Emblica (E.) officinalis is extensively used in Ayurvedic and Chinese herbal medicine. Its fruit is a rich source of different bioactive molecules including alkaloids, carbohydrates, polyphenolics, amino acids, vitamins, tannic acid, ellagotannin, gallic acid, emblicanin A & B, ellagic acid and flavonoids each with different pharmacological activities. In the present study, tannins extracted from E. officinalis were used to investigate its effects on the humoral immune response and protective efficacy against Eimeria infection in chickens. Results revealed significantly higher humoral immune...