Perry B D, Garner N, Jenkins S R, McCloskey K, Johnston D H
Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg 24062.
J Wildl Dis. 1989 Apr;25(2):206-17. doi: 10.7589/0090-3558-25.2.206.
This study evaluates a technique for delivering an oral rabies vaccine to wild raccoon (Procyon lotor) populations. Various baits and attractants were first tested on caged raccoons and baiting trials were then conducted in two distinct physiographic regions of Virginia (USA), the coastal plain and the Piedmont plateau. Raccoon population density studies preceded the field trials. Each polyurethane sponge bait distributed contained approximately 200 mg tetracycline as a tissue biomarker, and was presented in an outer bag with a fish-based attractant. Baits were frozen until used and distributed from an aeroplane throughout two 4-km2 sites in each region. One site received 450 baits/km2 and the other 120 baits/km2. Postbaiting evaluation included the direct observation of baits in the field and the examination of teeth and bone from trapped and hunted animals for evidence of the biomarker. Between 30% and 73% of the captured animals showed evidence of bait consumption. The proportion of animals with evidence of bait uptake changed when areas adjacent to the actual baiting site were included. The percentage of animals taking baits was not related to the density of baits that were distributed.
本研究评估了一种向野生浣熊（北美浣熊）种群投喂口服狂犬病疫苗的技术。首先在关在笼子里的浣熊身上测试了各种诱饵和引诱剂，然后在美国弗吉尼亚州两个不同的自然地理区域——沿海平原和皮埃蒙特高原进行了投饵试验。在田间试验之前进行了浣熊种群密度研究。每个分发的聚氨酯海绵诱饵含有约200毫克四环素作为组织生物标志物，并装在一个带有鱼基引诱剂的外袋中。诱饵在使用前冷冻，然后从飞机上分发到每个区域的两个4平方公里的地点。一个地点每平方公里投放450个诱饵，另一个地点每平方公里投放120个诱饵。投饵后评估包括在野外直接观察诱饵，以及检查捕获和猎杀动物的牙齿和骨骼以寻找生物标志物的证据。30%至73%的捕获动物显示出食用诱饵的证据。当将实际投饵地点附近的区域包括在内时，有诱饵摄取证据的动物比例发生了变化。摄取诱饵的动物百分比与分发的诱饵密度无关。
