Fulvic Acid from Oil Palm Empty Fruit Bunches as Feed Additive Improves Digestive Tract and Intestinal Morphology in Broilers: Aditif Pakan Asam Fulvat Tandan Kosong Kelapa Sawit untuk Memperbaiki Saluran Pencernaan dan Morfologi Usus pada Ayam Pedaging. JINTP [Internet]. 2025 Aug. 31 [cited 2025 Dec. 23];23(2):138-45. Available from: https://journal.ipb.ac.id/jurnalintp/article/view/68370