Casey N H, Wessels R H, Meissner H H
Department of Animal and Wildlife Sciences, Faculty of Biological and Agricultural Sciences, University of Pretoria, Republic of South Africa.
J S Afr Vet Assoc. 1994 Dec;65(4):160-3.
The effects of salinomycin (20 mg kg-1 feed), monensin (33 mg kg-1 feed) and a daily rotation of these ionophores, on average daily gain (ADG), average daily feed intake (ADFI) and feed conversion efficiency (FCE) were investigated in 60 steers (273 kg) over an 84-day feedlot period. Individual feed intakes and weight gains were recorded. The data were fitted to linear regressions with individual animals as replicates, from which ADGs, ADFIs and FCEs were calculated. Means of parameters of the control, salinomycin, monensin and rotation treatments were respectively ADG (kg): 1.56, 1.74, 1.58 and 1.66; FCE (kg DM/kg): 5.83, 5.43, 5.53 and 5.38; ADFI (kg): 9.10, 9.43, 8.83 and 8.90; final weight (kg): 402, 419, 407 and 413. Salinomycin showed the greatest improvement in gain, whereas monensin did not affect gain and tended to decrease feed intake. The rotation programme did not result in added benefits above those that could be obtained with a single ionophore (salinomycin), although feed efficiency tended to increase.
在为期84天的育肥期内，对60头体重273千克的阉牛研究了盐霉素（20毫克/千克饲料）、莫能菌素（33毫克/千克饲料）以及这两种离子载体每日轮换使用对平均日增重（ADG）、平均日采食量（ADFI）和饲料转化效率（FCE）的影响。记录了个体采食量和体重增加情况。数据以个体动物作为重复样本拟合线性回归方程，据此计算ADG、ADFI和FCE。对照、盐霉素、莫能菌素和轮换处理组各项参数的均值分别为：ADG（千克）：1.56、1.74、1.58和1.66；FCE（千克干物质/千克）：5.83、5.43、5.53和5.38；ADFI（千克）：9.10、9.43、8.83和8.90；末重（千克）：402、419、407和413。盐霉素的增重效果改善最为显著，而莫能菌素对增重无影响，且有降低采食量的趋势。尽管饲料效率有提高的趋势，但轮换方案并未带来比单一离子载体（盐霉素）更多的益处。
