Distribution of carbohydrates in the different parts of small intestine and colon of buck black goats

الملخص EN

The aim of this study was to explore the distribution of different types of carbohydrates histochemically in the wall of different parts of small intestine and colon of native buck black goats.

Eight samples of each part of small intestine (duodenum, jejunum, and ileum) and colon were used for this study.

Different histochemical methods have been used to explore types and locations of carbohydrates in the wall of studied areas.

It was observed that the amount of mucous secretion from the wall of colon was comparatively greater than that from the wall of small intestine; this is due to increase in the number of the goblet cells that lined the colon wall of black goats.

There was noticeable variation in the concentration of carbohydrate present in small intestine and colon.

Neutral glycoprotein, Carboxylated glycoproteins were found in the luminal surface of absorptive columnar cells, goblet cells and paneth cells of the intestinal glands in all parts of small intestine, while neutral glycoprotein was present in submucosal glands of the duodenal wall in black goats.

Carboxylated and sulfated glycoproteins present in the surface epithelium and goblet cells of colon, while numerous goblet cells contain little amount of neutral glycoprotein.

Glycogen, sulfated and Carboxylated glycosaminoglycans was not demonstrated in the wall of small intestine and colon, The enterocyte revealed no reaction with all histochemical methods used in the present study.