Efficiency of use of feed additives from local resources in cattle feed

Abstract

Abstract The problem of inadequate feeding in livestock production and associated significant economic losses has increased interest in the use of local natural feed resources in the diets of farm animals. In the last decade, domestic and international practice has proved that the use of biologically active substances in animal and poultry feed allows to get more products while reducing feed costs. It has been established that diets that are balanced for amino acid composition, vitamins and minerals increase the productive indicators of cattle by up to 30%. We thus conducted research on the use of the following natural adaptogens in farm animal feed as sources of trace elements and vitamins: Patrinia scabeosolistnaya, pine nut husk flour, brown seaweed from the Okhotsk sea, and dioecious nettle. Positive changes were noted in the experimental group. During the experimental period a larger gross milk yield was obtained, and the content of the mass fraction of fat in milk was also higher in the experimental group. Due to higher productivity in the experimental group of animals, there was a decrease in feed costs per unit of production.