TABLE 1.

Differences in CTX-resistant and CTX- and NAL-resistant coliform counts in feces between the groups treated with amoxicillin, ceftiofur, and cefquinome and the control group

Coliform resistance and difference evaluatedEstimated difference in coliform count (log CFU/g)95% Confidence limitaAdjusted P value
CTX
    Amoxicillin vs control0.9 (0.30)b0.01, 1.790.0464c
    Cefquinome vs control2.8 (0.30)1.94, 3.73<0.0001c
    Ceftiofur vs control2.5 (0.30)1.62, 3.40<0.0001c
    Amoxicillin vs cefquinome−1.9 (0.30)−2.83, −1.04<0.0001c
    Amoxicillin vs ceftiofur−1.6 (0.30)−2.50, −0.710.0003c
    Cefquinome vs ceftiofur0.3 (0.30)−0.56, 1.221.000
NAL and CTX
    Amoxicillin vs control0.1 (0.37)−1.02, 1.181.000
    Cefquinome vs control1.5 (0.37)0.43, 2.630.0041c
    Ceftiofur vs control0.6 (0.37)−0.53, 1.660.8463
    Amoxicillin vs cefquinome−1.5 (0.37)−2.5, −0.350.0066c
    Amoxicillin vs ceftiofur−0.5 (0.37)−1.58, 0.611.000
    Cefquinome vs ceftiofur−1 (0.37)−0.13, 2.060.1062
  • a The 95% confidence limits of significant differences exclude 0.

  • b Values in parentheses are standard errors.

  • c Statistically significant difference.