Table 1 Overview of herd characteristics. All herds were classified as specific pathogen free (SPF) with modifications. SPF classified herds (with no modifications) are free from M. hyopneumoniae, A. pleuropneumoniae, Porcine reproductive and respiratory syndrome virus, Toxigenic Pasteurella multocida, Sarcoptes scabiei var. suis, Haematopinus suis (lice) and Brachyspira hyodysenteriae
From: Lesions and pathogens found in pigs that died during the nursery period in five Danish farms
Herd | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
SPF Herd health statusa | Myc, AP12 | Myc, AP12 | Myc | Myc | Myc, AP6, AP12 |
Number of sows | 600 | 760 | 1350 | 0b | 0b |
Pen-places (number of nursery pigs) | 3100 | 4300 | 3300 | 8600 | 2400 |
Pen-places (number of slaughter pigs) | 0 | 2200 | 0 | 0 | 450 |
Pigs per batch | 349–422 | 358–493 | 314–740 | 850–1000 | 245–429 |
No. of dead pigs (in five batches)c | 32 | 84 | 26 | 110 | 36 |
Mortality rate, % | 1.6 | 4.1d | 1.1d | 2.3 | 2.1 |
Average body weight of dead pigs (min–max), Kg | 5.5 (0.6–26.7) | 9.1 (1.9–33.6) | 10.4 (3.0–31.6) | 7.4 (2.3–31.8) | 9.8 (1.9–31.1) |
Feed type | Home mixed non-pelleted feed | Home mixed non-pelleted feed | Home mixed non-pelleted feed | Home mixed non-pelleted feed | Commer-cial pellet feed |
Medicinal zinc oxidee | Yes | Yes | Yes | Yes | No |