Herd R P
Department of Veterinary Pathobiology, College of Veterinary Medicine, Ohio State University, Columbus 43210.
Vet Parasitol. 1988 Feb;27(1-2):111-23. doi: 10.1016/0304-4017(88)90067-2.
There are currently four major options for control of ostertagiasis and other ruminant gastrointestinal parasites. These are the traditional, suppressive, integrated and strategic approaches. Strategic dosing is the most realistic and beneficial approach for most regions of the world, including the U.S.A. It is effective, practical, labor-saving and can yield big economic returns. Today this approach is even more appropriate because of important advances in the technology of controlled release and pulse-release devices. Top priority in worm control programs should be given to dairy replacement heifers in their first year at pasture and to beef calves in the immediate post-weaning period. This is preferable to recommendations for blanket treatment of all beef and dairy cattle, regardless of age, immune status or pasture infectivity. An anthelmintic overkill is both wasteful and potentially harmful in that it increases the selection pressure for drug resistance. It is suggested that better dissemination of information is needed to make producers aware of the benefits of strategic dosing programs. This would eliminate much of the confusion about parasite control and focus attention on simple and effective programs that could significantly reduce current losses to the livestock industries.
目前，控制奥斯特他虫病和其他反刍动物胃肠道寄生虫主要有四种方法。它们分别是传统方法、抑制性方法、综合方法和策略性方法。对于世界上大多数地区，包括美国来说，策略性给药是最现实且有益的方法。它有效、实用、省力且能产生巨大的经济效益。由于控释和脉冲释放装置技术取得了重要进展，如今这种方法更为适用。在蠕虫控制计划中，首要重点应放在处于第一年牧场饲养期的奶牛后备小母牛以及刚断奶后的肉牛犊上。这比不分年龄、免疫状态或牧场感染性对所有肉牛和奶牛进行全面治疗的建议更为可取。过度使用驱虫药既浪费又可能有害，因为这会增加耐药性的选择压力。建议更好地传播信息，以使生产者了解策略性给药计划的益处。这将消除寄生虫控制方面的许多困惑，并将注意力集中在简单有效的计划上，这些计划可显著减少当前畜牧业的损失。
