INVESTIGATIONS OF MUCOSA OF THE SMALL INTESTINES OF YOUNG CHICKENS WITH AGE
The paper presents the results of a study of ultrastructure of mucosa of the small intestines and the formation of secretion in young chickens repair in critical periods of growth and development. Found that chicken 10-, 60- and 120-day old one micron surface of the cylindrical cell is from 100 to 150 microvilli, height 1.5-2.0 microns in diameter - 0,08-0,15 microns. The number of mitochondria in duodenal enterocytes and empty the intestines of chickens is an average of 30-40 units whose size is 0.2 - 1.0 m wide and 7.0 m long. In young birds 120-day age revealed a significantly higher number of secretory epithelial cells of the mucous membrane of the small intestine, than in 10-day-old chicks.