Syafwan, S.; Budiansyah , A.; Haroen, U.; Simanungkalit, K.; Sembiring, L. A. B.; Aritonang, I. L. The Impact of Various Calcium Sources Offered to Arabic Hens During Their Early-Laying Stage on Calcium Consumption and Egg Production. J. Adv. Vet. Anim. Res 2023, 10, 30-41.