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http://ri.uaemex.mx/handle20.500.11799/66041| Title: | Effect of increasing levels of seven tree species extracts added to a high concentrate diet on in vitro rumen gas output | Keywords: | in vitro gas production;plant extracts;rumen fermentation;info:eu-repo/classification/cti/6 | Publisher: | Animal Science Journal | Project: | Vol.;85 | Description: | There is a constant relationship between PSM at relatively low and moderate concentrations, and gas production (GP). This depends on the nature, activity and concentration of its active principles (Jiménez-Peralta et al. 2011; Salem et al. 2014). Rumen microorganisms have the ability to degrade low concentrations of alkaloids (Wachenheim et al. 1992), saponins (Hart et al. 2008) and phenolics (Varel et al. 1991) and utilize them as an energy source, without negative effects on rumen fermentation. This study was conducted to investigate the effects of increasing levels of extracts of Byrsonima crassifolia, Celtis pallida, Enterolobium cyclocarpum, Fraxinus excelsior, Ficus trigonata, Phoradendrom brevifolium and Prunus domestica on in vitro gas production (GP) and ruminal fermentation of a high concentrate diet. Plant extracts were prepared at 1 g dry matter (DM)/8 mL of solvent mixture (methanol : ethanol : water, 1:1:8) and added at levels of 0, 0.6, 1.2 and 1.8 mL/g DM of a high concentrate diet. In vitro GP was recorded at 2, 4, 6, 8, 10, 12, 24, 48 and 72 h of incubation. Increasing addition of extracts linearly increased (P < 0.001), the GP24, GP48 and GP72 (mL/g DM), and linearly decreased (P < 0.001), the discrete GP lag time. Moreover, increasing extract doses linearly increased (P < 0.001) the asymptotic GP and decreased (P < 0.001) the rate of GP. GP6 was not impacted by treatments and GP12 increased linearly (P = 0.01) with increasing addition of extracts. Rumen pH declined linearly (P < 0.05) with increasing doses of extracts added. As no interactions (P > 0.05) occurred between the extracts and doses, it could be conclude that all extracts positively modified rumen fermentation at doses of 1.2 to 1.8 mL extract/g diet DM. |
URI: | http://ri.uaemex.mx/handle20.500.11799/66041 | Other Identifiers: | http://hdl.handle.net/20.500.11799/66041 | Rights: | info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0 |
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