The Effect of Vitamin Premixes on Some Physiological and Biochemical Indicators of the Body of Laying Hens

The first is the feed itself. The largest number of them are of plant origin and are divided into bulk (hay, silage, beets, straw) and concentrated feed (grain of various crops, cakes, meal). Further, we can name feed of animal origin (skim milk, fish meal, meat meal, bone meal), feed of microbiological and chemical synthesis (yeast, synthetic amino acids), mineral supplements (chalk, table salt, monocalcium phosphate, dicalcium phosphate, etc.).