**About the Editors**

#### **Natalie Morgan**

Dr. Natalie Morgan is a Senior Lecturer in Animal Science at Curtin University, Perth, Western Australia. Her primary interest areas are poultry nutrition, mainly feed enzymes and carbohydrate chemistry. Her current research focuses on dietary fiber and non-starch polysaccharides (NSPs), improving the efficacy of NSP-degrading enzymes, and the effects of xylo-oligomers as prebiotics in broiler chicken and laying hen diets. Dr Morgan completed a PhD and post-doctoral research fellow position in poultry nutrition at Nottingham Trent University, UK, and focused on the efficacy of phytase in meat chicken diets. She moved to the University of New England, Australia, 2015, where she was a Lecturer in Animal Science and a Post-Doctoral Research Fellow in Poultry Nutrition before moving to Curtin University, Australia, in 2022. She has published over 70 peer-reviewed journal articles and is an Associate Editor for three high-impact animal nutrition and poultry science journals. She is regularly invited to present at domestic conferences in Australia and international conferences in Europe, Asia, and America on the topic of NSP and prebiotics in poultry diets. She has research collaborations with multiple universities and industry bodies around the world and regularly supervises Ph.D., Master, and Honours student projects in poultry nutrition.

#### **Youssef A. Attia**

Professor Dr. Youssef A. Attia is a professor of Poultry Nutrition at King Abdulaziz University, Jeddah, Saudi Arabia. He gained a Doctor of Philosophy in Poultry Production at the University of Zagazig, Egypt, as well as the University of Georgia, USA. His titles have included Department Head, Vice Dean, and Dean in Charge. Professor Attia has published 330 articles (including 16 books and book chapters) and has translated books and student books. Dr. Attia is a reviewer and editorial board member and has gained a lot of awards.
