MORPHOLOGICAL FEATURES OF SMALL INTESTINE OF TURKEYS UNDER DIFFERENT HOUSING CONDITIONS

The aim of the study is to investigate the structural features of the small intestine of 105-day-old female turkeys of the Hybrid Converter Novo cross kept in industrial production and 105-day-old female turkeys of the Hybrid Converter cross kept in private farms. This work was carried out at the Department of Anatomy and Physiology of the Northern Trans-Urals State Agrarian University. Anatomical dissection, morphometric and histological techniques were used. Histological preparations were stained with hematoxylin and eosin, according to Masson, according to Van Gieson using generally accepted methods. Histological blocks were cut on a Rotmik-2M rotary microtome with a thickness of 5 μm. Based on the morphological study of turkeys in industrial conditions, the relative weight of the small intestine to body weight is 1.59 ± 0.23 %; the relative length of the small intestine to body length is 418.45 ± 2.87 %; the ratio of the muscular membrane to the mucous membrane was: duodenum – 1 : 0.92, jejunum – 1 : 0.81, ileum 1 : 0.94. The area of the duodenal glands is 957.76 ± 38.00 μm2, the general intestinal glands of the jejunum – 1252.97 ± 33.36 and the ileum – 1875.25 ± 53.82 μm2; in turkeys in private farming conditions: the relative weight of the small intestine to body weight is 2.86 ± 0.49 %; The relative length of the small intestine to the body length is 316.00 ± 10.287 %; the ratio of the muscular membrane to the mucous membrane was: duodenum – 1:1.33, jejunum – 1 : 0.61, ileum – 1 : 0.74. The area of the duodenal glands is 1099.79 ± 34.80 μm2, the total intestinal glands of the jejunum are 309.52 ± 28.26 μm2 and the ileum is 250.20 ± 17.50 μm2.