Meta-Analysis of Saponin Effects on Rumen Methane and Fermentation

379 datapoints from 36 in vitro studies quantify how saponin extracts influence rumen fermentation and methane production. Agung Irawan published this meta-analysis in April 2026, identifying 24 distinct saponin sources. The analysis reveals source-dependent effects, with methane reductions ranging from 11% to 40.6%.

Use Cases

• Modeling the dose-response relationship between saponin extract levels and methane production reduction.
• Comparing the effects of specific saponin sources like Sapindus mukorossi and Calendula officinalis on volatile fatty acid (VFA) profiles.
• Analyzing the correlation between saponin supplementation and changes in dry matter degradability (DMD) and protozoa abundance.
• Identifying optimal saponin sources and doses for target outcomes like increased propionate or reduced ammonia (NH3) concentration.

Strengths

• Aggregates 379 datapoints from 36 peer-reviewed studies, providing a substantial evidence base.
• Analyzes 24 distinct saponin sources, enabling comparative analysis of phytochemical effects.
• Reports specific quantitative effects, such as methane reductions of 11-40.6% and DMD changes from -19.1% to +14.3%.

Limitations

• Dataset scope is limited to 171.3 KB, containing only summary statistics from the meta-analysis, not raw experimental data.
• Data is exclusively from in vitro experiments, which may not fully translate to live animal (in vivo) conditions.
• Findings are based on a fixed collection of studies; the evidence base is not dynamically updated.

Provenance

Source

Peer-reviewed in vitro studies sourced from Scopus, PubMed, and Semantic Scholar.

Collection Method

Systematic review and meta-regression analysis conducted by author Agung Irawan.

Time Range

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Freshness

Last updated April 2026.

Geography

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