Table 1 General information of participating pig farms, reported by farmers
From: A survey of straw use and tail biting in Swedish pig farms rearing undocked pigs
Parameter | Nursery units | Finishing pig units | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
n | Median | Mean | SD | Min | Max | n | Median | Mean | SD | Min | Max | |
Total number of pig places | 46 | 815 | 1088 | 894 | 126 | 4000 | 43 | 1200 | 1434 | 1164 | 132 | 6500 |
Number of produced pigs/year | – | – | – | – | – | – | 43 | 3600 | 4484 | 3795 | 350 | 20,000 |
Age at entry (days) | 35 | 35 | 37.9 | 8.9 | 31 | 84 | 42 | 84 | 84 | 8.7 | 63 | 105 |
Weight at entry (kg) | 35 | 10.5 | 11.4 | 5.1 | 9 | 40 | 43 | 30 | 31 | 2.8 | 25 | 37 |
Number of pigs/pen | 45 | 11 | 24 | 43 | 10 | 300 | 43 | 10 | 15 | 17 | 7 | 100 |
Size of pen (m2) | 45 | 6 | 21 | 49 | 3 | 300 | 43 | 9.6 | 19 | 40 | 7 | 250 |
Space allowance/pig (m2) | 44 | 0.5 | 0.53 | 0.13 | 0.3 | 1.9 | 43 | 1 | 0.96 | 0.08 | 0.8 | 2.5 |