Table 2.
Multidrug resistance monthly observed among Salmonella isolates recovered from retail raw chickens and their main antibiotic resistance profile.
| Year | Month (isolate no.) | % Resistance to indicated category of antibiotics |
|||
|---|---|---|---|---|---|
| <3 | 3–5 | 6–7 | Total (≥3) | ||
| 2011 | April (n = 83) | 72.3a | 6.0e | 21.7d,e | 27.7e |
| May (n = 94) | 4.3d | 6.4e | 89.4b | 95.7b | |
| June (n = 13) | 61.5a,b | 23.1d | 15.4e | 38.5d,e | |
| July (n = 76) | 3.9d | 51.3c | 44.7c,d | 96.1b | |
| August (n = 32) | 25.0c | 28.1d | 46.9c | 75.0c | |
| September (n = 47) | 57.4b | 10.6e | 31.9d | 42.6d | |
| October (n = 4) | 100a | 100a | |||
| 2012 | January (n = 3) | 100a | 100a | ||
| February (n = 4) | 100a | 100a | |||
| March (n = 50) | 16.0c | 82.0b | 2.0f | 84.0c | |
Values sharing the same superscript letter in each column are not significantly different (P > 0.05).