Table 1. Parameter values used in the metapopulation dynamics model reared in a 7-batch rearing system (from: [34,35]).
Parameter description | Value |
---|---|
Duration of a sow reproductive cycle (days) | 147 |
- Duration in service room (days) | 32 |
- Duration in gestating room (days) | 82 |
- Duration in farrowing room (days) | 33 |
Duration of a growing pig cycle (days) | 182 |
- Duration in farrowing room (days) | 28 |
- Duration in nursery room (days) | 49 |
- Duration in finishing room (days) | 105 |
Interval between two successive batches of sows and pigs (days) | 28 |
Culling rate after weaning for sows (%) | 16.4a |
Average number of piglets per litter | 11.5 |
Number of sows per batch | 24 |
Number of piglets per batch | 276 |
Assumptions are based on current knowledge on swIAV.
a16.4% of breeding sows are culled at each reproductive cycle corresponding to a culling rate of 38.5% per year with 2.35 reproductive cycle per sow per year (reproduction performance values, [34]).