Table 3.

Performance of grazing cow–calf pairs on native range utilizing an electronic feeder

	Calvesa		Cowsb			P-value
Item	High	Low	High	Low	SEM	Age class	Intake category	Class × Category
BW, kg
Pasture turnoutc	92.3	89.9	607.9	597.2	10.8	<0.0001	0.549	0.709
June 5d	114.7	115.3	588.9	581.7	10.9	<0.0001	0.766	0.720
July 3	147.8	149.2	585.0	577.9	11.3	<0.0001	0.800	0.707
July 31	182.8	182.8	587.6	577.7	11.1	<0.0001	0.660	0.656
Aug 28	217.5	215.1	581.8	565.9	10.7	<0.0001	0.393	0.529
Finale	249.1	245.6	571.3	563.9	11.7	<0.0001	0.647	0.868
Gainf, kg	134.4	130.3	−17.7	−17.8	4.02	<0.0001	0.602	0.626
ADGg, kg/d	1.41	1.37	−0.19	−0.19	0.04	<0.0001	0.602	0.626

^aCalf divergent mineral intake classified calves as high (>50 g/d) or low (<50 g/d) mineral intake.

^bCow divergent mineral intake classified cows as high (>90 g/d) or low (<90 g/d) mineral intake.

^cPasture turnout weights are the mean value of consecutive day weights of cows and calves on May 15 and 16, 2017.

^dJune 5 weight is the start weight used for the 95-d monitoring period.

^eFinal BW are the mean value of consecutive day weights of cows and calves on September 25 and 26, 2017.

^fGain: the BW gained from start weight to final BW during the 95-d monitoring period.

^gADG: average daily gain is weight gained divided by the 95-d monitoring period.