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Table 4 Antimicrobial usage and resistance to selected antimicrobial agents used in commercial farms in Nigeria

From: Association between antimicrobial usage and resistance in Salmonella from poultry farms in Nigeria

Antimicrobials Resistance (% of strains)
(n = 26)
Antimicrobial resistant genes present (% of strains) (n = 26) Average antimicrobial usage (mg/kg/week) Correlation coefficients (r)
Trimethoprim 19 12 1  
Tetracycline 58 50 5 a{0.9 [CI = 0.2–0.99, p = 0.03]
Sulphonamides 65 46 4 b{0.83 [CI = −0.004-0.99, p = 0.05]
Gentamicin 42 35 2  
Ciprofloxacin 46 23 3  
  1. Coefficient between antimicrobial usage and percent of isolates with resistance acoefficient between antimicrobial usage and isolates with resistance genes b, n Number of isolates, C.I Confidence interval.