Roselina Angel

Dr. Roselina Angel is a Professor in the Department of Animal and Avian Sciences at the University of Maryland's College of Agriculture and Natural Resources. With expertise in poultry nutrition, she holds a PhD in Poultry Nutrition from Iowa State University and has been with the university since 1998, initially joining as an Assistant Professor.

• Research Focus Areas
  • Calcium and phosphorus metabolism in poultry
  • Phytase and enzyme supplementation
  • Environmental impact reduction
  • Nutritional strategies for exotic animals
  • Feed additive efficacy
  • Mineral utilization optimization

Her recent publications (2025–2023) concentrate on mechanistic modeling of mineral digestibility, circadian nutrient regulation in laying hens, and the environmental implications of poultry nutrition. These studies frequently examine interactions between dietary calcium/phosphorus ratios, phytase application, and ingredient selection across broilers and laying hens.