HISTOLOGICAL AND ULTRASTRUCTURAL STUDY OF THE KIDNEY IN ONE – HUMPED CAMEL (Camelus dromedarius)

The current study was carried in the college of Veterinary Medicine-University of Basrah for observing the histological and ultrastructural of the kidney in one-humped camel. In this study 10 adult healthy kidneys of one-humped camel bought from slaughterhouse of Al-Samawah city, (2-3) years in summer (2020). The histological study include 5 kidneys investigated by using histological methods, the samples were fixed with 10% formaldehyde solution, three stains were used H&E, PAS and Mallory. Five kidneys were used for ultrastructural study, samples were then processed for ultrastructural technique. The histological examination show that high number of long loops of Henle and vasa recta in the kidney and the density percentage of renal corpuscles more in the midcortical region than in a juxtamedullary region and the diameter of renal corpuscle was nearly similar in midcortical and in juxtamedullary region. The nephron was investigated by transmission electron microscopy is unique in having thick basal lamina, the thickest being found in part of the parietal layer of Bowman, s capsule and the thin loop of Henle. The characteristics above showed that the one – humped camel ͗s kidney possessed a high reabsorption and hence promoting the production of high concentrated urine.