Medicina Veterinaria
URI permanente para esta comunidadhttps://dspace.ucacue.edu.ec/handle/ucacue/52
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Examinando Medicina Veterinaria por Asesores "Cuenca Condoy, Mercy"
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Ítem Acceso Abierto Efecto biocida del extracto de raíz del barbasco (lonchocarpus utilis)en el control de piojos en cuyes(Universidad Católica de Cuenca., 2025) Calle Encalada, Juan David; Cuenca Condoy, Mercy; 0302606504The study evaluated the biocidal effect of Cubé resin (Lonchocarpus utilis) for controlling lice in guinea pigs. A total of 180 improved-genotype guinea pigs in the growth phase (400 ± 50 g) were used, distributed across six treatments: T0 (control), T1 (25%), T2 (20%), T3 (15%), T4 (10%), and T5 (5%), with three replicates of 10 guinea pigs each. Cubé resin underwent collection, cleaning, drying, crushing, pulverization, and sieving. Its quality and toxicity were assessed through a bioassay with Artemia salina, determining an LC50 of 0.50% at three hours. The biocidal efficacy was tested in two phases. In the in vitro phase, 150 lice were exposed to five concentrations (T1, 100%; T2, 80%; T3, 60%; T4, 40%; and T5, 20%), with 10 lice per concentration. In the in vivo phase, infested guinea pigs were treated with Cubé resin at 25%, 20%, 15%, 10%, and 5% at a dose of 1% of their live weight, and lice mortality was evaluated at 6, 12, and 18 hours. The in vitro results showed significant differences (p<0.05), achieving the highest mortality (100%) at the 100% concentration after 18 hours. In the in vivo phase, all concentrations reached 100% mortality at 6 hours, whereas the commercial product achieved its maximum mortality at 12 hours. It is concluded that Cubé resin at concentrations below 25% has a biocidal effect and could serve as an alternative to commercial treatments. Keywords Lonchocarpus utilis, Barbasco, Lice, Guinea pigs..
