Acaricidal effect of eight aqueous herbal extracts against ixodid ticks — two extracts in goats and six in sheep — was assessed. The leaves of Clerodendron inerme, and Croton bonplandianum in goats could reduce infestation to 68.5 and 64.19 per cent respectively on day 9. In sheep, the maximum reduction percentage recorded with the extract of flowers of Tagetes erecta was 30.08 on day 6 and with cloves of Allium sativum, 30.02 on day 7 whereas maximum reduction percentage with the leaves of Leucas aspera was 29.52 on day 8, Parthenium hysterophorus, 15.03 on day 5, Synadenium grantii 11.57 on day 4 and Lantana camara 3.47 on day 1 post treatment. Early re-infestation of ticks is attributable to shorter residual effect of extracts.
Goats and sheep, Herbal extracts, Tick infestation
