Ruminoreticulum bypass was observed in 9-12-month old Angora goats using video-taped fluoroscopy. For experimental purposes, ruminoreticulum bypass was stimulated by yarding animals for 19-24 h before drenching, or by yarding and oral premedication with 2% cobalt sulphate solution. When bypass occurred, 50-100% of the drench was deposited in the abomasum. Ruminoreticulum bypass had no apparent effect on the faecal egg count reduction of benzimidazole resistant Ostertagia spp. following drenching with a standard dose of 5 mg/kg of oxfendazole, although the low frequency of bypass prevented any firm conclusions from being made. The importance of ruminoreticulum bypass to the efficacy of benzimidazole anthelmintics in goats may have been overemphasised. Published by Elsevier Science B.V.
|Number of pages||4|
|Journal||Small Ruminant Research|
|Publication status||Published - Mar 2000|