Resumen

GONZALEZ, Gabriela L et al. Determination of quality forage in a rangeland of the Bonaerense Delta region, Argentina. Zootecnia Trop. [online]. 2008, vol.26, n.3, pp.223-225. ISSN 0798-7269.

The aim of the present research was to determine the forage quality of grassland in a silvopastoral system of the Delta of the Paraná river, Argentina. For this research, there was conducted a census that showed the dominance of the species Carex riparia, Cyperus spp., Scirpus giganteus, Scirpus californicus y Polygonum spp. Other species were present in lower proportion, Panicum pernambucensis, Panicum elephantipes, Paspalum urvillei; Lolium multiflorum, Phalaris angusta, Glyceria multiflora, Leersia hexandra, Echinochloa sp. y Alternanthera filoxeroides. Cuts and determination of nutritional value of the samples were made. The results showed the following values: for dry matter 36.6%, crude protein 9.24%, neutral detergent fiber 67.9%, and acid detergent fiber (ADF) 40.6%. Digestibility estimated based on the ADF resulted in an average of 57.3%. Values of total polyphenols were relatively low, ranging between 2.77 and 0.83%, being the average 1.99%.

Palabras clave : wetlands; calf operation; silvopastoral system.

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