Coalho, M.R., Nogueira Filho, J.C.M., Cunha, J.A. and Lima, C.G. de 2008. <b>Ciliated protozoa in the rumen of cattle under different levels of undegradable protein diets</b&gt; - DOI: 10.4025/actascianimsci.v25i1.2146. Acta Scientiarum. Animal Sciences. 25, 1 (Apr. 2008), 193-199. DOI:https://doi.org/10.4025/actascianimsci.v25i1.2146.