2009•DOAJ (DOAJ: Directory of Open Access Journals)Open access
IN SITU DEGRADABILITY OF THE FIBROUS FRACTIONS OF SORGHUM SILAGE
Daniel Ananias de Assis Pires, LÚCIO CARLOS GONÇALVES, JOSÉ AVELINO SANTOS RODRIGUES, Diogo Gonzaga Jayme, ROBERTO GUIMARÃES JÚNIOR, NORBERTO MARIO RODRIGUEZ, I. Borges, Ana Luíza Costa Cruz Borges, Cristiano Gonzaga Jayme, Poliana Rocha Fraga Botelho, Luciana Oliva Barbosa Lima
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Abstract
The objective of this experiment was to study in situ degradability and fermentation kinetics parameters of the neutral detergent fiber (NDF) and acid detergent fiber (ADF) of the silages of four sorghum genotypes, with and without tannin in the grain. A randomized block in split plot design was applied, using animals as blocks, silages as splits and time as sub-splits. Means were compared by SNK test (p<0.05). After 96 hours incubation, NDF and NDA effective degradability ranged from 32.22 to 56.07% and from 26.40 to 54.40%, for silages BR700 and CMSXS165, respectively. The results showed the negative effect of tannin on the ruminal degradability of NDF and ADF of sorghum silages.