Table 2 Mean score of hygiene for the thirteen categories of biosecurity and the overall hygiene score
Categories of biosecurity | Mean value | Level of hygiene | SD | Min | Max |
|---|---|---|---|---|---|
Carcass handling | 92.8 | **** | 16.2 | 57.1 | 100 |
Pest control | 91.8 | **** | 12.4 | 57.2 | 100 |
Anteroom barrier | 88.2 | **** | 6.3 | 70.9 | 97.9 |
Manure handling | 87.9 | **** | 11.9 | 59.2 | 100 |
Cleaning | 87.4 | **** | 8.8 | 60.0 | 98.2 |
Structure on farm | 83.6 | **** | 9.9 | 58.6 | 100 |
Premises | 82.7 | **** | 20.2 | 42.4 | 100 |
Receive day-old chickens | 79.4 | *** | 14.8 | 50.0 | 100 |
Feed and litter | 73.1 | *** | 16.6 | 40.0 | 100 |
Outdoor area | 70.1 | *** | 19.1 | 35.8 | 100 |
Drinking water | 70.1 | ** | 15.5 | 40.3 | 100 |
Human movement | 68.2 | ** | 16.1 | 30.4 | 96.9 |
Ventilation | 55.4 | ** | 20.6 | 11.7 | 100 |
Overall hygiene | 81.8 | *** | 5.73 | 69.1 | 92.2 |