Identificación de parásitos gastrointestinales en venados de cola blanca (Odocoileus virginianus) por diferentes métodos coprológicos en el Zoocriadero La Casa del Venado -Cayambe

Abstract

The objective of this research was to identify gastrointestinal parasites in white-tailed deer (Odocoileus virginianus) by different coprological methods. Thirty-eight deer samples were processed, 16 of the samples belonged to the adult category, 16 to the juvenile category and 6 to the calf category. The samples were evaluated by two coprological flotation methods: Sheather flotation based on a sucrose solution at a density of 1.20 and Faust flotation based on a solution with Zinc sulfate at a density of 1.18. The data obtained were compiled in Excel to make frequency tables and determine if there are differences between the 2 coprological methods for the observation of parasites. The parasites that occurred most frequently were the nematodes Strongyloides spp, Capillaria spp, Trichostrongylus spp, Ostertagia spp, Oesophagostomum spp and the protozoan Eimeria spp. Strongyloides spp. was the parasite that presented the highest percentage in the 3 categories of adults (79% in Sheather and 83% in Faust), hatchlings (72% in Sheather and 83% in Faust), and juveniles (92% in Sheather and 94% in Faust). Nine student t-tests were performed for Strongyloides spp, Trichostrongylus spp and Eimeria spp parasites, which showed that there are differences in the methods, with this and the counting of eggs in the McMaster chamber, it was evidenced that the most effective method is the Faust method due to its capacity to provide samples with less sediment and preserve each parasite structure. All parasites found were classified by groups and described morphologically