Skip to main content

Table 5 Multivariable linear regression of breed, age and year on horn bud diameter and height of dairy-bred and suckler-bred male calves at disbudding (n = 181)

From: Horn bud size of dairy-bred and suckler-bred calves at time of disbudding

 

Estimate

SE

P value

Breed

Age

Year

Horn bud diameter

Intercept

15.87

0.715

<.0001

<.0001

0.011

<.0001

HF

3.54

0.733

<.0001

   

CH

1.05

0.750

0.1617

   

LM

0.07

0.784

0.9243

   

SI

0.00a

.

.

   

Age 14–28 d

0.00b

.

.

   

Age 29–60 d

1.31

0.509

0.011

   

2018

0.00c

.

.

   

2019

2.49

0.427

<.0001

   

Horn bud height

Intercept

6.18

0.709

<.0001

<.0001

0.0003

0.4509

HF

3.00

0.727

<.0001

   

CH

0.25

0.743

0.7336

   

LM

0.13

0.777

0.8689

   

SI

0.00a

.

.

   

Age 14–28 d

0.00b

.

.

   

Age 29–60 d

1.84

0.504

0.0003

   

2018

0.00c

.

.

   

2019

0.32

0.424

0.4509

   
  1. HF Holstein-Friesian, CH Charolais, LM Limousin, SI Simmental
  2. d days old at disbudding. a Referent for breed. bReferent for age. cReferent for year