Morphological features of the skin cattle

Abstract

The article discusses the comparative morphological features of the skin of cattle of the Holstein-Frisian breed of the frontal region of the head, the gluteal region of the back, the umbilical region of the abdomen, the region of the pastern of the pelvic limb during puberty of the animal. The purpose of this study was to study the topographical features of localization of structural components of the skin of cattle of the HolsteinFrisian breed. The work was performed at the Department of Morphology, Physiology and Veterinary Pathology of the Agrarian Institute of the Ogarev Moscow State University. The object of the study was the skin of Holstein-Frisian cows bred in farms of the Republic of Mordovia. The study material was the skin of the frontal region of the head, the gluteal region of the back, the umbilical region of the abdomen, the pastern region of the pelvic limb. The processing of the material was carried out in the scientific laboratory of "Histophysiology" of the department. Pieces of skin for research were fixed in 10% neutral formalin. Histological preparations were made according to the standard procedure for light microscopy. Histological preparations were stained with hematoxylin and eosin, according to Van Gieson and Mallory. Morphometric studies were carried out using the Image J program. Statistical data processing was carried out using MS Excel 2007 and Statistica 6.0 application programs. The differences were considered significant at a significance level of less than 0.05 (p<0.05). The presence of pedigree morphological features of the skin of four areas of the body was established. They are characterized by differences in the thickness of the skin and its layers, the depth of the sebaceous, sweat glands and hair roots. The matrix of the papillary and mesh layers of the dermis has topographic features of the architectonics of the fibrous component.