Preface; Anaerobic Enzymes as a New Technology in Animal Feed; Antibiotics in Animal Nutrition; Asparagous Racemesus as Natural Feed Additive Application for Ruminants & Non-Ruminants Healthy Products; Tropical Tree Foliages & Shrubs as Feed Additives in Ruminant Rations; Utilization of Exogenous Fibrolytic Enzymes in Ruminant Feeding; Uses of Saccharomyces Cerevisiae as a Feed Additive in Horse Feeding; Utilization of Zilpaterol Hydrochloride in Finishing Lambs.