The effects of including thyme, celery or their mixture (as an alternative to salinomycin ionophore) on nutrient utilization and animal performance were evaluated using Barki lambs. Fifty-five lambs weighing 18.5 ± 1.1 kg and about 90 ± 5 days old were stratified into 5 treatment groups and fed: (1) a control diet of concentrates and maize fodder (600:400 on dry matter basis), or the control diet supplemented with (2) 15 g of thyme, (3) 15 g of celery, (4) 15 g of thyme and celery mixture, or (5) 1 g of salinomycin/lamb daily for 288 days. Additives significantly increased (P<0.05) both maize and total intakes, while thyme and thyme-celery significantly increased nutrient digestibility (P<0.05) compared with the control treatment. Celery, thyme-celery and salinomycin treatments decreased (P<0.05) serum cholesterol. Celery increased (P<0.05) final body weight, weight gain and average daily gain without affecting shrunk liveweight, hot carcass weight or dressing percent. Thyme-celery mix increased fat thickness of the rib cuts (P<0.001), while thyme, thyme-celery and celery treatments increased (P<0.01) the longissimus muscle area. Salinomycin, celery and thyme treatments increased (P<0.05) the lean proportion and decreased the fat proportion. Thyme, celery and thyme-celery treatments decreased (P<0.001) protein of meat, while thyme and thyme-celery treatments increased (P<0.01) carcass water holding capacity. Salinomycin, thyme and celery treatments decreased (P<0.01) meat brightness score, while celery treatment increased (P<0.05) redness of meat without affecting yellowness, chroma or hue of meat. Overall, results in the present study showed that these natural additives had similar effects to salinomycin, but further studies are necessary to validate the results and their mechanism of action.

使用Barki羔羊评估了百里香，芹菜或其混合物（作为盐霉素的离子载体的替代品）对养分利用和动物生产性能的影响。将55只重18.5±1.1千克，约90±5天大的羔羊分层分成5个处理组，并喂养：（1）浓缩饲料和玉米饲料的对照日粮（以干物质计600：400）或对照日粮每天补充（2）15克百里香，（3）芹菜15克，（4）百里香和芹菜混合物15克或（5）沙利霉素/羊羔肉1克，持续288天。玉米和总摄入量的添加剂均显着增加（P <0.05），而百里香和百里香芹菜显着提高了养分消化率（P<0.05）与对照组相比。芹菜，百里香芹菜和沙利霉素治疗降低了血清胆固醇（P <0.05）。芹菜增加（P <0.05）最终体重，体重增加和日均增重，而不会影响缩小的活重，hot体热重或敷料百分率。百里香-芹菜混合物增加了肋骨切口的脂肪厚度（P <0.001），而百里香，百里香-芹菜和芹菜的处理增加了最长肌面积（P <0.01）。盐霉素，芹菜和百里香的处理增加了瘦肉比例（P <0.05），减少了脂肪比例。百里香，芹菜和百里香芹菜的治疗减少了（P<0.001）肉蛋白质，而百里香和百里香芹菜处理增加了（P <0.01）cas体持水量。沙利霉素，百里香和芹菜处理降低了肉的亮度评分（P <0.01），而芹菜处理增加了肉的泛红（P <0.05），而没有影响肉的黄度，色度或色相。总体而言，本研究的结果表明，这些天然添加剂与沙利霉素的作用相似，但需要进一步的研究来验证结果及其作用机理。