NDLI: In vitro and in vivo efficacies of ivermectin and cypermethrin against the cattle tick Hyalomma anatolicum anatolicum (Acari: Ixodidae)

Content Provider	Springer Nature Link
Author	Sajid, Muhammad S. Iqbal, Zafar Khan, Muhammad N. Muhammad, Ghulam
Copyright Year	2009
Abstract	This study investigated the comparative efficacy of ivermectin and cypermethrin pour-on, for the treatment of Hyalomma anatolicum (a.) anatolicum infestations in bovines. For examining acaricidal efficacy, 480 ticks were exposed in vitro to graded doses of both the acaricides and in vivo efficacy was examined in 360 tick-infested bovines treated at the recommended doses of ivermectin (IVM) and cypermethrin (CYM) pour-on. The comparative quantitative assessment of tick burden was done on days 0, 5, 10, 15, and 20 after treatment using “finger counting.” The results of the tick survival assay indicated both compounds were effective in vitro against H. a. anatolicum. The arc transformed mean surviving ticks, 24 h post immersion, was 2.66 and zero in groups treated with the highest dilutions of IVM and CYM, respectively. At 15 days post-treatment, the CYM pour-on showed a higher in vivo efficacy (no surviving ticks) compared to IVM (mean of 20 surviving ticks). A single dose of CYM and IVM was found effective for 20 and 15 days post-treatment, respectively. Additionally, a questionnaire was used to gather information from 30 small holder dairy farms on the farmer's approach toward the control of ticks. The majority (90%) of respondents were using acaricides incorrectly along with poor husbandry practices on their farms. Overuse of IVM in the tested area of Pakistan may be the reason the IVM is not as effective as expected. These results provide useful tools for the decision making in tick control, as well as providing the basis for testing the findings on provincial and national levels in future studies.
Starting Page	1133
Ending Page	1138
Page Count	6
File Format	PDF
ISSN	09320113
Journal	Parasitology Research
Volume Number	105
Issue Number	4
e-ISSN	14321955
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-06-27
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Immunology Microbiology Medical Microbiology
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Veterinary Parasitology Insect Science

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