Comparative histomorphological study of kidneys in pigeon (Columba livia) and starling birds (sturnus valguris)

Abstract

This paper is focused application on the histomorphological and morphometrical differences of the kidneys of two species (Sturnus valguris and Columba livia ) belong to different orders varied in climate. Our study used 30 birds divided into two equal groups; first was 15 starling birds (Sturnus valguris) and the second group consisted of 15 pigeon (Columba livia). The current study showed morphological results of kidneys in both birds, where appeared differences between kidneys. In starling’s kidney was described square shape with fused left and right kidneys, either pigeon’s kidney was divided in to three lobes (cranial, middle and caudal) with elongated-like. The present study was revealed Mean measurements. The study recorded length of starling’s kidney was (4.43±0.12cm), while weight and volume were recorded (3.75±0.05g) and (2.28m±0.04cm³) respectively, while in pigeon was kidney length (5.45±0.12cm), weight of kidney was (4.85±0.02g) and volume about (2.21±0.06cm³). Microscopic results were included in two species, the renal cortex which made up the majority of the kidney, while small region of kidney called medulla. Our study was different impatience between starling’s bird and pigeon kidney about renal corpuscles, where the study showed the bowman’s space in starling bird was wide from pigeon. The study observed significant statistics analysis. Mean measurement was (10.64±0.02µm) and (8.65±0.04µm) in bowman’s space, while mean of the glomerulus capillaries and renal corpuscles of pigeon was a larger than starling’s bird (47.54±0.11µm), (26.60±0.12µm),(56.55±0.12µm) and (37.41±0.11µm) respectively. Also the present work was recorded significant statistics analysis during calculation the number of renal corpuscles in 1 mm² in starling bird kidney was more than that in the kidney of pigeon (20.25 ± 0.23µm) and (16.42 ± 0.01µm).