Herd | 1 | 2 | 3 | 4 | Total |
---|---|---|---|---|---|
Piglets (first parity/mature sows) | 54/173 | 117/128 | 53/163 | 104/149 | 328/613 |
Birth weight (kg) Mean (sd) | |||||
First parity piglets1 | 1.36 (0.3)a | 1.26 (0.2)b | 1.34 (0.3)ab | 1.33 (0.2)a | 1.31 (0.2) |
Piglets born by mature sows1 | 1.44 (0.3)a | 1.42 (0.3)a | 1.47 (0.3)a | 1.42 (0.3)a | 1.44 (0.3) |
Clinical appearance (parities combined) | |||||
Hollow flanks | 28% | 52% | 30% | 48% | 40% |
Rough hair coat | 16% | 53% | 48% | 39% | 39% |
Perineal staining2 | 33% | 55% | 29% | 22% | 33% |
Liquid faeces2 | 25% | 40% | 18% | 19% | 26% |
Protruding ribs | 3% | 3% | 0.5% | 1% | 2% |
Fore-knee abrasions | 2% | 0.4% | 0.5% | 5% | 2% |
Dehydration | 0% | 0% | 0% | 0% | 0% |
Clinical signs of failure to thrive 3 | |||||
First parity piglets | 46% | 89% | 88% | 77% | 77% |
Piglets born by mature sows | 51% | 78% | 58% | 74% | 64% |