2020. Digestibility of Crude Protein and Crude Fiber Goat Feed that Given Betel Leaf (Piper betle Linn) in the Feed Based on Ammoniated Rice Straw. ANGON: Journal of Animal Science and Technology. 2, 2 (Jul. 2020), 106–116. DOI:https://doi.org/10.20884/1.angon.2020.2.2.p106-116.