1. Lawrence, L. (2008). Nutrient needs of performance horses. Revista Brasileira de Zootecnia, 37: 206-210.
2. Turner, K. K., Nielsen, B. D., O’Connor, C. I., & Burton, J. L. (2006). Bee pollen product supplementation to horses in training seems to improve feed intake: A pilot study. Journal of Animal Physiology and Animal Nutrition, 90(9–10): 414-420.
3. Warren, L. K., Lawrence, L. M., & Thompson, K. N. (1999). The Influence of Betaine on Untrained and Trained Horses Exercising to Fatigue. Journal of Animal Science, 77(3): 677-684.
4. Brass, E. P. (2000). Supplemental carnitine and exercise. American Journal of Clinical Nutrition, 72(2): 618-623.
5. Rivero, J. L., Sporleder, H. P., Quiroz-Rothe, E., Vervuert, I., Coenen, M., & Harmeyer, J. (2002). Oral L-carnitine combined with training promotes changes in skeletal muscle. Equine Veterinary Journal. Supplement, 34: 269-274.