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Table 6 Results of the generalized linear mixed-effects model for the fattening period with dichotomized pen-week (at least one pig with score ≥1 vs. no pig with score ≥1) 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

0.062

0.429

−0.091

0.037

−0.067

0.087

SG (CG = baseline)

−0.380

0.325

−0.390

0.313

  

day/night temperature range

−0.119

0.027

−0.106

0.074

−0.119

0.027

average temperature

  

−0.108

0.259

  

ammonia concentration

0.018

0.174

0.013

0.405

  

air velocity

−0.522

0.729

1.162

0.479

  
  1. arandom effect batch:pen (Intercept): variance 1.301