“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, vol. 2, no. 2, July 2020, pp. 106-1, https://doi.org/10.20884/1.angon.2020.2.2.p106-116.