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Therapeutic efficacy of zeta‐cypermethrin pour‐on for the treatment of biting and sucking lice in cattle under field conditions
Author(s) -
ROTHWELL JT,
HACKET KC,
RIDLEY I,
MITCHELL L,
DONALDSON C,
LOWE LB
Publication year - 1999
Publication title -
australian veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.382
H-Index - 59
eISSN - 1751-0813
pISSN - 0005-0423
DOI - 10.1111/j.1751-0813.1999.tb11716.x
Subject(s) - deltamethrin , cypermethrin , pyrethroid , biology , zoology , veterinary medicine , toxicology , medicine , pesticide , agronomy
Objective To assess the efficacy of zeta‐cypermethrin pour‐on to control cattle lice. Design Five field trials in south‐eastern Australia. Procedure Zeta‐cypermethrin pour‐on, deltamethrin pour‐on and pour‐on vehicle were applied to groups of 10 cattle. Lice were counted before treatment and 14, 28, 42 and 56 days after treatment. Results Zeta‐cypermethrin pour‐on given at 2.5 mg/kg was equivalent to, or marginally more effective than a deltamethrin pour‐on at 0.75 mg/kg. It eliminated B bovis and H eurysternus and gave good control of L vituli and S capillatus. Zeta‐cypermethrin at 1 mg/kg gave good control of B bovis and H eurysternus but was not satisfactory against L vituli and S capillatus.Conclusion Zeta‐cypermethrin pour‐on, given at 2.5 mg/kg, is an effective treatment for cattle lice control. Zeta‐cypermethrin, and other synthetic pyrethroid pour‐ons, are the treatment of choice to control B bovis.