The Fourth International Conference on Pig Reproduction was held at the University of Missouri, Columbia in May 1993. The meeting provided a forum for exchange of ideas on recent developments in research in pig reproduction.

The papers in this Supplement address many aspects of pig reproduction, including: development of the follicle and the corpus luteum, oocyte development in vivo and in vitro, fertilization in vivo and in vitro, embryonic and placental development, gestation and parturition, and new technologies including somatic cloning and functional genomics. basic molecular and cellular biology, which provide new insight into pig reproductive physiology and regulation. These papers provide an authoritative source of information that will be invaluable for students, teachers, researchers, veterinarians, consultants and technologists interested in all aspects of pig reproduction.

As a continuation of the earlier volumes in this series, the proceedings of the Eighth International Conference provide authoritative and up-to-date information on pig reproduction research. This volume, which contains manuscripts accompanying the state-of-the art lectures, the parallel sessions, and the expanded abstracts, provides an authoritative and up-to-date source of information on research in pig reproduction. This text is an invaluable resource for students, teachers, veterinarians, animal scientists, consultants, and technologists with an interest in all aspects of pig reproduction.