Use of phytobioticts in farm animal feeding

Realization of genetic potential of animal productivity in modern commercial livestock breeding necessitates the use of various biologically active dietary additives to ensure animal performance and homeostasis (R.R. Akhmedkhanova et al., 2010). The first such additives were feed antibiotics used since 1950s all over the world (R.I. Castillo-Lopez et al., 2017). However, it turned out that the excessive and uncontrolled use of antibiotics adversely affects the body of animals and birds. Microorganisms, when mutating, acquire resistance to antibiotics, thereby reducing the positive effect of the drugs. In addition, their cumulative and toxic effects occur. Over time, this led to a ban on the use of all types of feed antibiotics in the European Union (S.M. Alieva et al., 2017). After revealing the negative effects of feed antibiotics, a new tendency emerged in the world. That was a trend towards complete or partial replacement of these drugs with probiotics, the living microorganisms which are symbionts of the normal gut microflora...