Morphological characteristics of skin thickness in postnatal ontogenesis of karabayir horses

The characteristics of changes in the morphometric dimensions of the skin of horses belonging to the “Karabayir” breed at various physiological stages of postnatal ontogenesis were studied. It was found that the thickness of the skin of various anatomical points of the horse’s body increases rapidly in the 2-3 age stages of postnatal ontogenesis, and in old horses, this indicator decreases, the thickness of the skin of the legs increases in the distal direction in connection with the morphofunctional properties, and the skin elasticity decreases. In connection with the effect of mechanical friction on the skin, it is noted that it is thin in the inner part of the thigh, and the thickest in the soft heel of the hoof, as well as somewhat thick in the lower part of the body of horses, and the thinnest in the ventral part of the head, neck, withers and abdomen. Also, it was found that the dermis of the skin in young horses, the subcutaneous layer (subcutis) thickens in middle-aged horses, and the dermis and subcutaneous layer thins and the skin elasticity decreases in old horses.