“Casrea Engineering Based on Extruded-Cassava-Urea as Protein Supplement for Slow Release of Ammonia in the Rumen In Vitro” (2011) Animal Production: Indonesian Journal of Animal Production, 10(1). Available at: https://jap.fapet.unsoed.ac.id/index.php/JAP/article/view/1186 (Accessed: 31 October 2026).