Khampa, Sittisak, Pala Chaowarat, Uthai Koatdoke, Rungson Singhalert, and Metha Wanapat. “Manipulation of Rumen Ecology by Malate and Yeast in Native Cattle”. Pakistan Journal of Nutrition 8, no. 7 (June 15, 2009): 1048–1051. Accessed July 18, 2025. https://pjnonline.org/pjn/article/view/945.