Dr. M. Saadullah worked as lecturer, Assistant Professor, Associate Professor, Professor and Dean, Faculty of Animal Husbandry, Bangladesh Agricultural University from 1965 to 2005. He supervised a number of M.S. and Ph.D students and also worked as Visiting Professor in the Hiroshima University in Japan and East Anglia University, Norwich, UK. He has more than 40 years of research experience in rural and livelihood development. He is a renowned researcher and policy maker in animal feed resources and technology. He has membership in Bangladesh Animal Husbandry Association, Bangladesh, Ex-Member at Editorial Committee Asian Australasian Journal of Animal Science, Ex-Member at Editorial Committee Bangladesh journal of Animal Science and life member Indian Journal of Animal Science.
Ruminant feed resources; Development of feed technologies; Small holder beef cattle production; Draught animal production and development; Rural development and poverty alleviation; Improvement of livelihoods by raising livestock and poultry of resource poor farmer.