Frações dos compostos nitrogenados associados à parede celular em forragens tropicais / Fractions of cell wall nitrogenous compounds in tropical forages
Arq. bras. med. vet. zootec
;
59(1): 258-263, fev. 2007. tab
Artículo
en Portugués
| LILACS
| ID: lil-456447
ABSTRACT
The total and undegradable fractions of nitrogenous compounds associated to cell wall organic matrix in some tropical forages were evaluated. Samples of corn silage, elephantgrass silage and sugarcane were used. Neutral detergent insoluble nitrogenous compounds were divided in three different fractions associated with: hemicellulose (HN), cellulose (CN), and lignin (LN). The size of the different fractions varied among feeds. A portion of acid detergent insoluble nitrogen, which is the sum of CN and LN, was potentially degradable in the rumen. A portion of HN was not degradable in the rumen. The heterogeneous dimensions of degradable portion of all nitrogenous compounds among feeds can compromise the estimates of cell wall undegradable nitrogen by simple chemical approaches in tropical forages. The LN overestimated the lignin contents and the correction for those compounds on lignin has been suggested.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Rumen
/
Compuestos de Nitrógeno
/
Pennisetum
/
Lignina
Idioma:
Portugués
Revista:
Arq. bras. med. vet. zootec
Asunto de la revista:
Medicina Veterinaria
Año:
2007
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade Federal de Viçosa/BR
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