“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, vol. 23, no. 2, pp. 138–145, Aug. 2025, doi: 10.29244/jintp.23.2.138-145.