E. W. Evans, G. R. Pearce, J. Burnett, and L. Pillinger, Changes in some physical characteristics of the digesta in the reticulo-rumen of cows fed once daily, Br. J. Nutr, vol.29, pp.357-376, 1973.

C. Demarquilly, J. Andrieu, and P. Weiss, L'ingestibilité des fourrages verts et des foins et sa prévision, Prévision de la valeur nutritive des aliments des ruminants, pp.155-157, 1981.

R. Jarrige, J. Dulphy, P. Faverdin, R. Baumont, and C. Demarquilly, Activités d'ingestion et de rumination, Nutrition des ruminants domestiques, ingestion et digestion. INRA Editions, pp.123-181, 1995.

P. M. Kennedy, Comparative adaptability of herbivores to tropical environments, 1995.

E. Journet, M. H. Grenet, M. Farce, C. Thériez, and . Demarquilly, Recent development in the nutrition of herbivores, Proc. IV Int. Symp. Nutr. Herb., INRA Editions, pp.309-328

R. A. Leng, Factors affecting the utilization of «poor-quality» forages by ruminants particularly under tropical conditions, Nutr. Res. Rev, vol.3, pp.277-303, 1990.

M. N. Mcleod, P. M. Kennedy, and D. J. Minson, Resistance of leaf and stem fractions of tropical forage to chewing and passage in cattle, Brit. J. Nutr, vol.63, pp.105-119, 1990.

M. Inc, MINITAB Statistical Software, Release 14 for Windows, 2003.

D. J. Minson, Forage in ruminant nutrition, vol.92101, p.483, 1990.

D. P. Poppi, D. J. Minson, and J. H. Ternouth, Studies of cattle and sheep eating leaf and stem fractions of grasses. 1. The voluntary intake, digestibility and retention time in the reticulorumen, Aust. J. Agric. Res, vol.32, pp.99-108, 1990.

B. Rémond, H. Brugère, C. Poncet, and R. Baumont, , 1995.

Y. Jarrige, C. Ruckebursch, M. H. Demarquilly, and . Farce, Nutrition des ruminants domestiques, ingestion et digestion, INRA Editions, pp.253-298

D. Sauvant, C. Assoumaya, S. Giger-reverdin, and H. Archimède, Etude comparative du mode d'expression du niveau d'alimentation des ruminants, Renc. Rech. Rum, vol.13, p.103, 2006.

D. Sauvant, P. Schmidely, and J. J. Daudin, Les méta-analyses des données expérimentales : applications en nutrition animale, INRA Prod. Anim, vol.18, pp.63-73, 2005.

M. J. Ulyatt, D. W. Dellow, A. John, C. S. Reid, and G. C. Waghorn, Contribution of chewing during eating and rumination to the clearance of digesta from the ruminoreticulum, Control of digestion and metabolism in ruminants, pp.498-515, 1986.

J. R. Wilson, Plant structures: Their digestive and physical breakdown, Proc. 3 rd Int. Symp.Nutr. Herbivores, Malaysian Society of Animal production, pp.207-216, 1991.

J. R. Wilson, Cell wall characteristics in relation to forage digestion by ruminants, J. Agric. Sci, vol.122, pp.173-182, 1994.

J. R. Wilson, M. N. Mcleod, and D. J. Minson, Particle size reduction of the leaves of a tropical and a temperate grass by cattle. I. Effect of chewing during eating and varying times of digestion, Grass and forage Sci, vol.44, pp.55-63, 1989.