Mineral feed supplement (calcined), Nikolaev region.

River fodder turtle of the 1st grade, single-shell with a calcium content of up to 40%, 3-5 mm fraction (cleaned, crushed), used in the diet of farm birds:
 an effective mineral additive in the fodder ration of farm birds;
 the main source of calcium for birds;
 included in feed up to 7%;
 harmless;(//tractor-service.com)
 increases the preservation of young, laying birds, increases the strength of the shell;
 reduces the need for compound feed;
 acts as a gastrolith - a substance that improves grinding, grinding and assimilation of food by the musky stomach of ornamental and domestic birds;
 excludes the possibility of stomach rejection;
 eliminates bone fragility, calcium metabolism disorders, normalizes the flow of biochemical reactions in the body without side effects;
 especially useful for birds during the period of egg-laying, moulting and rearing of young.