“The Effect of Red Seaweed (Gracilaria sp.) Supplementation in Beef Cattle Feed to Digestibility of Dry Matter and Organic Matter With in Vitro Method”. ANGON: Journal of Animal Science and Technology, vol. 1, no. 3, July 2019, pp. 213-2018, https://doi.org/10.20884/1.angon.2019.1.3.p213-2018.