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Table 1 Overall effect of dietary zinc on the occurrence of tetA and sul1 genes in pigs (n = 336)

From: High dietary zinc supplementation increases the occurrence of tetracycline and sulfonamide resistance genes in the intestine of weaned pigs

Dietary Zn Antibiotic resistance genes [log copy number/g sample]
tetA sul1
Low Zn 4.78 (±0.63)a 5.43 (±0.63)a
Intermediate Zn 4.94 (±0.59)a 5.50 (±0.69)a
High Zn 5.29 (±0.60)b 5.82 (±0.52)b
  1. Sampling days: 6, 13, 20 or 27 days post-weaning (26 days); intestinal sites: stomach, mid-jejunum, terminal ileum, colon ascendens
  2. a,bSignificantly different within a column (p ≤ 0.05; Mann–Whitney U test)