Resumen

GARCIA, Danny E  y  MEDINA, María G. Antinutricional content of the edible biomass in Albizia genus species. Zootecnia Trop. [online]. 2005, vol.23, n.4, pp.345-361. ISSN 0798-7269.

In the Experimental Station of Grass and Forages "Indio Hatuey" from Cuba an investigation was carried out using a totally randomized design and five replicates/species to determine the antinutricional profile of species of Albizia genus (A. berteriana, A. caribaea, A. cubana, A. falcata, A. kalkora, A. lebbeck, A. lucida, A. procera, A. saman, A. semani and A. odoratissima). By means of phytochemical sieving the presence of fifteen groups of secondary metabolites was investigated of which they were detected, in all species, phenols (FT), flavonoids (Flav), tannins that precipitate proteins (TPP), condensed tannins (TC), steroids (Est) and terpenoids (Terp), saponins (Sap), bitter compounds (Amg), alkaloids (Alc) and phytohemoaglutinins (FHg) with numerous presence, remarkable or weighs. The FT levels did not showed appreciable fluctuations, to exception of A. falcata (5.75% DM). The TPP concentrations were differentiated between species and the maximum content corresponded to A. cubana (4.42% DM). The TC oscillated between 2.39 and 6.57% DM and the greater concentrations corresponded to A. berteriana, A. cubana, A. falcata, A. kalkora, A. lucida and A. odoratissima. The amounts of Alc did not show differences and the values oscillated between 0.14 and 0.61% DM. The greater abundance of Sap was observed in A. procera, A. caribaea, A. saman and A. odoratissima, whereas the maximum values of nitrates were in A. falcata, A. berteriana, A. cubana and A. lebbeck. It was concluded that the species A. berteriana, A. falcata, A. kalkora, A. lucida, A. odoratissima, A. procera, A. caribaea, A. cubana and A. saman contain considerable levels of polifenoles and/or Sap that could bring digestive problems in monogastric and ruminant animals. A. lebbeck and A. semani constitutes the best food sources due to the low contents of secondary metabolites.

Palabras clave : Phytochemistry; antinutritional factors; legume; chemical composition; Albizia.