The efficacy of multiple subcutaneous injections (200 micrograms/kg) of ivermectin in the control of naturally occurring tick infestations on traditionally managed Tonga-IIa (Sanga type) calves and yearlings was assessed in two field trials. In the first trial Boophilus decoloratus infestations were decreased following treatments at monthly intervals. In the second trial, with weekly and two weekly treatment intervals, infestations of Rhipicephalus appendiculatus were controlled less effectively than infestations of Amblyomma variegatum or Hyalomma truncatum. However, no engorging females of any of the tick species were found on treated animals. In treated cattle, significantly greater liveweight gain occurred than can be attributed to the control of tick infestations alone.
- British Veterinary Association. All rights reserved.
Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.