Table 1. Prevalence of Salmonella isolates from chicken slaughterhouses and pig slaughterhouses.
| Chickens | Pigs | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hebi | zhoukou | Total | Hebi | Luohe | Total | |||||||
| Seasons* | No. of samples | No. of positive samples | No. of samples | No. of positive samples | No. of samples | No. of positive samples | No. of samples | No. of positive samples | No. of samples | No. of positive samples | No. of samples | No. of positive samples |
| Spring | 35 | 15(42.9%) | 38 | 9(23.7%) | 73 | 24(32.9%) | 33 | 8(24.2%) | 36 | 14(38.9%) | 69 | 22(31.9%) |
| Summer | 35 | 12(34.3%) | 35 | 19(54.3%) | 70 | 31(44.3%) | 33 | 15(45.5%) | 24 | 9(37.5%) | 57 | 24(42.1%) |
| Autumn | 36 | 25(69.4%) | 35 | 30(85.7%) | 71 | 55(77.5%) | 33 | 7(21.2%) | 33 | 7(21.2%) | 66 | 14(21.2%) |
| Winter | 35 | 7(20.0%) | 34 | 11(32.4%) | 69 | 18(26.1%) | 21 | 9(42.9%) | 27 | 1(3.7%) | 48 | 10(20.8%) |
| Total | 141 | 59(41.8%) | 142 | 69(48.6%) | 283 | 128(45.2%) | 120 | 39(32.5%) | 120 | 31(25.8%) | 240 | 70(29.2%) |
*Definition of seasons: Spring (March, April, May), Summer (June, July, August), Autumn (September, October, November), Winter (December, January, February)