Longitudinal assessment of the prevalence of Fusobacterium necrophorum, Fusobacterium varium, and Salmonella enterica in the nasal cavity, ruminal fluid, and feces of finishing beef steers with and without liver abscesses DOI Creative Commons
Colten W Dornbach, P. R. Broadway, James E. Wells

et al.

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16

Published: March 20, 2025

The objective was to longitudinally assess the prevalence of F. necrophorum subsp. , funduliforme var ium and Salmonella enterica in nasal cavity, ruminal fluid, feces finishing beef steers with without LA. Crossbred ( n = 225; 353 ± 39.6 kg) were transported a feedlot fed high-concentrate diet. Nasal, fecal samples collected following arrival (d 5), 1 week after adaptation diet 35), day before harvest (study end). Livers at examined for LA, cattle subsequently assigned into either control or liver abscess groups. Overall LA 18.7%. concentration decreased fluid increased days on feed p < 0.01). Conversely, Fusobacterium abundance not indicative development except varium being more abundant Abundance greater abscessed tissue than healthy 0.03), although no other differences bacterial observed livers. Overall, affected by feed, but their occurrence.

Language: Английский

Longitudinal assessment of the prevalence of Fusobacterium necrophorum, Fusobacterium varium, and Salmonella enterica in the nasal cavity, ruminal fluid, and feces of finishing beef steers with and without liver abscesses DOI Creative Commons
Colten W Dornbach, P. R. Broadway, James E. Wells

et al.

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16

Published: March 20, 2025

The objective was to longitudinally assess the prevalence of F. necrophorum subsp. , funduliforme var ium and Salmonella enterica in nasal cavity, ruminal fluid, feces finishing beef steers with without LA. Crossbred ( n = 225; 353 ± 39.6 kg) were transported a feedlot fed high-concentrate diet. Nasal, fecal samples collected following arrival (d 5), 1 week after adaptation diet 35), day before harvest (study end). Livers at examined for LA, cattle subsequently assigned into either control or liver abscess groups. Overall LA 18.7%. concentration decreased fluid increased days on feed p < 0.01). Conversely, Fusobacterium abundance not indicative development except varium being more abundant Abundance greater abscessed tissue than healthy 0.03), although no other differences bacterial observed livers. Overall, affected by feed, but their occurrence.

Language: Английский

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