伊维菌素与局部使用有机磷对育肥牛犊的成本效益比较
Comparative cost-effectiveness of ivermectin versus topical organophosphate in feedlot calves.
作者信息
Bauck S W, Jim G K, Guichon P T, Newcomb K M, Cox J L, Barrick R A
出版信息
Can Vet J. 1989 Feb;30(2):161-4.
A study was conducted in a commercial feedlot in western Canada to evaluate the impact of treatment with ivermectin versus a topical organophosphate on growth rate and feed efficiency in calves entering a feedlot at an average 275 kg liveweight.A total of 9527 head of cattle was used. Variables measured included average daily gain, average days occupation, and feed conversion.Ivermectin treated animals gained an average 0.08 kg per day more than those treated with topical organophosphate. In addition, they required an average 0.23 kg less feed/kg gain. Based on an average 227 kg of gain, this would result in 11 fewer days occupation and 52.3 kg less feed for ivermectin treated animals. This equaled a net benefit of $7.04 per head over treatment costs for ivermectin treatment versus topical organophosphate.
在加拿大西部的一个商业饲养场进行了一项研究，以评估伊维菌素治疗与局部使用有机磷杀虫剂对平均体重275千克进入饲养场的犊牛生长速度和饲料效率的影响。总共使用了9527头牛。测量的变量包括平均日增重、平均饲养天数和饲料转化率。接受伊维菌素治疗的动物比接受局部有机磷杀虫剂治疗的动物平均每天多增重0.08千克。此外，每增重1千克，它们平均少消耗0.23千克饲料。基于平均227千克的增重，接受伊维菌素治疗的动物饲养天数将减少11天，饲料消耗量将减少52.3千克。这相当于伊维菌素治疗相对于局部使用有机磷杀虫剂治疗，每头牛在治疗成本上净收益7.04美元。
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