{Reference Type}: Journal Article
{Title}: Modulatory effects of dietary tannins on polyunsaturated fatty acid biohydrogenation in the rumen: A meta-analysis.
{Author}: Makmur M;Zain M;Sholikin MM;Suharlina ;Jayanegara A;
{Journal}: Heliyon
{Volume}: 8
{Issue}: 7
{Year}: Jul 2022
{Factor}: 3.776
{DOI}: 10.1016/j.heliyon.2022.e09828
{Abstract}: <B>UNASSIGNED: </B>Tannins are a group of phenolic compounds that can modify the rumen biohydrogenation (BH) of polyunsaturated fatty acids (PUFA), but to date results obtained have been inconsistent. This study therefore aims to conduct a meta-analysis of the scientific literature related to the effects of tannins on rumen BH and fermentation.<BR><B>UNASSIGNED: </B>A total of 28 articles were collected from various scientific databases, such as Scopus, Science Direct and Google Scholar, and the data were analysed using a random effects model and meta-regression for rumen BH. The publication bias on the main variables of rumen fermentation was assessed using a funnel plot and Egger's test.<BR><B>UNASSIGNED: </B>An increase in tannin levels significantly reduced methane production (p < 0.001) and the population of Butyrivibrio fibrisolvens (p < 0.05). Dietary tannins also decreased the SFA proportion (p < 0.001) and increased (p < 0.001) the rumen monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) proportions. In additions, there were negative relationships between dietary tannin levels and BH rates of C18:2 n-6 and C18:3 n-3 (p < 0.05).<BR><B>UNASSIGNED: </B>Dietary tannins modulate the rumen fermentation profile, mitigate methane emissions, and inhibit rumen BH of PUFA.