Proceedings : May 29 - 30, 1998 in Rostock (Germany) ; the symposium was performed on the occasion of the 100th birth anniversary of Prof. Dr. habil. Dr. h.c. mult. [...] / International Symposium Energetic Feed Evaluation and Regulation of the Nutrient and Energy Metabolism in Farm Animals / [Organizers: the Institute of Science for Ecologically Compatible Husbandry, Agricultural Faculty, University of Rostock, Germany ... Ed.: P. Junghans ...]. Dummerstorf, 1998