Exogenous Enzymes as Feed Additives in Ruminants

Prof. Abdelfattah Z.M. Salem, Professor - Researcher (Full time) at the Faculty of Veterinary Medicine and Animal Science, Autonomous University of the State of Mexico, in Mexico. Prof. Salem got his PhD from the Faculty of Veterinary, Leon University, Spain. He is a specialist in Animal Nutrition and working on using natural and synthetic feed additives such as plant tress extracts, yeast, lactic acid bacteria, exogenous enzymes to improve the nutritive values of animal feeds. He has more than 350 published papers (Scopus profile) in peer reviewed indexed journals with impact factor. He is a member of the editorial board of indexed journals of ISI-JCR and reviewer in more than 30 internationals journals and has graduated more than 20 doctoral and 40 MSc students. He is the associate editor of animal nutrition in Tropical Animal Health and Production, Journal of Equine Veterinary Science, Journal of Integrative Agriculture, and Animal Nutrition and Feed Technology and othersopen access journals. Moreover, he has edited some special issues in indexed journals such as Animal Feed Science and Technology, Agroforestry Systems, Journal of Integrative Agriculture, and Animal Nutrition and Feed Technology. Recently he registered some patents in the files of animal nutrition and published some handbook chapters in Elsevier and Springer Nature. Prof. Salem has received some recognitions from Springer and Elsevier as a distinguish researcher, as well as the recognition by Sandford University in USA as one of - Top 2% scientist worldwide during the last years.

Prof. Abubeker Hassen - is an associate professor in Ruminant Nutrition and Pasture Science at the Department of Animal Science, University of Pretoria in South Africa. Prof Hassen got his BSc Agric and MSc Agric in Animal Science from Alemaya University in Ethiopia and Sokoine University of Agriculture in Tanzania. In 2006 he got his PhD in Pasture Science from University of Pretoria, and was a postdoctoral fellow at the Department of Animal Science, University of Pretoria. He researches climate-smart livestock production with a focus on manipulation of diets using exogenous fibrolytic enzymes and identifying climate-smart forage species to develop climate innovative feeding systems suitable for mixed crop-livestock system in Africa. He has successfully mentored more than 20 master and 12 doctoral students and published more than 82 papers in local and international peer-reviewed journals. Prof Hassen is currently an associate editor of the African Journal of Range and Forage Science, a member of the topic board editors for animals and a guest editor for frontiers in Animal Science. He was a co-recipient of Étoiles de l'Europe, the French Ministry of Higher Education research and innovation award and a trophy from the Department of Animal Production and Health of the University of Oye Ekiti in Nigeria.

Dr. Uchenna Y. Anele is an associate professor of forageevaluation and ruminant nutrition at the Department of Animal Sciences, North Carolina Agricultural and Technical State University, USA. He got his PhD from the University of Bonn, Germany. His research interests include cattle, sheep and goat nutrition, forage utilization, sustainable agriculture through integrated crop/livestock farming, alternatives to antimicrobials use in ruminants, improving feed efficiency, and reducing greenhouse gas (GHG) emissions in ruminants. He has successfully mentored 3 master students and currently mentoring 6 doctoral and 2 master students in his lab. He is an associate editor for Frontiers in Animal Science (Animal Nutrition) and has served as a Guest Editor for two Special Issues for Frontiers in Animal Science.

Chapter. 1. Yeast as a source of exogenous enzymes in feeding ruminants.- Chapter. 2. Yeast culture and direct-fed microbes: Modes of action and beneficial applications in ruminants.- Chapter. 3. Effects of Exogenous Enzymes on the Nutritive value of some Fibrous Forage in Ruminants.- Chapter. 4. Exogenous fibrolytic enzymes: for the better utilization of Guinea grass and rice straw as ruminant feeds.- Chapter. 5. Role of Exogenous Enzymes in Feed Digestibility and Reducing the Emission Intensity of Enteric Methane Production in Ruminants.- Chapter. 6. Inclusion of exogenous fibrolytic enzymes in the diets of dairy cows and ewes: Effect on milk yield and milk composition.- Chapter. 7. Determining the Effect Enzyme Addition to Locally Available Forages in Mongolia Using In Vitro and In Vivo Techniques.- Chapter. 8. Fungi as a source of exogenous enzymes to feed ruminants.- Chapter. 9. Dietary inclusion of exogenous fibrolytic enzyme in southern China to enhance fibrous feed utilization by goats and cattle.