| Summary: | Deltamethrin is an insecticide of the group of type II pyrethroids widely used as the ectoparasiticide in
various veterinary topical application forms, such as bath, spray solution for application on the back and
collar. The impregnated with deltamethrin to 4% (CD4%) collar, and his statement against ticks, has also
been recommended against the bites of sandflies transmission of leishmaniasis. Some reports have been
described for ingestion and poisoning, and skin reactions with the use of CD4%, but so far there is not a
controlled study on the possibility of these events study in dogs. The objective of this study was to
investigate the occurrence of adverse reactions to CD4%. Thirty-three dogs kept in collective cages in the
kennel UNOESTE, divided into 3 groups of 11 animals each, with group A of adult females (use the collar as
indicated by the manufacturer), group B adult male (do not use the collar following the indication of
manufacturer) and group C of young females (use the collar as indicated by the manufacturer, but with an
adjustment period). The animals were observed with respect to possible adverse or allergic reactions to
completion of clinical dermatology and record daily for 15 days and then three times a week until at least 4
months time recommended staying with the leash effectiveness by the manufacturer. Of the 33 dogs,
39.4% (13) remove the collar, 9 females (3 group A and group C 6) and 4 males (group B). Of the 13 animals
33
Colloquium Agrariae, v. 12, n.1, Jan-Jun. 2016, p.32-38. DOI: 10.5747/ca.2016.v12.n1.a131
that pull the collar, 18.2% ingested the same, 4 females (group C) and 2 males (group B). No animal showed
adverse or allergic reaction to the collar, even in those who ate the same. There was no occurrence of
ectoparasites during the period of observation. We can conclude that the CD4% is safe and effective in
controlling ectoparasites and the manufacturer's recommendations are suitable for the use of the same
without the need of adjustment time. The clustering of dogs, especially younger, can increase the incidence
of withdrawal of the collar.
Keywords: deltamethrin 4%
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