“Effects of Chromium, Zinc, and Lemuru Oil Supplementation on the DigestiveSystem and Internal Organs of IPB D1 Chicken”. Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan 13, no. 3 (October 31, 2025): 166–171. Accessed December 24, 2025. https://journal.ipb.ac.id/ipthp/article/view/65444.