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Plant based feed additives (phytogenic compounds) use in poultry diet for natural, less toxic and residual free egg and meat production compared to that of the antibiotic and inorganic chemical based feed additives.Phytogenic compound majorly involve herbal extract, oils, oleoresin from the herbs and spices commonly like oregano, garlic, pepper, fenugreek, cumin, aloe vera, cinnamon, lemon, anise, nutmeg, ginger etc.These herbal additives contain certain bioactive molecule like allicin, capsaicin, allyl thiocyanate, peperine, thymol, which impart them properties like antimicrobial, antifungal, antiviral, anti-oxygenic and potent antiparasitic that overall provide better growth microenvironment within body of bird.Numerous studies have demonstrated the benefits of using phytogenic compounds in poultry diets, including enhanced digestion, increased growth performance, decreased disease prevalence, greater reproductive efficiency, reduced morbidity and greenhouse gas emission.Therefore to improve the overall performance of poultry and safeguard the human health these herbal additives are safe alternatives to chemical additives with no side effects, no residual effect, cost effective and eco-friendly.
Bharti et al. (Tue,) studied this question.