Jentsch W, Wittenburg H, Schiemann R
Arch Tierernahr. 1978 Jun;28(6):407-16. doi: 10.1080/17450397809426821.
In 136 complete metabolic periods of fattening bulls (live weight range 250 to 440 kg) comparative studies were performed on rations containing 30 to 40% straw previously subjected to different treatments. In addition, several rumen-physiological and blood indices were determined. Chopped straw without and with NaOH (6%) treatment and straw pellets without and with NPN-addition (ammonium bicarbonate and/or urea) during the pelleting process were used. No significant differences were found between comparable rations as to energy digestibility. The rations containing 60% straw revealed a higher evergy balance and, consequently, a higher energy utilization than could be expected from calculations on the basis of equations derived from previous experiments with adult steers. The importance of straw as energy source for ruminant feeding is highlighted.
在136个育肥牛的完整代谢周期（活重范围为250至440千克）中，对含有30%至40%经过不同处理的秸秆的日粮进行了比较研究。此外，还测定了一些瘤胃生理和血液指标。使用了未处理和经6%氢氧化钠处理的切碎秸秆，以及在制粒过程中未添加和添加非蛋白氮（碳酸氢铵和/或尿素）的秸秆颗粒。在能量消化率方面，可比日粮之间未发现显著差异。含有60%秸秆的日粮显示出更高的能量平衡，因此，其能量利用率高于根据先前成年阉牛实验得出的方程式计算所预期的水平。突出了秸秆作为反刍动物饲料能量来源的重要性。
