ACARICIDAL EFFICACY OF ECTOMIN® (A NEW SYNTHETIC PYRETHROID) AGAINST BOOPHILUS ANNULATUS TICKS IN CATTLE.

Authors

Department of Hygienc and Preventive Medicine, Faculty of Veterinary Medicine, Moshtohor, Zagazig University, Benha Qalyoubia, Egypt.

Abstract

Fourteen crossbred cows (Friesian x Egyptian native) were used to assess the acaricidal efficacy of Ectomin® against Boophilus annulatus ticks. Cows were allocated into treated and control groups, each consists of 7 animals. At day (0) before treatment, ticks of more than 4.5mm in length attached to both treated and control animals were counted and every week thereafter. The average tick number on treated and control animals were counted and the efficacy percentage of Ectomin® was then determined. The number of ticks that laid eggs were counted jn treated and control animals and hatching percentage of eggs were then calculated. Spraying of animals with Ectomin® showed that complete elimination of ticks occurred early on the 7th day post-treatment. The average number of ticks was 1673.29 and that of controls was 1578 at day (0) before treatment. The maximum ‘efficacy (100%) was sustained for up to 7 weeks post-treatment after which the efficacy was slightly dropped and reached 98.32%. The results -of Ectomin® on oviposition and egg hatchability of the ticks survived treatment were encouraging. The percentage of ticks collected from treated cows that succeeded to lay eggs was 22%, the average number of eggs laid per tick was 259.23 and hatching% was 8.61%.
 

Main Subjects

Veterinary Medical Journal (Giza)
Volume 44, Issue 2
April 1996
Pages 403-407

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