Table 3.

Influence of drylot housing or pasture on cow body weight (BW), body condition score (BCS), hair coat score (HCS), milk production, and milk composition

Item	Treatment1		SEM	P-value
	DL	PAST
BW, kg
Initial2	686	680	10.6	0.59
Weaning3	662	599	8.4	<0.01
BCS
Initial	6.7	6.6	0.10	0.53
Weaning	6.2	5.9	0.09	<0.01
Cow HCS4
Initial	2.4	2.3	0.26	0.92
Weaning	1.0	1.2	0.04	<0.01
Milk production5, kg/d	7.6	5.3	0.60	0.02
Milk composition6
Fat, %	1.7	1.9	0.35	0.57
Protein, %	2.8	2.9	0.12	0.26
Lactose, %	4.9	4.8	0.09	0.18
Total Solids	10.6	10.7	0.34	0.61
MUN, mg/dL	4.8	13.9	1.00	0.01

¹DL cow/calf pairs were housed on concrete lots with open front sheds, cows were limit-fed TMR formulated for maintenance and calves had ad libitum access to TMR, and PAST cows rotationally grazed pasture, calves offered creep feed 3 wk prior to weaning.

²81 ± 15.3 d postpartum, a 4% pencil shrink was applied to BW.

³ 192 ± 15.3 d postpartum, 16–20 h shrink with access to water was applied to account for differences in gut fill.

⁴Hair coat score; 1 to 5, in which 1 = slick and 5 = unshed.

⁵Determined by weigh-suckle-weigh at 142 ± 11.5 d postpartum.

⁶Determined from 36 cows per treatment (6 cows per pen).