Table 6. Regression coefficient estimates for relationships between welfare problems detected by transect sampling, and production outcomes.
Production outcomes1 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
On-farm welfare assessment indicators2 | Mortality | Reasons for rejection | Total rejected | Footpad score | Growth rate | Feed conversion | Production index | ||||
Perosis | Illness | Wounds | Under-weight | ||||||||
Walking difficulties | Mean | 162.53 | 254.75 | 38.82 | 457.45 | 146.61 | 78.23 | -121.23 | 0.30 | -4.44 | -2.74 |
SE | 10.01 | 183.17 | 16.51 | 53.87 | 49.68 | 14.17 | 306.29 | 6.31 | 5.27 | 6.79 | |
Lower 95% CL | 140.23 | -153.39 | 2.04 | 337.43 | 35.92 | 46.66 | -803.69 | -13.77 | -16.19 | -17.86 | |
Upper 95% CL | 184.83 | 662.88 | 75.59 | 577.48 | 257.30 | 109.80 | 561.23 | 14.36 | 7.31 | 12.39 | |
F1, 10 | 263.76 | 1.93 | 5.53 | 72.11 | 8.71 | 30.49 | 0.16 | <0.01 | 0.71 | 0.16 | |
P | <0.001 | 0.195 | 0.041 | <0.001 | 0.015 | <0.001 | 0.701 | 0.963 | 0.419 | 0.696 | |
Illness | Mean | -119.00 | 1085.85 | 804.52 | -234.54 | 525.02 | 707.60 | -267.01 | -4.19 | 17.80 | -18.88 |
SE | 45.82 | 596.08 | 71.29 | 234.15 | 200.61 | 62.55 | 1076.20 | 25.28 | 19.08 | 26.67 | |
Lower 95% CL | -221.09 | -242.30 | 645.67 | -756.25 | 78.04 | 568.24 | -2664.94 | -60.52 | -24.70 | -78.31 | |
Upper 95% CL | -16.92 | 2414.01 | 963.37 | 287.18 | 972.00 | 846.97 | 2130.92 | 52.15 | 60.30 | 40.56 | |
F1, 10 | 6.75 | 3.32 | 127.35 | 1.00 | 6.85 | 127.99 | 0.06 | 0.03 | 0.87 | 0.50 | |
P | 0.027 | 0.099 | <0.001 | 0.340 | 0.026 | <0.001 | 0.809 | 0.872 | 0.373 | 0.495 | |
Skin wounds | Mean | 2.15 | 92.64 | 18.77 | 18.16 | -74.41 | 56.61 | 1644.17 | -0.43 | -1.80 | -0.90 |
SE | 21.08 | 384.19 | 32.20 | 105.85 | 125.56 | 28.33 | 890.20 | 15.76 | 13.44 | 17.03 | |
Lower 95% CL | -44.82 | -763.39 | -52.99 | -217.68 | -354.18 | -6.52 | -339.32 | -35.55 | -31.75 | -38.84 | |
Upper 95% CL | 49.11 | 948.66 | 90.52 | 254.00 | 205.36 | 119.73 | 3627.65 | 34.70 | 28.14 | 37.04 | |
F1, 10 | 0.01 | 0.06 | 0.34 | 0.03 | 0.35 | 3.99 | 3.41 | <0.01 | 0.02 | <0.01 | |
P | 0.921 | 0.814 | 0.573 | 0.867 | 0.567 | 0.074 | 0.095 | 0.979 | 0.896 | 0.959 | |
Small | Mean | 148.00 | -496.08 | 207.95 | -5.35 | 312.85 | 237.95 | 227.03 | 2.77 | -6.26 | -6.93 |
SE | 10.54 | 398.05 | 18.86 | 59.43 | 39.10 | 14.56 | 421.99 | 5.59 | 3.77 | 5.78 | |
Lower 95% CL | 124.51 | -1382.98 | 165.92 | -137.75 | 225.72 | 205.51 | -713.22 | -9.69 | -14.67 | -19.81 | |
Upper 95% CL | 171.49 | 390.82 | 249.98 | 127.06 | 398.98 | 270.40 | 1167.28.95 | 15.23 | 2.15 | 5.96 | |
F1, 10 | 197.09 | 1.55 | 121.55 | 0.01 | 64.01 | 267.09 | 0.29 | 0.25 | 2.75 | 1.43 | |
P | <0.001 | 0.241 | <0.001 | 0.930 | <0.001 | <0.001 | 0.602 | 0.631 | 0.128 | 0.259 | |
Welfare problems index | Mean | 118.19 | 79.18 | 98.53 | 243.75 | 266.67 | 135.85 | 184.61 | 0.78 | -3.39 | -6.051 |
SE | 5.74 | 63.11 | 11.01 | 21.17 | 28.26 | 8.74 | 138.77 | 3.37 | 2.40 | 3.56 | |
Lower 95% CL | 105.78 | -57.15 | 74.75 | 198.01 | 205.63 | 116.96 | -115.17 | -6.51 | -8.57 | -13.75 | |
Upper 95% CL | 130.60 | 215.51 | 122.31 | 289.49 | 327.72 | 154.73 | 484.40 | 8.06 | 1.79 | 1.65 | |
F1, 13 | 423.44 | 1.57 | 80.14 | 132.53 | 89.07 | 241.48 | 1.77 | 0.05 | 2.00 | 2.88 | |
P | <0.001 | 0.232 | <0.001 | <0.001 | <0.001 | <0.001 | 0.206 | 0.822 | 0.181 | 0.113 | |
Litter score | Mean | -0.16 | 1.47 | 0.36 | 1.62 | 0.59 | 0.50 | -1.87 | 0.03 | <0.01 | 0.02 |
SE | 0.04 | 0.82 | 0.06 | 0.25 | 0.17 | 0.06 | 1.42 | 0.03 | 0.02 | 0.03 | |
Lower 95% CL | -0.24 | -0.31 | 0.22 | 1.08 | 0.22 | 0.38 | -4.93 | -0.03 | -0.05 | -0.05 | |
Upper 95% CL | -0.08 | 3.25 | 0.50 | 2.16 | 0.96 | 0.62 | 1.19 | 0.08 | 0.05 | 0.08 | |
F1, 13 | 18.25 | 3.19 | 31.70 | 42.61 | 12.05 | 76.19 | 1.75 | 0.93 | <0.01 | 0.28 | |
P | <0.001 | 0.097 | <0.001 | <0.001 | 0.004 | <0.001 | 0.209 | 0.353 | 0.988 | 0.605 |