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Analysis of reproductive failures (January 2001-December 2003)
| Jan-Dec 01 | Jan-Dec 02 | Jan-Dec 03 | Target1 | |
|---|---|---|---|---|
| Farrowing rate % | 86.0 | 77.6 | 76.3 | 89 |
| Regular returns % 18-24/39-45 days | n/a | 6.6 | 8.0 | 5 |
| Irregular returns % 23-38 days | n/a | 7.0 | 5.2 | 2 |
| Total returns % | 8.0 | 13.6 | 13.2 | 7 |
| Sows not in pig % NIP ( > 45 days) | n/a | 5.6 | 5.5 | 1 |
| Abortions % | 0.8 | 1.1 | 1.5 | <1 |
| Culled pregnant % | 3.7 | 0.6 | 1.6 | <1 |
| Dead pregnant % | 2.1 | 1.5 | 1.7 | 1 |
| Pigs sold per sow per year | 22.5 | 22.0 | 20.5 | 23 |
1 Alexander and Muirhead (1997)
