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

Table 6 Multivariable linear regression of age, sex and year on horn bud diameter and height of suckler-bred male and female calves at disbudding (n = 191)

	Estimate	SE	P value	Breed	Sex	Age	Year
Horn bud diameter
Intercept	15.09	0.563	<.0001	0.0576	0.0003	0.0009	0.0823
CH	0.96	0.493	0.0533
LM	0.05	0.515	0.9155
SIM	0.00^a	.	.
Female	0.00^b	.	.
Male	1.33	0.360	0.0003
Age 14–28 d	0.00^c	.	.
Age 29–60 d	1.32	0.391	0.0009
2018	0.00^d	.	.
2019	0.68	0.389	0.0823
Horn bud height
Intercept	4.71	0.443	<.0001	0.719	0.0004	0.0536	0.0055
CH	0.24	0.388	0.5358
LM	0.01	0.405	0.9818
SIM	0.00^a	.	.
Female	0.00^b	.	.
Male	1.01	0.284	0.0004
Age 14–28 d	0.00^c	.	.
Age 29–60 d	0.60	0.308	0.0536
2018	0.00^d	.	.
2019	0.86	0.306	0.0055

CH Charolais, LM Limousin, SI Simmental
d days old at disbudding. ^a Referent for breed. ^bReferent for sex. ^cReferent for age. ^dReferent for year.

ISSN: 2046-0481