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Dietary supplementation with natto fermented by Bacillus subtilis var. natto strain TTCC903 alleviates heat stress and improves egg production in aged laying hens

Suzuki K, Ikarugi H, Nishikawa T, Kadoya R 2026 Poultry science

Abstract

Heat stress is a major constraint on poultry production, particularly in aged laying hens with diminished thermoregulatory and metabolic capacity. Probiotics, including Bacillus species, have been proposed as dietary supplements to mitigate these effects. This study investigated whether supplementation with natto…

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Studied ingredients

Species involved

Laying hen

Keywords

Bacillus subtilisHeat stressProbioticsEgg productionaged laying hens

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