B. Chick et al., THE EFFICACY OF INJECTABLE AND POUR-ON FORMULATIONS OF MOXIDECTIN AGAINST LICE ON CATTLE, Australian Veterinary Journal, 70(6), 1993, pp. 212-213
The efficacy of one administration of moxidectin against natural infes
tations of the 3 common species of cattle lice in Australia: Linognath
us vituli, Damalinia bovis and Haematopinus eurysternus, was determine
d. A high degree of control of L vituli (the long-nosed suckling louse
) was achieved with both the cattle injection (96.7% and 1 00%) at 0.2
mg/kg and the cattle pour-on formulation (94.6% and 100%) at 0.5 mg/k
g on the 2 farms where this louse occurred. An Injection of moxidectin
at 0.2 mg/kg did not eliminate D bovis. In these trials efficacy rang
ed from nil to 85.2%. In contrast the pour-on formulation at 0.5 mg/kg
provided consistently high efficacy (83.6 to 1 00%) against D bovis o
n 3 farms. Infestations of H eurysternus (the short-nosed sucking lous
e) were low and no significant difference was recorded treatment group
s in a single trial, however, lice persisted on 3 to 7 cattle in the u
ntreated group at each inspection, whereas none were found on any anim
als in the 2 groups treated with moxidectin after treatment.