Equines are affected by a large number of endoparasites, these can cause gastrointestinal signs, respiratory, poor performance, slow growth and even cause sudden death. The presence of parasites can be associated with various factors related to the animal and environmental or geographical factors. The prevalence of gastrointestinal parasite infection and risk factors in horses were evaluated. Stool samples belonging to 218 horses from different regions of central Mexico were analyzed by coproparasitological concentration-flotation technique. The fecal examinations were carried out from February to August in 2017. Among the 218 samples that were examined, 103 (47.24%) were found to be positive with several gastrointestinal parasites, with Strongylus spp. being the most prevalent (23.85%) followed by Trichostrongylus spp. (21.56%) and Parascaris spp. (11.93%). Breed and place of origin were significantly associated with helminth infection. Sex was associated as a significant risk factor (p < 0.01) with the infection by Strongylus spp. on females and by Anoplocephala, on males. In central Mexico, gastrointestinal helminth infection appears to be relatively low.
Background: The environmental contamination with Toxocara canis eggs increases the risk of dissemination and transmission of the parasite in dogs and paratenic hosts such as humans. We aimed to evaluate different disinfectants to compare their effect on T. canis eggs. Methods: For its realization, 850 embryonated eggs were obtained, which were suspended in a solution of 5% formaldehyde and distilled water in Eppendorf tubes. In the tubes containing the 850 embryonated eggs, researchers was added 0.5 mL of each solution (enzymatic solution, sodium hypochlorite, iodopovidone, quaternary of ammonium, benzalkonium chloride, and super oxidation solution). After mixing, an aliquot was taken, observed under the microscope, and the number of broken eggs counted at different times to find the most effective ovicidal moment. Results: The enzymatic disinfectant present a significant difference (P = 0.05) with 276.06 broken eggs followed by ammonium with 105.20 broken eggs. After 10 min, the ammonium solution was the one that showed a significant difference of 50.50 hatched eggs, followed by the enzymatic 26.80 and hypochlorite 25.00 treatments. After 20 min, the enzymatic solution treatment showed a significant difference with the other solutions showing an increase of 98.80 broken eggs. In the 30 and 40-min times, only the enzymatic treatment showed a significant difference of 334.10 and 381.70 of broken eggs respectively. Conclusion: The enzymatic solution has the greatest ovicidal effect against the eggs of T. canis to present a greater number of broken eggs in a given time between 20 and 40 minutes.
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