The aim of this study was to determine the effectiveness of three anthelminthic principles commonly used in horses in the Valle de Aburrá, Antioquia (Colombia), using the faecal egg count reduction test (FECTR). A cross-sectional study was carried out in 143 horses with initial counts of >100 eggs per gram of faeces (EPG). Three anthelminthic principles (fenbendazole [FEN], ivermectin [IVM], and pyrantel pamoate [PYR]) were evaluated. It was found that most of those in charge of the animals did not remember the product used in the last deworming (27.9%; 40/143); that the use of IVM (25.2%; 36/143) and FEN (23.1%; 33/143) was common in the study population; and, that the IVM is the active principle with the greatest effectiveness in the study population (82.7%), followed by the PYR (65.8%). None of the evaluated active principles showed to be effective against parasites that produce S...

El presente estudio tuvo como objetivo determinar la efectividad de tres principios antihelmínticos comúnmente usados en equinos del Valle de Aburrá, departamento de Antioquia (Colombia), mediante la prueba de reducción de recuento de huevos fecales (FECTR). Se realizó un estudio transversal en 143 caballos con recuentos iniciales de >100 huevos por gramo de heces (HPG). Se evaluaron tres principios antihelmínticos (fenbendazol [FEN], ivermectina [IVM] y pamoato de pirantel [PYR]). Se encontró que la mayoría de los encargados de los animales no recordaban el producto utilizado en la última desparasitación (27.9%; 40/143); que en la población de estudio era común el uso de IVM (25.2%; 36/143) y FEN (23.1%; 33/143); y, que la IVM es el principio activo con la mayor efectividad en la población de estudio (82.7%), seguido del PYR (65.8%). Ninguno de los principios activos eva...

The B-mode ultrasound technique offers the possibility of performing an ocular biometric evaluation of the horse. In Colombia there are no reports on ocular biometric measurements in horses, so the objective of this article was to report the ultrasound appearance of the normal eye and obtain biometric values that can serve as a basis for ocular evaluation. A descriptive study was conducted in the eyes of 50 working horses from the department of Córdoba. The anterior chamber (AC), lens length (Ll), lens width (Lw), vitreous chamber (VC) and axial globe length (AGL) were measured by ultrasound. The sample consisted mainly of Colombian Creole horses (60%) and Appaloosa (32%), 58% were males, average age of 6.7±4.9 years. The biometric values obtained corresponded to AC: 0.68±0.08 cm; Ll: 1.11±0.09 cm, Lw: 2.00±0.16 cm; VC: 1.80±0.15 cm, and AGL: 3.91±0.28 cm. Sex differences were obs...