Degree in veterinary surgery, University Wroclaw, Poland, 1953. Doctor of Philosophy in Veterinary Sciences, University College Agriculture, Wroclaw, 1961.
Teacher veterinary subjects Veterinary Lyceum, Nowy Targ, Poland, 1953—1955. Research assistant Polish Academy of Sciences, Cracow, 1955—1957. Research assistant department biochemistry Institute Animal Husbandry, 1957—1965, adjunct lecturer in environmental physiology, 1965—1974, professor veterinary science, 1974—1976.
Professor veterinary science department experimental pathology of animals Polish Academy of Sciences, Poznan, 1976—1988. Professor veterinary science department development and experimental endocrinology Institute Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, 1988—2000. Head joint isotope and endocrinology laboratory department biochemistry Institute Animal Husbandry, Cracow, 1966—1976.
Organizer, head department experimental pathology of animals Polish Academy of Sciences, Poznan, 1976—1988, head department development and experimental endocrinology, 1988—2000, initiator, chairman committee Veterinary Endocrinology of Domestic Animals, 1986—1990. Member science committee, advisory boards Institute Animal Physiology and Nutrition and Institute Animal Reproduction and Food Research, Olsztyn, 1976—2000. Consultant endocrinologist ENDO-CANIS Endocrine Research and Diagnostics, Poznan, since 2000.
Chairman science committee Pathophysiology of Adaptation and Non-Specific Resistance in Neonates, 1981—1990. Chairman international French-Polish cooperative project Meat Production Perinatal Mortality and Fertility Problems, 1982—1990. Head sponsored research International Atomic Energy Agency, Vienna, 1977—1980.
Principal investigator Influence of Energy Balance on Interaction Between Somatotropin, Thyroid Hormones and Cytokines United States-Poland Maria Sklodowska-Curie Joint Fund II, 1996—1997. Member international symposia organizing committee Slovak Academy of Sciences, 1983, 85, 90, numerous others.
Member of Polish Society Veterinary Sciences, Polish Society Endocrinology, Polish Society Physiology, International Society Neuroendocrinology, European Society Nuclear Methods in Agriculture and Veterinary Medicine, European Society Comparative Endocrinology, Society Endocrinology.
Married Maria Ewa Suska-Brzezinska, July 1, 1971. Children: Izabella Slebodzinski, Jacek Slebodzinski, Jerzy Slebodzinski.