Dr. Oscar Tejeda

Dr. Oscar Tejeda received his Bachelor’s in agriculture with an emphasis in animal science from Zamorano University, Honduras. After completing his Bachelor’s degree, he obtained his Master’s degree in physiology from Auburn University. His Master’s was focused on the effects of management and nutritional practices on the modulation of myogenic stem cell populations, and the implications of the changes in general muscle growth by hypertrophy and hyperplasia. He obtained a Doctor of Philosophy (Ph.D.) in nutrition from the University of Georgia that was focused on the effect of dietary fibrous components, dietary metabolites, and feed additives (i.e. enzymes, probiotics, prebiotics) on the modulation of intestinal morphology, nutrient metabolism, and gene expression of nutrient transporters.

Education

• Ph.D., Nutrition, The University of Georgia (UGA)
• M.Sc., Physiology, Auburn University
• B.Sc., Agriculture/animal science, Pan-American School of Agriculture, Zamorano

Research Interests

• Evaluation of feed additives in the growth performance
• Probiotics, enzymes, and alternatives for antibiotics
• Effect of parent stock (breeder) nutrition on the growth performance of the offspring
• Evaluation of feed alternatives (i.e. by-products) on the performance of poultry species
• Modulation of embryonic development via changes in environmental parameters

Peer-reviewed publications

• C. R. Gregg, O. J. Tejeda, L. F. Spencer, A. J. Calderon, D. V. Bourassa, J. D. Starkey, C. W. Starkey. 2022. Impacts of increasing additions of choline chloride on growth performance and carcass characteristics of broiler chickens reared to 66 days of age. J. Animals 12:1808
• C. R. Gregg, O. J. Tejeda, L. F. Spencer, A. J. Calderon, D. V. Bourassa, J. D. Starkey, C. W. Starkey. 2022. Effect of Dietary Choline Chloride Supplementation on Growth Performance and Carcass Characteristics of Broiler Chickens Reared to 32 Days of Age. Poult. 1:66-73
• A. J. Keel, A. J. Calderon, O. J. Tejeda, J. D. Starkey, and C. W. Starkey. 2022. Dietary protein source and litter condition alter broiler chicken intestinal macrophage and mitotically active cell populations. Frontiers in Vet. Sci. 9.
• O. J. Tejeda, W. K. Kim. 2021. Effects of fiber type, particle size, and inclusion level on the growth performance, digestive organ growth, intestinal morphology, intestinal viscosity, and gene expression of broilers. Poul. Sci. 100:101397
• O. J. Tejeda, W. K. Kim. 2021. Review: Role of dietary fiber in poultry nutrition. Anim. 11, 461.
• O. J. Tejeda, W. K. Kim. 2020. The effects of cellulose and soybean hulls as sources of dietary fiber on the growth performance, organ growth, gut histomorphology, and nutrient digestibility of broiler chickens. Poul. Sci. 99:6828-6836.
• O. J. Tejeda, K. J. Meloche, J. Starkey. 2020. Effect of incubator tray location on broiler chicken growth performance, carcass part yields, and the meat quality defects, Wooden Breast and White Striping. Poul. Sci. 100:654-662.
• O. J. Tejeda, A. J. Calderon, J. A. Arana, K. J. Meloche, J. D. Starkey. 2019. Broiler chicken myofiber morphometrics and myogenic stem cell population heterogeneity. Poul. Sci. 98 (9): 4123-4130.

Courses Taught

• ANSC 2002/2001 – Animal nutrition I
• ANSC 3023 – Animal nutrition II
• ANSC 4003 – Advanced animal physiology
• POSC 1003/1001 – Introduction to poultry science/lab
• ANSC 2013 – Animal anatomy and physiology
• ANSC 3113/1311 – Non-ruminant animal production/lab
• ANSC 4122/4121 – Swine production/lab
• ANSC 4132/4131 – Poultry production/lab