Efecto de un extracto de regaliz rico en flavonoides sobre la actividad protozoaria y la fermentación ruminal in vitro
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[1] Aberystwyth University
Aberystwyth University
Aberystwyth, Reino Unido
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- Localización: XVI Jornadas sobre Producción Animal: 19 y 20 de mayo de 2015, Zaragoza / Javier Álvarez Rodríguez (aut.), Begoña Panea Doblado (aut.), Jorge Hugo Calvo Lacosta (aut.), Mireia Blanco Alibés (aut.), José Alfonso Abecia Martínez (aut.), Daniel Villalba Mata (aut.), María Ángeles Latorre Górriz (aut.), Vol. 1, 2015, ISBN 978-84-606-7969-1, págs. 143-145
- Idioma: español
- Títulos paralelos:
- In vitro effect of a liquorice extract rich in flavonoids on protozoa activity and rumen fermentation
- Enlaces
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Resumen
Different doses (0.25, 0.5, 1 and 2 mg/ml) of a liquorice extract rich in flavonoids were incubated in vitro in diluted cow’s rumen fluid with [14C] radioactive-labelled bacteria to study the effect on bacteria predation by protozoa. Additionally, 24 h in vitro incubations with this extract at 0.5, 1 and 2 mg/ml in diluted rumen fluid were carried out to determine the effect on fermentation and protozoa motility. Incubations of liquorice extract added at 0.5 mg/ml resulted in a reduction (P<0.001) of bacterial predation by protozoa, in comparison with the control. This effect was stronger (P<0.001) at 1 and 2 mg/ml, causing the complete abolition of protozoa. In vitro 24 h incubations with 1 and 2 mg/ml of liquorice extract resulted in a decrease of acetic/propionic ratio and ammonia concentrations (P<0.001 and P=0.01, respectively). Also, protozoa motility over time was reduced (P<0.001) when the highest concentration of the extract was incubated. These results showed the potential of a liquorice extract rich in flavonoids as a antiprotozoal agent causing a shift in rumen fermentation towards propionate and decreasing ammonia concentration. Therefore, the addition of a liquorice extract rich in flavonoids could potentially improve the efficiency of the feed utilization by ruminants.
