Poosuwan, Kanokkarn, Chaiyapoom Bunchasak, Jumroen Thiengtham, Kanchana Markvichitr, Somchai Chansawarng, and Apassara Chutesa. “Effects of Varying Levels of Liquid DL-Methionine Hydroxy Analog Free Acid in Drinking Water on Production Performance and Gastrointestinal Tract of Broiler Chickens at 42 Days of Age”. The Thai Journal of Veterinary Medicine 45, no. 4 (December 12, 2015): 581–591. accessed September 16, 2026. https://he01.tci-thaijo.org/index.php/tjvm/article/view/43527.