Diferenciación del aparato digestivo de los rumiantes: Comparación entre oveja (ovis aries), rebeco (rupicapra pyrenaica) cabra montes (capra pyrenaica) (Differentiation of ruminant digestive tract a comparison among sheep (ovis cries), chamois (rupicapra pyrenaica) and spanish ibex (capra pyrenaica))

Resumen
Se han utilizado los datos correspondientes a 11 ovejas (Ovis aries), 10 cabras monteses (Capra pyrenaica) y 24 rebecos (Rupicapra pyrenaica). El aparato digestivo, una vez separada la grasa omental y mesentérica, se fraccionó en los siguientes compartimentos: retículo-rumen, omaso, abomaso, intestino delgado, intestino grueso y ciego. El peso total del aparato digestivo vacío y de todos sus compartimentos fue mayor en las ovejas que en los rebecos, ocupando la cabra montés una situación intermedia. En relación con el aparato digestivo total, la oveja presenta una menor proporción de retículo-rumen y omaso que la cabra y el rebeco, siendo mayor el desarrollo relativo del abomaso, intestino grueso y ciego.
Abstract
A total of 11 ewes (Ovis aries), 10 spanish ibex(Capra pyrenaica) and 24 chamois (Rupicapra pyrenaica) were used. The digestive tract was se¬parated in: reticulum-rumen, omasum, abomasum, small intestine, large intestine and caecum. Total digestive tract weight and its components were higher in the sheep than the chamois, with a intermediate value for the spanish ibex. There were the same differences when the weights were expresed as proportion of empty body weight. The proportion of reticulum-rumen and omasum as proportion of total empty digestive tract was lower and the abomasum, large intestine and caecum were higher for the sheep than the other two species. The relationship among different digestive parts changed in the ruminant species studied.