↗ public sourceswww.actifeed.com/yucca-schidigera.html· 5 studies, 4 independent/mixed
Evidence · moderate
The active substance is backed by 5 studies including meta-analyses; the verdict per claim below reflects what the literature actually shows, not the brochure. Strength reflects the active substance, not the brand.
What the manufacturer claims
Free
Captured from the product page, typed and attributed — the producer’s own statements, checked against the literature below.
Environmental
Controls ammonia (rumen, slurry, litter) and faecal/excreta odours across species
Environmental
Anti-methanogenic in ruminants (reduces methane)
Physiological
Antiprotozoal in monogastrics and supports digestive-tract health and rumen nitrogen metabolism (bypass protein)
Performance
Improves zootechnical performance
Manufacturer’s own words — not independently verified. The ledger below gives the evidence verdict for each.
Claim ↔ evidence ledger
Verdict free · receipts in Power
Each claim against the studies on the active substance, with the funding split. Open a row for the studies behind the verdict.
Claim
Verdict
Evidence & funding
EnvironmentalControls ammonia (rumen, slurry, litter) and faecal/excreta odours across species
Supported
1 study · 100% indep
›
Read Ammonia/odour control via lower nitrogen excretion and ammonia binding is well supported independently across poultry and rumen.
2019
Effects of liquid Yucca supplementation on nitrogen excretion, intestinal bacteria, biochemical and performance parameters in broilersLowered nitrogen excretion and ammonia and improved performance/carcass traits vs unsupplemented control
EnvironmentalAnti-methanogenic in ruminants (reduces methane)
Contradicted
1 study · 0% indep
›
Read The anti-methanogenic claim is not supported: a meta-analysis found no in vivo methane reduction from saponins.
2014
Meta-analysis on methane mitigating properties of saponin-rich sources in the rumen: influence of addition levels and plant sourcesNo effect on CH4 emission, rumen fermentation, digestibility or milk yield; rumen NH3 lower with yucca saponins (P<0.05)
PhysiologicalAntiprotozoal in monogastrics and supports digestive-tract health and rumen nitrogen…
Mixed
1 study · 100% indep
›
Read Antiprotozoal/performance benefit under coccidiosis challenge is real, but oocyst counts were not significantly reduced; bypass-protein not directly tested.
2022
Yucca schidigera improves performance and lowers oocyst counts in Eimeria-challenged broilersYucca 500 g/t raised body weight (2.058 vs 1.971 kg) and improved FCR (1.510 vs 1.575) vs challenged control; oocyst counts not significantly lowered
Read Zootechnical performance improvements shown in independent broiler trials.
2023
Comparison of Yucca saponin, Yucca schidigera and Quillaja saponaria on growth performance, immunity, antioxidant capability and intestinal flora in broilersYucca/Quillaja saponins improved growth, ammonia metabolism, immunity and gut flora vs control
Safety and efficacy of a feed additive of Quillaja saponaria and Yucca schidigera (Magni-PHI) for poultry (EFSA FEEDAP)Safe at 250 mg/kg complete feed (3.58% saponins), margin of safety 20
Bottom line. The strongest, most consistent independent evidence is for ammonia and odour control: yucca saponins lower nitrogen excretion and rumen ammonia across poultry and ruminants.
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Evidence — on the active substance
Table free · full-text in Power
Why these studies The evidence for a proprietary product is the evidence for its active substance. These are the studies (meta-analyses first) behind the verdicts above, with funding labelled.
Year
Study & effect size
Funding
Type
Access
2014
Meta-analysis on methane mitigating properties of saponin-rich sources in the rumen: influence of addition levels and plant sourcesNo effect on CH4 emission, rumen fermentation, digestibility or milk yield; rumen NH3 lower with yucca saponins (P<0.05)
Yucca schidigera improves performance and lowers oocyst counts in Eimeria-challenged broilersYucca 500 g/t raised body weight (2.058 vs 1.971 kg) and improved FCR (1.510 vs 1.575) vs challenged control; oocyst counts not significantly lowered
Effects of liquid Yucca supplementation on nitrogen excretion, intestinal bacteria, biochemical and performance parameters in broilersLowered nitrogen excretion and ammonia and improved performance/carcass traits vs unsupplemented control
Comparison of Yucca saponin, Yucca schidigera and Quillaja saponaria on growth performance, immunity, antioxidant capability and intestinal flora in broilersYucca/Quillaja saponins improved growth, ammonia metabolism, immunity and gut flora vs control
Safety and efficacy of a feed additive of Quillaja saponaria and Yucca schidigera (Magni-PHI) for poultry (EFSA FEEDAP)Safe at 250 mg/kg complete feed (3.58% saponins), margin of safety 20
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Analysis & tools
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The working map a maker won’t give you — built only from the evidence on this page. Nothing here is marketing.
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Open the analyst workbench
Dose benchmark, the independent-vs-sponsored split, the pooled meta-analysis effects, the contradictions and the gaps — all derived from the studies above.
Dose: label vs effective trial range vs EU max
Independence-of-evidence breakdown
Pooled meta-analysis effect sizes
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Dose benchmark
Label / recommendedNot numerically stated
Effective in trials120-500 mg/kg in poultry; ~10 g/kg DM in ruminants
EU maximum250 mg/kg complete feed for a comparable authorised saponin product (3.58% saponins)
Site lists only presentations (powder/liquid/soluble) and high concentration, not a dose.
EFSA assessed this product’s protected form. Opinion ↗
Meta-analysis effects (pooled)
enteric methane emission Independentno significant reduction in CH4
Pooled estimates from the systematic reviews/meta-analyses above — the closest thing to a settled answer.
Discussion — grounded in the evidence
The strongest, most consistent independent evidence is for ammonia and odour control: yucca saponins lower nitrogen excretion and rumen ammonia across poultry and ruminants.
The anti-methanogenic claim is not supported — a meta-analysis found no in vivo methane reduction from saponin-rich sources.
Under coccidiosis challenge, yucca improves broiler performance to near-anticoccidial levels, but does not consistently lower oocyst counts.
Independent broiler trials show genuine zootechnical performance and gut-flora benefits.
EU status is mixed: Yucca schidigera is a listed feed material (7.12.1/7.12.2) and comparable saponin additives are authorised as zootechnical; the marketed ammonia function is not itself an authorised additive category.
Where studies disagree: Marketing highlights an anti-methanogenic effect, but the pooled in vivo evidence shows no methane reduction from saponins; the ammonia-lowering effect is the robust one. Performance improves under coccidiosis challenge, yet oocyst shedding is not consistently reduced.
Gaps: No independent trial of Actifeed's Mex Yucca specifically. Bypass-protein and the horse/dog/cat joint and odour claims were not covered by the captured studies. No resolvable patent identified for the manufacturer's process.
Manufacturer’s stated mechanism (their words): Steroidal saponins bind/condense ammonia and disrupt protozoal and microbial cell membranes (complexing membrane cholesterol), lowering ammonia and odour, exerting antiprotozoal effects and modifying nitrogen metabolism; glycocomponents also bind ammonia directly.
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Put this beside alternatives on the same active substance (e.g. HMBi / other rumen-protected methionine), and take the data with you.
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