CAST papers are developed by interdisciplinary task forces composed of volunteer authors, chairs, reviewers, liaisons, and translators from academia, industry, and government. This index recognizes those contributors and highlights the breadth of expertise that supports CAST’s work.

Shengfa F. Liao

Affiliation
Mississippi State University
Title/Position
Associate Professor
Expertise
Swine Nutrition; Swine Production; Animal Nutrition
Bio

Dr. Shengfa F. Liao is an Associate Professor in the Department of Animal and Dairy Sciences at Mississippi State University.  He earned his Ph.D. in Animal Science from the University of Alberta, along with an M.S. in Parasitology from Nanjing Agricultural University and a B.S. in Veterinary Medicine from Anhui Agricultural University.  His research and extension work focuses on swine nutrition and swine production, with broader interests in animal nutrition, and he teaches in swine science and production.  He is a member of professional organizations including the American Society for Nutrition, the American Society of Animal Science, and Gamma Sigma Delta. 

Publications as Task Force Chair
CAST_Protein-in-the-Diet
Protein quality, not just quantity, is critical for meeting human dietary needs. This paper reviews animal‑, plant‑, and emerging protein sources in terms of amino acid composition, digestibility, nutritional adequacy, and environmental impact. It highlights life‑stage–specific protein requirements, limitations of single‑source proteins, and the role of complementary proteins in balanced diets. Global patterns of protein availability, future demand, and sustainability challenges are examined. The paper concludes that diverse dietary protein sources, rather than exclusive reliance on plant or animal proteins, are essential for supporting human health and resilient food systems.