Nano-Se Assimilation and Action in Poultry and Other Monogastric Animals: Is Gut Microbiota an Answer?

Table 1 Metallic selenium transformation by microorganisms

Se conversion	Organism used	Reference
Se⁰→SeO₃ ²⁻	Bacillus megaterium	[11]
Se⁰→SeO₃ ²⁻; SeO₄ ²⁻	Thiobacillus ASN-1, Leptothrix MnB1	[13]
Se⁰→Se²⁻	Thiobacillus ferrooxidans	[17]
Se⁰→Se²⁻	Bacillus selenitireducens	[15, 16]
Se⁰→Se²⁻	Veillonella alcalescens	[19]
Se⁰→Se²⁻	Veillonella atypica	[18]