The invention is related to methods and compositions for improving feeding and/or production characteristics in animals. In an embodiment, the invention includes a method for improving feeding characteristics of an animal including administering a first composition comprising an effective amount of saponins to the animal, and administering a second composition comprising an effective amount of a preservative to the animal. In an embodiment, the invention includes a method for improving production characteristics of an animal including administering a first composition comprising an effective amount of saponins to the animal, and administering a second composition comprising an effective amount of a preservative to the animal.