羊组增加了初始体重的 8.1%，而对照组的体重增加了 0.4% . 15 分钟的处理导致干物质消失的最大增加（5.9%）。随着微波处理时间从 0 分钟增加到 30 分钟，消化残留物中保留的粗蛋白增加了 19.2%。在这些实验室研究之后进行了一项动物反应研究，其中，在试验结束时，饲喂微波处理过的苜蓿的美利奴绵羊组增加了初始体重的 8.1%，而对照组的体重增加了 0.4% .