https://www.anbarjvs.edu.iq/wp-content/uploads/2021/06/1.pdf

The purpose of this review is to summarize the effectiveness, modes action and commercial application herbal plants their derivatives as growth promoters for animal. As described in literature, increase farming prices feed costs small ruminant general, led increases difficulties production livestock. To dissolve issue, several studies concentrated on new alternative resource, but others have tried enrich milk products meat by rising polyphenol compounds content introductions sheep goat feed. Currently, consumers demand safety quality feeding. Since antibiotics can be leave residues tissues, that could induce subsequent emergence resistant strains microorganisms capable endangering health livestock human. This scenario has given impetus explore alternatives animal nutrition. Consequently, replacement synthetic promoter’s antibiotics, natural like herbs spice additives come attention enhance physiological functions. So, use feeds containing bioactive such thymol, flavonoids, saponins, limonene, thymoquinone, essential oils which different parts, leaves, roots seeds used these responsible healthy product. Furthermore, one hot points advanced research stability product against oxidative deterioration process limits shelf life.