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Abstract
Ramírez-Orduña, R., Ramírez, R.G., Gomez-Meza, M.V., Armenta-Quintana, J.A., Ramírez-Orduña, J.M., Cepeda-Palacios, R. and Ávila-Sandoval, J.M. 2003. Seasonal dynamics of organic matter digestion in browse species from Baja California Sur, Mexico. J. Appl. Anim. Res., 24: 65–78.
With the aim to estimate seasonally the rate and extent of organic matter degradability (EDOM), ten native species from Baja California Sur, Mexico were evaluated. Branches from the legumes: Acacia peninsularis (Brit. L. Rose) Standley; Cercidium floridium (Benth); Mimosa xantii, Gray; Pithecellobium confine (Staiidley) and Prosopis sp. (Torr) and non legumes: Bursera microphylla Gray (Burceraceae); Cyrtocarpa edulis (Brand) Stand (Anacordiaceae); Lippia palmeri, S. Wats (Verbenaceae); Opuntia cholla, Weber (Cactaceae) and Turnera diffusa Wild (Turneraceae) were collected from 16 linear transects of 30m, located randomly. Collections were carried out in each season during three consecutive years. Non legumes species were significantly different in their EDOM during spring and summer, whereas legumes species were not affected by season. Differences between plant types were significant only during spring. Cercidium floridium and O. cholla had EDOM values comparable to alfalfa hay. Other plant species resulted with lower EDOM than alfalfa hay. Turnera diffusa had the lowest EDOM. It may appear that forage quality vary according to season, during fall and winter good quality and during the spring and autumn low quality forages are available.
