Schiemann R, Jentsch W, Wittenburg H, Hoffmann L
Arch Tierernahr. 1978 Jun;28(6):387-96. doi: 10.1080/17450397809426819.
During 63 digestibility periods of adult sheep, the digestibility of wheat and oat straw sujected to different kinds of treatment was compared. The straw was fed in the following forms: chopped, chopped and treated with 6% sodium hydroxide, pelleted without and with NPN-addition (ammonium bicarbonate and/or urea) during pelleting. Notwithstanding pressing temperatures over 90 degrees C and light moistening of the straw during pellet production, the addition of the two NPN-components did not allow to increase digestibility and energetic feed value. Two replications averaged an increase in energetic feed value by 42% due to NaOH-treatment. Energy digestibility went up by 39 to 55%, and energy concentration increased from 322 to 457 energetic feed equivalents (cattle) per kg DM. In addition, a number of rumen-physiological indices were obtained.
在成年绵羊的63个消化期内，对经过不同处理的小麦秸秆和燕麦秸秆的消化率进行了比较。秸秆以以下形式投喂：切碎、切碎并用6%氢氧化钠处理、制粒（制粒过程中不添加和添加非蛋白氮（碳酸氢铵和/或尿素））。尽管制粒温度超过90摄氏度且秸秆在制粒过程中轻度湿润，但添加这两种非蛋白氮成分并不能提高消化率和能量饲料价值。由于氢氧化钠处理，两次重复试验的能量饲料价值平均提高了42%。能量消化率提高了39%至55%，能量浓度从每千克干物质322个能量饲料当量（牛）增加到457个。此外，还获得了一些瘤胃生理指标。
