Anthelmintic efficacy of oxibendazole against gastrointestinal nematodes in swine
2022
Mendonça,Rafael Paranhos de | Carneiro,Daniela Oliveira | Baccin,Eliane Marucci | Pirágine,Márcia Richena | Zoca,Sara Menegatti | Rossa,Luis Augusto Ferreira | Lima,Guilherme Cecílio | Oliveira,Francismar Barbosa de | Costa,Istanlei Soares | Oliveira,Gabriel Nunes de | Nogueira,Sabrina Nathália Louzada | Santos-Doni,Thaís Rabelo dos
Abstract In swine production, parasites, especially gastrointestinal helminths, generate considerable economic losses. Therefore, effective control measures, such as the use of the correct anthelmintics, are of paramount importance for maintaining profitability. The aim of the present study was to evaluate the efficacy of the anthelmintic oxibendazole, administered orally, in pigs (non-industrial) naturally infected with gastrointestinal nematodes. To that end, we selected 18 pigs naturally parasitized by gastrointestinal nematodes, as determined by examination of fecal samples (eggs per gram (EPG > 500) of feces), and divided them into two groups: treated (with a 10-day course of oxibendazole) and control (untreated). After the treatment period, the animals were euthanized. During necropsy, the helminths in the gastrointestinal tract were identified and quantified. The species identified were, in order of occurrence, Ascaris suum, Trichuris suis, Oesophagostomum dentatum, and Hyostrongylus rubidus. In Brazilian swine herds, traditional (non-industrial) production systems can favor the transmission of helminths. We found that treatment with oxibendazole was 100% effective against A. suum and H. rubidus, whereas it was 99.65% effective against O. dentatum and 99.20% effective against T. suis, significantly reducing helminth counts (P < 0.01 for all). We conclude that oxibendazole is effective in controlling the main helminths in swine.
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