Table 3 Description of the dataset for the three selected farms1 according to the parity rank of sows (mean ± standard deviation)
Data outputs/ Parity rank | Farm 1 | Farm 2 | Farm 3 | ||||||
|---|---|---|---|---|---|---|---|---|---|
1–2 | 3–4 | 5 + | 1–2 | 3–4 | 5 + | 1–2 | 3–4 | 5 + | |
Number of farrowings | 1376 | 678 | 1037 | 116 | 118 | 90 | 103 | 83 | 85 |
Previous farrowing (n-1) | |||||||||
Total born/litter (TBn−1) | 14.12 ± 2.8 | 14.55 ± 3.4 | 15.70 ± 3.2 | 15.93 ± 3.8 | 17.18 ± 3.2 | 17.83 ± 3.6 | 14.74 ± 2.4 | 15.43 ± 3.1 | 16.24 ± 3.8 |
% stillborn piglets (%Sn−1) | 4.58 ± 7.5 | 3.89 ± 6.4 | 7.88 ± 7.9 | 5.86 ± 14.8 | 4.11 ± 6.9 | 3.76 ± 5.2 | 5.14 ± 13.2 | 4.56 ± 7.2 | 5.69 ± 6.9 |
BFT at weaning, mm | 12.76 ± 2.6 | 13.13 ± 2.8 | 13.69 ± 2.7 | 14.42 ± 3.3 | 15.20 ± 2.9 | 15.71 ± 3.3 | 11.68 ± 2.2 | 12.45 ± 2.0 | 12.60 ± 1.9 |
At farrowing (n) | |||||||||
Total born/litter (TB) | 14.08 ± 3.0 | 15.29 ± 3.5 | 15.60 ± 3.4 | 16.12 ± 3.6 | 18.03 ± 3.3 | 17.66 ± 3.3 | 14.83 ± 3.1 | 15.84 ± 3.6 | 16.28 ± 3.5 |
Piglets born alive/litter | 13.46 ± 3.0 | 14.22 ± 3.3 | 13.96 ± 3.1 | 15.47 ± 3.6 | 17.23 ± 3.0 | 16.64 ± 3.4 | 14.25 ± 2.9 | 15.01 ± 3.3 | 14.92 ± 3.0 |
% stillborn piglets | 4.19 ± 7.3 | 6.50 ± 9.0 | 9.97 ± 10.1 | 4.01 ± 7.8 | 4.21 ± 5.4 | 5.55 ± 9.0 | 4.63 ± 10.0 | 4.72 ± 7.0 | 7.61 ± 8.1 |
BFT before farrowing, mm | 16.33 ± 3.1 | 16.59 ± 2.9 | 16.97 ± 3.1 | 17.77 ± 3.2 | 18.47 ± 3.6 | 19.00 ± 4.3 | 14.34 ± 2.3 | 15.84 ± 2.3 | 15.69 ± 2.7 |