Ruiz, Teodoro M., and Jaime Moyá. “By-Product Feeds As Sources of Fiber for Lactating Cows Fed Low Forage Diets”. The Journal of Agriculture of the University of Puerto Rico, vol. 90, no. 1-2, Apr. 2006, pp. 27-36, doi:10.46429/jaupr.v90i1-2.2959.