Sriskandarajah N, Kellaway R C
Br J Nutr. 1984 Mar;51(2):289-96. doi: 10.1079/bjn19840033.
Effects of sodium hydroxide treatment on intake and digestion of straw organic matter (OM), and microbial protein synthesis were examined in comparison with untreated and treated straws. Intakes (kg dry matter (DM)/d) of untreated, NaOH- and sodium carbonate-treated straws were 5.21, 7.04 and 6.48 respectively and intakes (kg/d) of digestible organic matter (DOM) for the respective diets were 2.57, 3.73 and 2.98 respectively. NaOH-treated straw ranked higher than untreated straw in intakes of DM and DOM (P less than 0.01). The proportion of DOM intake that was apparently digested in the rumen was 0.74, 0.77 and 0.66 on untreated, NaOH- and Na2CO3-treated straws respectively. Although the amount of bacterial N leaving the abomasum was higher with NaOH-treated than with untreated straw (74.6 v. 56.8 g/d, P less than 0.01), efficiencies of bacterial N synthesis were not different between these treatments (28.6 v. 31.5 g bacterial N/kg OM apparently digested, P greater than 0.05). The live-weight gain which the NaOH-treated straw could support was predicted to be 350 g/d and it was concluded that a protein supplement would have provided further increase in production in diets based on NaOH-treated straw.
将氢氧化钠处理的秸秆与未处理和碳酸钠处理的秸秆相比较，研究了其对秸秆有机物（OM）摄入量、消化率及微生物蛋白质合成的影响。未处理、经氢氧化钠和碳酸钠处理的秸秆摄入量（千克干物质（DM）/天）分别为5.21、7.04和6.48，相应日粮可消化有机物（DOM）的摄入量（千克/天）分别为2.57、3.73和2.98。经氢氧化钠处理的秸秆在干物质和可消化有机物摄入量方面高于未处理的秸秆（P小于0.01）。未处理、经氢氧化钠和碳酸钠处理的秸秆在瘤胃中明显消化的可消化有机物摄入量比例分别为0.74、0.77和0.66。虽然经氢氧化钠处理的秸秆从真胃排出的细菌氮量高于未处理的秸秆（74.6对56.8克/天，P小于0.01），但这些处理之间细菌氮合成效率并无差异（每千克明显消化的有机物合成28.6对31.5克细菌氮，P大于0.05）。预计经氢氧化钠处理的秸秆能支持的日增重为350克，得出的结论是，在以经氢氧化钠处理的秸秆为基础的日粮中添加蛋白质补充剂会进一步提高产量。
