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Technological additives · poultry, broilers
Formi NDF
Brand Formi · Manufacturer ADDCON GmbH
↗ public sourceswww.addcon.com/index.php/de//feed/fuetterung/futteradditive· 3 studies, 1 independent/mixed
Evidence · moderate
The active substance is backed by 3 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.
Performance
Improves broiler performance — weight gain, feed conversion and reduced mortality
Safety
Active against pathogenic bacteria, including Salmonella, throughout the whole gastrointestinal tract
Physiological
Improves gut microflora towards a state of eubiosis
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
PerformanceImproves broiler performance — weight gain, feed conversion and reduced mortality
Supported
2 studies · 0% indep
›
Read Performance gains are reported mainly in ADDCON's own meta-analysis and field trials.
2023
Impact of dietary sodium diformate on broiler performance — a meta-analysis (19th European Symposium on Poultry Nutrition)Pooled improvement in broiler weight gain and feed conversion vs controls
FORMI NDF in commercial broiler production, Eastern Europe (Ukraine field trial)+3.6% weight gain, FCR -6.6%, mortality -13%, European Efficiency Factor +12%
SafetyActive against pathogenic bacteria, including Salmonella, throughout the whole gastr…
Supported
1 study · 100% indep
›
Read Pathogen control (Salmonella) is supported by an independent challenge trial.
2024
Dietary sodium diformate improves growth and prevents Salmonella enterica serovar Pullorum infection in chickensRaised growth-related hormone levels and reduced Salmonella Pullorum infection vs control
PhysiologicalImproves gut microflora towards a state of eubiosis
Not addressed
no study
›
The 'eubiosis' microflora claim is plausible from the mechanism but not separately quantified in the captured studies.
IndependentMixedIndustryNone/undisclosed
Bottom line. Sodium diformate extends the diformate concept to poultry, remaining active along the whole gut where free acids do not.
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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
2023
Impact of dietary sodium diformate on broiler performance — a meta-analysis (19th European Symposium on Poultry Nutrition)Pooled improvement in broiler weight gain and feed conversion vs controls
Dietary sodium diformate improves growth and prevents Salmonella enterica serovar Pullorum infection in chickensRaised growth-related hormone levels and reduced Salmonella Pullorum infection vs control
FORMI NDF in commercial broiler production, Eastern Europe (Ukraine field trial)+3.6% weight gain, FCR -6.6%, mortality -13%, European Efficiency Factor +12%
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Analysis & tools
◆ Power
The working map a maker won’t give you — built only from the evidence on this page. Nothing here is marketing.
◆ Power view
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 / recommended~1-3 kg/t feed
Effective in trials1-3 kg/t (broilers)
EU maximumVerify the EU authorisation for sodium diformate
Higher active content than free-acid blends, so lower inclusion than liquid acidifiers.
broiler weight gain and FCR Industryconsistent improvement vs controls
Pooled estimates from the systematic reviews/meta-analyses above — the closest thing to a settled answer.
Discussion — grounded in the evidence
Sodium diformate extends the diformate concept to poultry, remaining active along the whole gut where free acids do not.
An independent challenge trial supports its anti-Salmonella effect and a growth benefit in chickens.
The broader broiler performance gains (weight gain, FCR, mortality, efficiency index) are reported mainly in ADDCON's own meta-analysis and field trials, so independent confirmation of magnitude is limited.
Unlike potassium diformate, its specific EU feed-additive authorisation should be verified before publishing a regulatory status.
It is a hygiene/performance acidifier, not a coccidiostat or antibiotic.
Where studies disagree: The performance evidence is predominantly manufacturer-generated; the independent data so far concern pathogen (Salmonella) control rather than growth magnitude.
Gaps: Few fully independent broiler performance trials. The specific EU authorisation status of sodium diformate needs verification. Patent claimed but no resolvable number cited.
Manufacturer’s stated mechanism (their words): A patented double-salt of formic acid that, unlike free acids metabolised in the upper gut, stays active throughout the bird's gastrointestinal tract, suppressing pathogens (incl. Salmonella) and supporting a eubiotic microbiota and performance.
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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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