Table 1.
Location and characteristics of the ten sample farms
| Sampling date | Chicken category | Housing system | County / Country | Code | Number of hens | |
|---|---|---|---|---|---|---|
| A |
09-05-19 |
Laying hens |
Aviary-indoor |
Jönköping |
Jonk |
6 |
| B |
09-06-08 |
Laying hens |
Aviary-indoor |
Kalmar |
Kal1 |
1 |
| C |
09-06-16 |
Broiler breeders |
Litter indoor |
Skåne |
Skan |
6 |
| D |
09-06-25 |
Laying hens |
Aviary-indoor |
Halland |
Hall |
1 |
| E |
09-07-04 |
Laying hens |
Aviary-indoor |
Östergötland |
Ost1 |
1 |
| F |
09-07-06 |
Laying hens |
Litter indoor |
Stockholm |
Stoc |
1 |
| G |
09-07-29 |
Laying hens |
Litter indoor |
Kalmar |
Kal2 |
1 |
| H |
09-08-11 |
Laying hens |
Organic |
Denmark |
Danm |
10 |
| I |
09-08-21 |
Laying hens |
Free-range |
Blekinge |
Blek |
1 |
| J | 09-08-25 | Laying hens | Organic | Östergötland | Ost2 | 1 |