Becker K, Bartels S, Pfeffer E
Arch Tierernahr. 1984 Mar;34(3):219-25. doi: 10.1080/17450398409424673.
Lambs were fed diets containing 500 g straw, 50 g sucrose and 30 g minerals per day. The straw was untreated (A), wafered after addition of NaOH (B) or gassed with ammonia. Diets A and B, in addition contained urea, so that equal amounts of dietary N were offered. Digestibility of OM was increased by 12 units after addition of NaOH and by 8 units after gassing with NH3. As significantly more faecal N was excreted in animals fed diet C, it is concluded that N of NH3-treated straw is less available than of added urea. When NaOH-treated straw was fed, renal excretion of phosphorus was increased.
给羔羊喂食的日粮为每天含有500克秸秆、50克蔗糖和30克矿物质。秸秆未经过处理（A组），添加氢氧化钠后压制成片（B组）或用氨气熏蒸。A组和B组日粮还含有尿素，以便提供等量的日粮氮。添加氢氧化钠后，有机物消化率提高了12个单位，用氨气熏蒸后提高了8个单位。由于喂食C组日粮的动物排出的粪便氮显著更多，因此得出结论，经氨气处理的秸秆中的氮比添加的尿素中的氮更难利用。当喂食经氢氧化钠处理的秸秆时，肾脏对磷的排泄增加。
