Selective control of Rhipicephalus (Boophilus) microplus in fipronil-treated cattle raised on natural pastures in Lages, State of Santa Catarina, Brazil

An examination of a selective control of Rhipicephalus (Boophilus) microplus and consequent cost reduction was carried out in two areas of native pasture in the municipality of Lages, State of Santa Catarina, Southern Brazil, from May 2007 to April 2009. Forty cattle were divided into two groups of...

Full description

Saved in:
Bibliographic Details
Published inRevista brasileira de parasitologia veterinaria Vol. 20; no. 1; pp. 13 - 16
Main Authors Paim, Fernanda, Souza, Antonio Pereira de, Bellato, Valdomiro, Sartor, Amélia Aparecida
Format Journal Article
LanguageEnglish
Portuguese
Published Brazil Colégio Brasileiro de Parasitologia Veterinária 01.01.2011
Subjects
Acaricides - therapeutic use
Animals
Antiparasitic Agents - therapeutic use
Brazil
Cattle
Cattle Diseases - prevention & control
PARASITOLOGY
Pyrazoles - therapeutic use
Rhipicephalus
Tick Control - methods
Tick Infestations - prevention & control
Tick Infestations - veterinary
VETERINARY SCIENCES
Brazil
cattle, fipronil
selective control
Rhipicephalus (Boophilus) microplus
controle seletivo
conventional control
fipronil
controle convencional
bovino
Online AccessGet full text

Cover

More Information
Summary:An examination of a selective control of Rhipicephalus (Boophilus) microplus and consequent cost reduction was carried out in two areas of native pasture in the municipality of Lages, State of Santa Catarina, Southern Brazil, from May 2007 to April 2009. Forty cattle were divided into two groups of 20 animals each (conventional and selective control groups). At 14-day intervals female ticks larger than 4.5 mm found on the right flank of cattle bodies were counted, and these results multiplied by two. Fipronil 1 mg.kg(-1) pour on was then administered for tick control. In the conventional group all the cattle were treated when tick count averaged more than 40 female ticks per animal while in the selective group only animals parasitized by more than 40 ticks were treated with acaricide. Every 28 days the cattle's weight was checked for cost-effective analysis. The conventional group required an additional 20 doses of fipronil compared with the selective one. There was no statistically significant differences regarding weight gain in both groups.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1984-2961
1984-2961
DOI:10.1590/S1984-29612011000100003