Dietary iron and metal-based growth promoters differentially modulate the gut resistome and Escherichia coli virulome in weaned pigs
Shya E Navazesh, Anneliek ter Horst, Weizhang Wen, Yanhong Liu, David Kiang, Zhirong Li, Alice Yu, C Titus Brown, Peng Ji · 2026
Read Dietary iron and metal-based growth promoters differentially modulate the gut resistome and Escherichia coli virulome in weaned pigs by Shya E Navazesh, Anneliek ter Horst, Weizhang Wen, Yanhong Liu, David Kiang, Zhirong Li, Alice Yu, C Titus Brown, Peng Ji (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13156864.txt.
Description
Nine authors, led by Shya Navazesh, studied how feed metals reshape pig gut microbes in this 2026 paper. Piglets are often fed high doses of zinc and copper salts to promote growth after weaning. Those metals can also train gut bacteria to resist heavy metals and antibiotics at the same time, a worrying trade.
Iron adds a second question, since nursery diets carry plenty of it. Fifty weaned pigs were split across five diets for twenty-four days, varying the iron and the metal promoters. Deep DNA sequencing of feces then cataloged resistance genes. Full genomes were also read for Escherichia coli, a common gut bacterium, including its disease genes. The study maps which feed recipes push the gut resistome in risky directions.
Catalog record
| CREATOR | Shya E Navazesh, Anneliek ter Horst, Weizhang Wen, Yanhong Liu, David Kiang, Zhirong Li, Alice Yu, C Titus Brown, Peng Ji |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 52 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |