Bergner H, Püschner A, Müller J, Marienburg J
Arch Tierernahr. 1978 Jun;28(6):417-25. doi: 10.1080/17450397809426822.
Ammoniated straw pellets were produced from pure wheat straw in a pelleting press reaching temperatures of more than 90 degrees C, 4% NH4HCO3 being added as degradation agent. Digestibility trials with sheep gave 389 energetic feed equivalents (cattle) per kg straw dry matter. This value exactly agrees with the formula Energetic feed equivalents (cattle)/kg DM = 650 -6x x = % crude fibre in dry matter which had been reported first in 1973 by Bergner and Marienburg (Arch. Tierernährung 23, 423 [193]) for chemically treated straw pellets. When testing the digestibility of the same straw pellets charge in the Animal Nutrition Division of the Dummerstorf-Rostock Research Centre for Livestock Production, considerably lower values were found which would allow to calculate energy concentration to amount to 310 energetic feed equivalents (cattle)/kg DM (see Arch. Tierernährung Vol. 28, page 393). The reason for this 20% lower feed value of the straws pellets lies possibly in the reversibility of the degradation effect when using ammoniacal media. The digestibility of the straw pellets had been tested in the Berlin research Institution one year earlier than at the Rostock Institute. The possible causes of the reversibility of the ammoniacal degradation effect are discussed.
氨化秸秆颗粒由纯小麦秸秆在制粒机中生产，制粒过程温度超过90摄氏度，并添加4%的碳酸氢铵作为降解剂。用绵羊进行的消化率试验表明，每千克秸秆干物质的能量饲料当量（以牛为单位）为389。这个数值与公式“能量饲料当量（以牛为单位）/千克干物质 = 650 - 6x，其中x = 干物质中粗纤维的百分比”完全相符，该公式由伯格纳和马林堡于1973年首次报道（《动物营养学报》23卷，423页[193]），用于化学处理的秸秆颗粒。在达姆施托夫 - 罗斯托克畜牧生产研究中心动物营养部对同一批秸秆颗粒进行消化率测试时，得到的数值要低得多，据此计算出能量浓度为310能量饲料当量（以牛为单位）/千克干物质（见《动物营养学报》第28卷，第393页）。秸秆颗粒饲料价值降低20%的原因可能在于使用氨性介质时降解效果的可逆性。秸秆颗粒的消化率在柏林研究机构进行测试的时间比在罗斯托克研究所早一年。文中讨论了氨化降解效果可逆性的可能原因。
