SALSABILA LN, FITRI A, SITANGGANG FEM, PERMANA IG, FARIDA WR, ANZHANY D, et al. Effect of tannin and amino acid supplementation on growth, digestibility, and blood parameters in heifer calves. Nusantara Biosci [Internet]. 2025 Aug. 12 [cited 2026 Jun. 9];17(2). Available from: https://www.smujo.id/nb/article/view/21656