The present invention relates generally to herbal calf starter compositions for feeding animals, particularly young animals, and methods of making them, and more particularly relates to shelf-stable and cheaper herbal calf starter compositions for overall development of calves to early complete functional maturity and also prevents any infection by acting as immunobooster. The herbal calf starter compositions comprise effective amount of a mixture of herbal extract and/or at least one bioactive fraction from medicinal herbs and one or more additives selected from Energy Source, Protein Source, Carbohydrate source, Chelated/organic Mineral Mixture, Vitamins, Salt, Toxin destroyer and Biocide. The invention also relates to processes for the preparation of such extracts and herbal calf starter compositions.