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 in Indonesia 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. Both in Australia. 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 twice Visiting Professor to the Department of Poultry Science, Texas A&M University, College Station, USA (September – December 2010 & 2017). 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€: Centara Hotel, 23-25 February 2015, Khon Kaen-Thailand); 5th International Conference on Sustainable Animal Agriculture for Developing Countries (“Invited Speakerâ€: 27-30 October 2015, Pattaya,Thailand); The 37th Malaysian Society of Animal Production (MSAP) Annual Conference (“Plenary Speakerâ€: Hatten Hotel, ,1-3 June 2016, Mallaca, Malaysia); The 1st International Conference on Tropical Animal Science and Production (“Invited Speakerâ€: Ambassador Hotel, July 26-29, 2016, Bangkok, Thailand); 25th World Poultry Congress (“Invited Speakerâ€: China National Convention Center, 05 – 09 September, 2016, Beijing, China); The 3rd Animal Production International Seminar & The 3rd ASEAN Regional Conference on Animal Production 3rd APIS & 3rd ARCAP (“Keynote Speakerâ€: Royal Orchids Garden Hotel, 19-21 October 2016, Batu Malang, Indonesia); 2nd International Conference on Plant Science & Physiology (“Keynote Speakerâ€: Avani Atrium Hotel Bangkok, 26-27 June 2017, Bangkok, Thailand); 8th International Conference on Animal Health and Veterinary Medicine (“Keynote Speakerâ€: Park Inn by Radisson, October 20-21, 2017, Toronto, Canada); 6th World Waterfowl Conference (“Oral Presenterâ€: October 22 – 25, 2017, Howard Civil Service International House, Taipei, Taiwan); 3rd International Conference on Veterinary & Livestock (“Keynote Speakerâ€: Avani Atrium Hotel, November 02-03, 2017, Bangkok, Thailand); 9th Global Veterinary Summit (“Keynote Speakerâ€: Hampton Inn Tropicana, November 16-17, 2017, Las Vegas, Nevada, USA); International Meeting on Veterinary and Animal Science (“Keynote Speakerâ€: Dubai, UAE, August 6 – 7 2018); 16th World Congress on Advances in Nutrition, Food Science & Technology (“Speaker Facultyâ€: September 10-11, 2018, Zurich, Switzerland); Euro-Global Conference on Food Chemistry, Agronomy and Technology (FAT) (“Keynote Speakerâ€: September 20-22 2018, Rome, Italy); 14th Annual Conference on Crop Science and Agriculture (“Keynote Speakerâ€: November 29-30, 2018 Bali, Indonesia); and International Conference and Expo on Animal Science & Veterinary Medicine (“Keynote Speakerâ€: February 25-26, 2019, Durban, South Africa).