Avaliação da eficácia anti-helmíntica do produto vermkill plus® suspensão sobre helmintos gastrintestinais de cães naturalmente infectados

Abstract

Among the diseases that most affect animals, the gastrointestinal helminths deserve special mention, since besides causing serious problems in dogs, they have worldwide distribution and zoonotic potentiality. In this sense, the search for effective and easily administered anthelmintics becomes increasingly important. Thus, the objective of this work was to evaluate the anthelmintic efficacy of Vermkill Plus® suspension against gastrointestinal helminths of naturally infected dogs. For the experiment were used dogs naturally infected with helminths, from the municipal kennel of Cruz das Almas-Bahia. The animals were kept in individual pens and for three consecutive days, co-parasitological examinations of each animal were performed to identify infected dogs and to form groups. Stool samples were analyzed in the Parasitology laboratory of the Veterinary Hospital of the Federal University of Recôncavo da Bahia, using Willis-Mollay, Hoffmann, Faust and McMaster techniques. After these analyzes, the animals containing the helminth egg count ≥ 300 were divided into two groups of eight animals each. One group was treated with the anthelmintic suspension and the other group received the liquid placebo, both in a single dose, the volume calculated according to the weight of the animals. Dogs remained in individual pens throughout the experiment and the feces of each animal were evaluated at days +1, +4, +7, +14, +21 and +28 after treatment. As results it was observed that the dogs that participated in the experiment were infected with four helminths, being the most prevalent Ancylostoma sp. (60%), Trichuris vulpis (24%), Toxocara canis (8%) and Strongyloides stercoralis (4%). Regarding the effect of the treatment, it can be verified that the anthelmintic product caused a significant reduction in the helminth egg count from the seventh day after the treatment and was able to maintain significantly lower levels until the 28th day, when compared to the control. Thus, it can be concluded that the oral pyrantel, praziquantel and febendazole pamoate-based product as a palatable suspension was effective in controlling the intestinal anthelmintics of dogs.