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Table 2 Variable importance ranking for the models of heifer conception

From: The creation and evaluation of a model to simulate the probability of conception in seasonal-calving pasture-based dairy heifers

  LR GAM MLR
1 Year: 2003 Month: May Month: June/July
2 Year: 2008 Year: ≥ 2013 CIV PTA
3 Year: 2004 Year: 2011 Age * Month: June/July
4 Month: June/July Breed: HO Breed: NR
5 Age * Month: June/July Year: 2005 Month: May
6 Breed: NR Year: 2012 Breed: MO
7 Year: ≥ 2013 Month: June/July Age * Month: May
8 CIV PTA Age Breed: other
9 Year: 2012 CIV PTA Breed: NO
10 Month: May Year: 2009 Breed: HO
11 Year: 2005 Year: 2010 Breed: JE
12 Breed: NO Year: 2006 Breed: JEX
13 Breed: HO   Breed: FRX
14 Year: 2002   Age
15 Age * Month: May   
16 Breed: JE   
17 Breed: MO   
18 Year: 2009   
19 Year: 2010   
20 Age   
21 Year: 2007   
22 Breed: FRX   
23 Breed: JEX   
24 Year: 2011   
25 Breed: other   
26 Year: 2006   
  1. Legend: LR logistic regression model, GAM generalised additive model, MLR mixed logistic regression model, CIV calving interval PTA (days), FRX Friesian cross, HO Holstein, JE Jersey, JEX Jersey cross, MO Montbeliarde, NO Normande, NR Norwegian Red
  2. * indicates an interaction between two variables