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Evidence-Based Supplement Research
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Lactobacillus amylovorus and Improved Growth Performance

Research synthesisModerate evidenceMixed effect size4 studies · 4 beneficial · 0 neutral · 0 harmful

Across 4 studies, all reported beneficial effects of Lactobacillus amylovorus on growth performance in livestock and aquaculture species, with effect sizes ranging from small to large (two moderate, one small, one large). The most studied populations were weaning pigs and newborn piglets, but doses were not reported in any study. Evidence is currently limited to animal models, and its relevance to humans is unknown.

  • Studied populations: weaning pigs, newborn piglets, lambs, Asian seabass fingerlings

Caveats: All four studies were conducted in livestock or aquaculture species (pigs, mice, lambs, fish) — relevance to humans is unknown. Dosing information was not reported in any study, limiting generalizability. Two studies had low evidence quality (score 0). Additionally, available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed).

Generated Jul 11, 2026
4 of 4 papers
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