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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