Galindo, J.; Gonz?lez, N.; Sosa, A.; Ruiz, T. E.; Torres, V.; Aldana, A. I.; D?az, H.; Moreira, O.; Sarduy, L.; Noda, A. C. Effect of Tithonia Diversifolia (Hemsl.) Gray (Giant Mexican Sunflower) on the Population of Rumen Protozoa and Methanogens under in Vitro Conditions. Cuban J. Agric. Sci. 2011, 45.