Yusuf Leonard Henuk is a Professor in the Department of Animal Science, Faculty of Agriculture at University of Sumatera Utara (USU), Medan, North Sumatera, Indonesia. He received a Bachelor’s degree (S1: ‘Sarjana’) from the Faculty of Animal Science, the University of Nusa Cendana from 1980-1984. He obtained Master in Rural Science (M.Rur.Sc.) from the University of New England from 1991 – 1995 and continued Doctor of Philosophy (Ph.D) from the University of Queensland from 1998 – 2001.He participated in the courses of “Arabic Language†and mainly “Poultry Production and Health†from 15 January – 31 March 2008 organized by the Egyptian International Centre for Agriculture (EICA), Cairo, Egypt. He was a Visiting Professor to the Department of Poultry Science, Texas A&M University, USA (September – December 2010). Prof. Henuk was a prolific writer and has published many articles in international journal and mainly poultry science, e.g. World’s Poultry Science Journal as well as international scientific meetings as such as 1st International Conference on Native Chicken (“Invited Speakerâ€: Khon Kaen-Thailand, 23-25-02-2015); 5th International Conference on Sustainable Animal Agriculture for Developing Countries ((“Invited Speakerâ€: Pattaya,27-30-10-2015); The 37th Malaysian Society of Animal Production (MSAP) Annual Conference (“Plenary Speakerâ€: Hatten Hotel, Mallaca,1-3-6-2016); The 1st International Conference on Tropical Animal Science and Production (“Invited Speakerâ€: Ambassador Hotel, Bangkok, July 26-29, 2016; 25th World Poultry Congress (“Invited Speakerâ€: China National Convention Center, Beijing, 05 – 09 September, 2016); The 3rd Animal Production International Seminar & The 3rd ASEAN Regional Conference on Animal Production 3rd APIS & 3rd ARCAP (“Keynote Speakerâ€: Royal Orchids Garden Hotel, Batu Malang, Indonesia, 19-21 October 2016).