Ratriyanto A, Indreswari R, Sunarto. Effects of Protein Levels and Supplementation of Methyl Group Donor on Nutrient Digestibility and Performance of Broiler Chickens in the Tropics. Int. J. Poult. Sci. [Internet]. 2014 Sep. 15 [cited 2025 Sep. 22];13(10):575–581. Available from: https://ijpsjournal.org/index.php/ijps/article/view/2098