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Table 5 Results of the linear mixed-effects model for the nursery period with log-transformed summary score per pen-week as outcome variable and pen nested in batch as random effect (random intercept): results of the models for each individual explanatory variable, the full model and the final model

From: Provision of straw by a foraging tower –effect on tail biting in weaners and fattening pigs

Nursery Individual models Full model Final modela
Fixed effect Estimate P-value Estimate P-value Estimate P-value
Week 0.072 0.001 −0.078 0.070 −0.041 0.001
SG (CG = baseline) 0.259 0.141 −0.322 0.067   
day/night temperature range −0.010 0.698 0.157 0.005 0.135 0.014
average temperature −0.075 0.037 −0.269 0.001 −0.226 0.003
ammonia concentration −0.005 0.682 0.007 0.637   
air velocity −0.321 0.936 3.895 0.402   
  1. arandom effect batch:pen (Intercept): variance 0.1271, residual variance 0.2643