[ZINK IS ACTIVATOR OF ENTERAL CALCIUM METABOLISM].

Experiments on goats and rabbits showed that zinc supplement to the diet leads to calcium concentration rise in muscle, bone and blood of animals. However, this rise was not adequate to increase in.zinc consumption. The bulk of alimentary zinc stayed in soluble fraction, dense endogen fraction and infusoria fraction of digesta and stimulated calcium release from food particles, it's accumulation in digesta fractions and calcium utilization on the whole. Authors estimate animal digesta as homeostatic, spatial organized, endogenic formation in which zinc and calcium are functionally dependent through enteral mucosa.

[Experimental substantiation of the functional relationship of mineral elements of nutrition with intestinal mucus and the mucosa membrane of the intestine].

Interaction of magnesium increased dietary level with enteral calcium metabolism through the gut wall and intestinal mucosa mechanism is described in ruminants. Magnesium excess was found in the endogenous fraction of chyme and in the intestinal mucosa and resulted in increased calcium concentration in these biological tissues. Magnesium itself did not penetrate into the internal gut environment, and calcium content in the organs and tissues was reduced. It is concluded that the interaction of minerals takes place in the gut prior to absorption, and that the intestinal mucosa is important for homeostatic balance of minerals in the digesta and in the internal body environment.

[General biological phenomenon of cation deposit by chyme structures and its implications for creation of enteral nutrition mixtures].

General regularity of mineral elements distribution in enteral digesta of animals with different types of digestion is described. It was established that Mn, Zn, Cu and Ca are commonly concentrated in mucosal structures of digesta. Their concentrations dramatically increase while moving digesta from small intestine to large gut. Potassium and sodium are not so intensively conjugated with enteral mucosa. It is speculated that described phenomenon can be estimated as a general biological law and can be applied for enteral nutritional mixture composition improvement.

[Experimental study of the structuring role and other chyme characteristics in some functionality gastrointestinal truct at enteral nutrition].

The structure of hymus of gastrointestinal tract and mechanisms of its formation were studied on representatives of three classes of vertebrates (fishes, birds, mammal). Established that enteral hymus is in homeostasis and spatially structured in all animals. On weight hymus consists about 80-95% of hydrated cavitary mucus and 5-20% of food particles. [Russian characters: see text] plays a key role in formation of hymus structure and it is the basic endogenous formation for cavitary hydrolysis and providing the directed movement of nutrients to apical surfaces of enterocytes.