Prospective comparison of the digestive tract resistome and microbiota in cattle raised in grass-fed versus grain-fed production systems
Kwon J, Tanner W, Kong Y, Wade M, Bitler C, Chiavegato M, Pettigrew M. Prospective comparison of the digestive tract resistome and microbiota in cattle raised in grass-fed versus grain-fed production systems. MSphere 2025, 10: e00738-24. PMID: 39950811, PMCID: PMC11934311, DOI: 10.1128/msphere.00738-24.Peer-Reviewed Original ResearchConceptsFarm management strategiesPost-weaningGrain dietGrass-fedFeed additivesPre-harvestProduction systemsResistance genesCattle production systemsPre-weaning periodFarm management practicesAbundance of antibiotic resistance genesBacterial communitiesFecal swab samplesPasture-raisedDiversity of ARGsGrain-fedBeef cattlePre-weaningMonths of ageGrowth promotionCattleBacterial community changesFood animalsFecal swabs
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