Table 3.

Effect of mineral supplement availability on performance of suckling and gestating calves; combined averages of years 1 and 2 for the suckling calf and averages of years 2 and 3 for the gestating calf

	Treatment1
Item	CON	SUPP	SE	P-value6
Suckling calf2
Turn out BW, kg	83.89	82.69	0.836	0.32
Weaning BW, kg	269.02	273.39	2.543	0.24
Calf gain, kg4	185.48	190.77	2.851	0.20
Calf ADG, kg	1.18	1.22	0.018	0.20
Gestating calf3
Day of calving5	17.66	18.06	0.832	0.74
Birth BW, kg	38.51	39.20	0.294	0.11
Turn out BW, kg	87.59	88.61	0.999	0.47
Weaning BW, kg	251.06	252.74	2.239	0.60
Calf gain, kg	163.48	164.18	1.545	0.75
Calf ADG, kg	1.22	1.22	0.024	0.97

¹Treatments were: CON—calves were grazing pastures where they (along with their dams) had no access to a mineral supplement or SUPP—calves were grazing pastures where they (along with their dams) had access to a mineral supplement.

²The suckling calf was considered the calf at-side with the dam during years 1 and 2 that would have had access (or no access) to the mineral supplement with their dam.

³The gestating calf was considered the calf conceived during the grazing season when mineral treatment was applied. The gestating calf was exposed to treatment in utero pasture treatment and born the following spring.

⁴Calf gain (kg) is the total BW gain in the calf from pasture turnout to weaning (pasture removal).

⁵Day of calving refers to the average day of the calving season when calves were born.

⁶Significance considered at P ≤ 0.05.