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Table 7 Results of the linear mixed-effects model for the fattening 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

Fattening Individual models Full model Final modela
Fixed effect Estimate P-value Estimate P-value Estimate P-value
Week −0.008 0.759 0.059 0.006 −0.724 0.009
SG (CG = baseline) −0.075 0.724 −0.082 0.681   
day/night temperature range −0.061 0.032 −0.033 0.303   
average temperature −0.046 0.278 −0.077 0.088   
ammonia concentration 0.016 0.007 0.017 0.015 0.016 0.007
air velocity −0.061 0.935 0.939 0.237   
  1. arandom effect batch:pen (Intercept): variance 0.2492, residual variance 0.3337