Efficacy and persistence of cypermethrin 4.5% + DDVP 50% (Ectofarma®) in the control of Boophilus microplus and larvae of Dermatobia hominis on naturally infested crossbred dairy cattle

Authors

  • Nobuko Kasai Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Anima, São Paulo, SP
  • Solange Maria Gennari Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Anima, São Paulo, SP
  • Sandra Mayumi Nishi Bolsista de Aperfeiçoamento CNPq
  • João Pamphilo Di Giacomo Laboratório Agrofarma Ltda

DOI:

https://doi.org/10.11606/issn.2318-3659.v34i1p44-47

Keywords:

Boophilus microplus, Dermatobia hominis, Ectoparasiticides, Bovine, Cypermethrin, Dichlorvos, Larvae

Abstract

The effectiveness and persistence of Ectofarma* in the control of B. microplus and D. hominis larvae were evaluated. Initially, the effect on estimated reproduction and percentage of reduction was determined by dipping female ticks in 1:400 diluted solution of the product. The percentage of reduction was 95.34, and the reduction on hatchability of larvae was 100%. Then, in a field trial the product, in the same dilution, was handsprayed over a group of nine bovines. The number of ticks on treated and untreated animals were counted on days 0 ,1 ,2 ,3 ,7 ,1 4 ,2 1 , 28, 35 and 42 after treatment. D. hominis larvae were counted on day 3 and further, weekly, until the sixth week. The efficacy in vitro of Ectofarma" on the hatchability of B. microplus eggs was 100%. In the field trial this product was highly effective against ticks during 3 weeks, and ticks mean number on the treated group was lower than on control one, until the
fourth week after treatment. Reduction of D.hominis larvae reached 65% on the third day post-treatment, and mean number of larvae in treated animals was always lower than the amount found in untreated ones.

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Published

1997-02-01

Issue

Section

PREVENTIVE VETERINARY MEDICINE

How to Cite

1.
Kasai N, Gennari SM, Nishi SM, Di Giacomo JP. Efficacy and persistence of cypermethrin 4.5% + DDVP 50% (Ectofarma®) in the control of Boophilus microplus and larvae of Dermatobia hominis on naturally infested crossbred dairy cattle. Braz. J. Vet. Res. Anim. Sci. [Internet]. 1997 Feb. 1 [cited 2024 May 25];34(1):44-7. Available from: https://www.revistas.usp.br/bjvras/article/view/50237