Examinando por Materia "Parasites"

Mostrando 1 - 3 de 3

Gastrointestinal parasites in free grazing goats from Ayacucho, Peru: prevalence and risk factors associated with infection in herds
(Research Square, 2024-03-28) Palomino Guerrera, Walter; Ramos Huaman, Michael; Flores Prado, Vania; Godoy Padilla, David; Zárate Rendón, Daniel A.
recording the location, sex, and age of the animals. The fecal samples were analyzed using the flotation technique in salt and sugar solution, and modified McMaster egg counting techniques for eggs/oocysts (epg/opg) of gastrointestinal parasites. The associations between location, sex, and age with the prevalence of gastrointestinal parasites were analyzed using the chi-square test. Fecal samples showed an overall parasite prevalence of 87.80%. The identified parasites were Eimeria spp. (86.22%), Strongyle type eggs (STE) (65.75%), Skrjabinema sp. (7.87%), Trichuris sp. (3.15%) and Moniezia spp. (3.15%). There was no significant association between the location and the presence of parasites (p<0.05), however, there was a higher prevalence and parasite variety in Luricocha. Sex and age did not have a significant association with parasitosis (p>0.05), except in prevalences of Trichurisspp. and Moniezia spp. (p<0.05). The epg/opg values revealed a higher parasite burden in goats from Colca compared to the other locations (p<0.05). There was also no statistical relationship between fecal egg/oocyst counts and sex or age, nevertheless, there were moderate and high parasitic burdens. The high prevalence of parasites such as nematodes and Eimeria spp. the need to implement strategic control and prevention programs in goats, where location and sex were found to be the most relevant risk factors for parasitosis in Ayacucho, Peru.
Parasitism-induced changes in microbial eukaryotes of Peruvian alpaca gastrointestinal tract
(MDPI, 2024-01-27) Sanchez, Diana; Zapata, Celso; Romero Avila, Yolanda; Flores Huarco, Nils H.; Oros, Oscar; Alvarado, Wigoberto; Quilcate Pairazamán, Carlos Enrique; Guevara Alvarado, Hada M.; Estrada Cañari, Richard; Coila, Pedro
Alpacas, important genetic resources in the Andean region of Peru, are vulnerable to diarrhea caused by pathogenic parasites such as Eimeria lamae and Giardia sp., which can be fatal, especially in neonates, due to their physiological immaturity and limited adaptability. The study investigated the diversity and abundance of intestinal fungi and protists in alpacas infected with Eimeria lamae and Giardia sp. compared to healthy alpacas. A total of 19 alpacas, aged between one and two months, were included. They were divided into two groups, one with pathological conditions (nine) and the other healthy (ten). Parasitological analyses for the detection of parasites and subsequent molecular analysis were performed on the collected fecal samples. The results revealed a greater diversity and abundance of protists in infected alpacas in comparison with healthy alpacas, while the fungal composition did not show significant changes. Therefore, parasitic infections affect the protist component of the alpaca gut microbiota. Also, it was observed that Blastocystis was identified in all healthy alpacas, serving as a possible marker of the health of the intestinal microbiota; in addition, Prussia and Pichia are beneficial fungi that help control diseases. This groundbreaking study in neonatal alpacas is the first to explore potential changes in the intestinal microbiota during an infectious state, underscoring the importance of further research to comprehend its effects on alpaca health and immune responses.
Primer reporte de resistencia antiparasitaria a ivermectina en cuyes de Cajamarca, Perú
(Universidad Nacional Mayor de San Marcos, 2023-04-28) Rojas Moncada, Juan; Becerra Terrones, Mercy; Torrel Pajares, Severino; Florián Alcántara, Amarante Nicolas; Vargas Rocha, Luis; Estela Manrique, Judith Raquel
El presente estudio tuvo como objetivo determinar la eficacia de tres principios activos de uso frecuente en el tratamiento de nematodos en cuyes de la Estación Experimental Baños del Inca del Instituto Nacional de Innovación Agropecuaria (INIA), Cajamarca. Se utilizaron 40 cuyes machos de la línea Inka de entre 2 a 3 meses de edad, positivos a Trichuris spp y Paraspidodera uncinata, infectados naturalmente, y criados dentro de un mismo sistema de manejo y alimentación. Los cuyes fueron distribuidos homogéneamente según el número de huevos por gramo de heces en 20 positivos a Paraspidodera uncinata y 20 a Trichuris spp, distribuidos en cuatro grupos de cinco cada uno. Los tratamientos fueron T0: grupo control, no dosificado; T1: fenbendazol 20 mg/kg, PO; T2: oxfendazol 20 mg/kg, PO; y T3: ivermectina 0.5 mg/kg, SQ. La evaluación se realizó mediante necropsia al día 10 de la dosificación mediante el Test de Ensayo Controlado. Se determinó una eficacia de 100% para fenbendazol y oxfendazol frente a Trichuris spp y P. uncinata, en tanto que ivermectina fue 91% eficaz frente a P. uncinata y 68% contra Trichuris spp. Se concluye que, en cuyes del INIA-Cajamarca, P. uncinata y Trichuris spp fueron susceptibles a fenbendazol y oxfendazol, y resistentes a ivermectina.