This book is a compilation of latest research on Lactic Acid Bacteria (LAB). The ongoing scientific research in several parts of the globe on the proteomics, genomics and genetic engineering of lactic acid bacteria is enhancing our knowledge of their physiology, pushing further the boundaries for their potential applications. This book represents a collection of the excellent scientific research activities regarding the future applications of LAB. It is organized under three sections namely, Livestock Feed, Fish & Seafood Products, and New Fields of Application. It is intended for a great spectrum of readers including researchers, students, corporate R&D and academicians interested in this subject.