C. B. Hsu, et al. “The Effect of Glutamine Supplement on Small Intestinal Morphology and Xylose Absorptive Ability of Weaned Piglets”. African Journal of Pig Farming, vol. 3, no. 1, Mar. 2015, pp. 1-6, https://elixirpublishers.in/index.php/ajpf/article/view/673.