Abstract: [Objective and Method]Eighteen male China merino(Xinjiang type) with similar weight and age about 12 months were divided into three groups,6 sheep for each group, the group Ⅱand group Ⅲ were added by 2 g and 4 g sodium dodecylbenzene sulfonate(SDBS)respectively in their low-protein diet, the group Ⅰ wasn't added by SDBS as control group, the purpose is to study the effect of SDBS on the digestion and metabolism of sheep. [Result]The results showed that the digestion in diet of the DM, OM, CP, cellulose and calcium in control group was 852.02±26.90, 791.25±23.89, 52.52±2.15, 264.50±13.72, 1.56±0.38(g/d),and when 2 g,4 g SDBS/d was fed, they were increased by 5.15;, 21.64;; 4.57;, 21.64;; 1.01;, 15.44;; 2.48;, 24.69; and 5.77;,19.87;. The apparent digestibility of DM and OM in control group was 66.51±0.02, 65.48±1.97, when 2 g,4 g SDBS/d was given, they were increased by 1.31;, 5.83; and 1.31;,6.34;. The group Ⅱ have no significant effect on the protein digestibility, but the group Ⅲ increased by 6.63; compared with the control group. The average body weight gain and the retention of N, Ca was 133.04±35.93, 5.57±0.72,(1.19±0.44)g/d, when 2 g, 4 g SDBS/d was given, they were increased by 4.57;, 7.84;;9.52;, 23.34;; 14.29;, 30.25;. [Conclusion]The present study showed that SDBS could increase the intake, increase the amount of the digestible DM, OM, CP and cellulose when added different SDBS in their low-protein diet, increase the apparent digestibility of DM, OM and cell ulose when 4 g/d was given, but there was no significant effect on the metabolism of Ca, P either 2 g/d or 4 g/d was given.

摘要： [目的]研究十二烷基苯磺酸钠对绵羊采食和消化代谢的影响.[方法]选取18只身体健康、体重相近、12月龄左右的中国美利奴细毛羊(新疆型)为试验动物,将其分为三组,6只/组,在低蛋白日粮条件下分别添加十二烷基苯磺酸钠0、2、4 g/d·sheep.[结果]对照组绵羊对干物质、有机物的采食量(g/d)为1 281.72±49.45、1 208.86±39.99,添加十二烷基苯磺酸钠2、4 g/d·sheep后,分别增加了3.76;、13.81;,3.20;和12.95;;对照组绵羊的干物质、有机物、粗蛋白、纤维素、钙的消化量(g/d)为852.02±26.90、791.25±23.89、52.52±2.15、264.50±13.72、1.56±0.38,添加十二烷基苯磺酸钠2、4 g/d·sheep后,分别增加了5.15;、21.64;,4.57;、21.64;,1.01;、15.44;,2.48;、24.69;和5.77;、19.87;;对照组绵羊干物质、有机物的消化率分别为66.51±0.02、65.48±1.97,添加十二烷基苯磺酸钠2、4 g/d·sheep后,分别增加了1.31;、5.83;和1.31;、6.34;,对照组对粗蛋白的消化率为62.77±3.72,添加十二烷基苯磺酸钠2 g/d·sheep组后,粗蛋白的消化率没有大的变化,而4 g/d·sheep组对粗蛋白的消化率增加了6.63;;对照组绵羊日增重、氮、钙保留量分别为133.04±35.93、5.57±0.72、1.19±0.44 g/d,添加十二烷基苯磺酸钠2、4 g/d·sheep后,分别增加了4.57;、7.84;,9.52;、23.34;,14.29;、30.25;.[结论]在低蛋白日粮中添加两种水平的十二烷基苯磺酸钠均可不同程度的提高绵羊采食量,提高绵羊对干物质、有机物、粗蛋白、纤维素的消化量,增加日增重、氮保留量,添加量为4 g/d时可显著提高绵羊对干物质、有机物、粗蛋白的消化率,但两种水平的十二烷基苯磺酸钠对钙、磷代谢无显著影响.