Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8973767 | Animal Feed Science and Technology | 2005 | 9 Pages |
Abstract
The nutritive value of some Mediterranean browse species collected in Tunisia was studied on the basis of their chemical composition, in vitro digestibility and fermentation kinetics (gas production technique). The browse species evaluated were Arbutus unedo, Calicotome villosa, Erica arborea, Myrtus communis, Phillyrea angustifolia, Pistacia lentiscus and Quercus suber. Species varied widely in crude protein content (55-221Â g/kg DM), condensed tannins (1-360Â g/kg DM), digestible dry matter (DM) (523-681Â g/kg DM), asymptotic gas production (187-343Â ml/g DM) and fractional gas production rate (0.030-0.047Â hâ1). Based on their in vitro digestibility and fermentation kinetics, species could be clustered in two groups of fodder resources, one of medium-high digestibility including the species M. communis, C. villosa, Ph. angustifolia and A. unedo and another group of low digestibility comprising the species P. lentiscus, Q. suber and E. arborea. The in vitro digestibility and gas production parameters were negatively correlated with phenolic compounds, in particular condensed tannins, suggesting that these in vitro techniques can be appropriate for detecting the presence of anti-nutritional substances in shrubs.
Keywords
ADFtotal extractable phenolsNDFG24TEPIVDTETNutritive valueacid detergent fibreTanninsCondensed tanninsGas productionAsymptotic gas productionstandard error of the differenceShrubsLag timeneutral detergent fibredry matterfractional rate of gas productionIn vitro digestibilityIn vitro dry matter digestibilitycrude proteintotal extractable tannins
Related Topics
Life Sciences
Agricultural and Biological Sciences
Animal Science and Zoology
Authors
H. Ammar, S. López, J.S. González,