Patterns of development of connective tissue of cattle small intestine during perinatalny and early postnatalny ontogenesis

Histogenesis of the connective tissue of the small intestine on the fetal and newborn stages of development takes place in three stages: the first is a prespecific (embryos up to 34 days), the second is a generation of tissue or temporary areolar fetal tissue (from 34 days to 7-7,5 months age of the fetus), the third is the definitive development (7-7.5 months. fetal age up to 15 days. old calves). Histogenesis subject proximal-distal, mesenteric-distal gradients and asynchronous and heterochronic development of its cellular differons depending on their location in the intestinal wall.