This project was conducted in the province of Cotopaxi Parish Eloy Alfaro, in the Experimental and Production Salache Center of the Technical University of Cotopaxi, at the premises of sheep production with full United Nations of 39 animals between males and females, female animals which 9 was used. The objective was to evaluate morphologically fiber of sheep for which either we rely on to make a selection of sheep depending Phenotypic Characteristics and race Of Which Were Frisona, belly Black and Katahdin animals Each we can deduce from the United Nations earring Let us serves as reference and Accurate para Sampling that is data is done 2 times a year, can that I differentiate weighing animals according to the type of wool fiber with respective data As is the Do, longitudinal Diameter and chest, and legs Cruz. Data obtained after being evaluated respectively by means of a scale digital, whatever gave us the result of the weight A rule for OBSERVE Do LENGTH AND FINALLY stereoscope with the Chamber of Neubauer which allowed us to see the diameter in microns the diameter of the wool fiber is in intermediate average United Nations as the best wool of which is from the merino sheep has a diameter of 18 to 25 u and m result of the evaluation of the wool fiber from sheep in CEYPSA author of 18-30 U longitudinal....El presente proyecto se realizó en la provincia de Cotopaxi parroquia Eloy Alfaro, en el centro experimental y producción Salache, de la Universidad Técnica de Cotopaxi, en las instalaciones de producción ovinos con un total de 39 animales entre machos y hembras, los cuales se utilizó 9 animales hembras. El objetivo fue Evaluar morfológicamente la fibra de los ovinos para lo cual nos basamos en hacer una selección de los ovinos dependiendo las características fenotípicas y raza las cuales fueron Frisona, Black Belly y katahdin cada animal tendrá un arete que nos sirve como dato referencial y preciso para la toma de muestras que se lo realiza 2 veces al año , en lo que podemos diferenciar a los animales de acuerdo al tipo de fibra de lana con sus respectivos datos como es el de su peso, longitud y diámetro de pecho, cruz y patas.....