Imaizumi, H. et al. 2006. Protein and starch sources varying in rumen degradability to feed dairy cows. Pesquisa Agropecuaria Brasileira. 41, 9 (Sep. 2006), 1413–1420. DOI:https://doi.org/10.1590/S1678-3921.pab2006.v41.7297.