Fig. 1.
Sampling points in process line
Table 1.
Shannon and Simpson index values of the bacterial microbiome diversity along poultry slaughter lines by slaughtering stage and environmental sample type
| Samples | Slaughtering stages | Environmental | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| AD | AE | AC | AS | ES | SW | CW | PH | EA | PA | SA | |
| Shannon | 6.040 | 5.562 | 6.347 | 6.847 | 5.331 | 4.427 | 6.474 | 6.422 | 3.732 | 2.452 | 2.852 |
| Simpson | 0.956 | 0.939 | 0.956 | 0.973 | 0.920 | 0.756 | 0.973 | 0.970 | 0.865 | 0.679 | 0.794 |
Fig. 2.
Principal coordinate analysis of beta diversity in the bacterial microbiome along poultry slaughter lines by slaughtering stage and environmental source
AD – after defeathering; AE – after evisceration; AC – after chilling; AS – after storage; ES – environmental surfaces; SW – scalding water; CW – chilling water; PH – personnel hands; EA – evisceration air; PA – packaging air; SA – storage air
Fig. 3.
Correlation of beta diversity in the bacterial microbiome along poultry slaughter lines by slaughtering stage and environmental source. Darker blue and violet shades in the left figure represent stronger positive correlations, and red shades stronger negative correlations. Darker blue shades in the right figure represent correlations which are not statistically significant, and white shades statistically significant correlations
AD – after defeathering; AE – after evisceration; AC – after chilling; AS – after storage; ES – environmental surfaces; SW – scalding water; CW – chilling water; PH – personnel hands; EA – evisceration air; PA – packaging air; SA – storage air
Fig. 4.
Microbial diversity along poultry slaughter lines by slaughtering stage
AD – after defeathering; AE – after evisceration; AC – after chilling; AS – after storage
Fig. 5.
Microbial diversity along poultry slaughter lines by environmental source
PH – personnel hands; ES – environmental surfaces; SW – scalding water; CW – chilling water; SA – storage air EA – evisceration air; PA – packaging air