为了研究番茄渣对绵羊生长性能和瘤胃发酵参数的影响，选择体重40 kg左右的萨福克×阿勒泰杂交母羊40只，随机分为4组，每组10只，对照组、低水平番茄渣组、中等水平番茄渣组和高水平番茄渣组分别饲喂含0、30%、40%和50%番茄渣的全混合日粮。预试期9 d，正试期44 d。结果表明：1）与对照组相比，饲喂中等、低水平番茄渣不影响绵羊平均日增重（P>0.05），饲喂高水平番茄渣显著降低了绵羊平均日增重（P<0.05）；饲喂低水平番茄渣显著提高了绵羊干物质采食量（DMI）（P<0.05），饲喂中等水平番茄渣极显著提高了绵羊DMI（P<0.01），饲喂高水平番茄渣极显著降低了绵羊DMI（P<0.01）；饲喂中等、低水平番茄渣不影响绵羊料重比（P>0.05），但饲喂高水平番茄渣显著提高了绵羊料重比（P<0.05），与饲喂中等水平番茄渣的绵羊差异不显著（P>0.05）。2）饲喂番茄渣不影响瘤胃液pH平均值（P>0.05）；饲喂低水平番茄渣不影响瘤胃液氨态氮含量（P>0.05），而饲喂中等、高水平番茄渣极显著降低了瘤胃液氨态氮含量（P<0.01）；饲喂中等、低水平番茄渣不影响饲喂后3、6和9 h时乙酸、丙酸和总挥发性脂肪酸浓度（P>0.05），但饲喂高水平番茄渣显著提高了饲喂后9 h时的乙酸浓度、饲喂后6和9 h丙酸浓度（P<0.05）；饲喂番茄渣均可降低乙酸/丙酸，其中饲喂高水平时效果显著（P<0.05）。本试验条件下，用30%番茄渣等比替代饲粮中苜蓿干草可提高绵羊生长性能，并可以改善瘤胃发酵。

This study was conducted to determine the effects of tomato pomace (TP) on growth performance and rumen fermentation parameters of sheep. Forty Suffolk × Aletai crossbred ewes were randomly divided into four groups (ten sheep for each group), and sheep in control group (CON), low TP group (LTP), middle TP group (MTP) and high TP group (HTP) were fed total mixed rations containing 0, 30%, 40% and 50% TP, respectively. The pre-trial lasted for 9 days, and the trial lasted for 44 days. The results showed as follows: 1) compared with control group, average daily gain (ADG) of sheep was not affected by feeding low or middle TP (P>0.05), while feeding high TP significantly decreased ADG of sheep (P<0.05); feeding low and middle TP significantly increased dry matter intake (DMI) of sheep (P<0.05 or P<0.01), while feeding high TP significantly decreased DMI (P<0.01); feeding low and middle TP did not affect feed/gain (P>0.05), while feeding high TP significantly increased feed/gain (P<0.05), which had no difference with that of feeding middle TP (P>0.05). 2) The mean of rumen fluid pH was not affected by feeding tomato pomace (P>0.05); ammonia nitrogen (NH₃-N) content was not affected by feeding low TP (P>0.05), but was significantly decreased by feeding middle and high TP (P<0.01); the concentrations of acetate, propionate and total volatile fatty acid (after feeding for 3, 6 and 9 hours) were not affected by feeding low and middle TP (P>0.05), but the concentrations of acetate (after feeding for 9 hours) and propionate (after feeding for 6 and 9 hours) were significantly increased by feeding high TP (P<0.05); acetate/propionate was decreased by feeding TP, and the effects of feeding high TP were significant (P<0.05). Under the conditions in the present study, the substitution of dried alfalfa hay by TP in the diet at 30% can improve growth performance and rumen fermentation.