Variable | Treatments1
| SE | P value |
---|
G0 | G1 | G2 |
---|
Estimated NEL balance2
|
 Maintenance, Mcal of/d | 10.3c
| 12.8b
| 13.9a
| 0.03 | 0.01 |
 Milk, Mcal/d | 27.8x
| 24.0y
| 26.5xy
| 1.25 | 0.09 |
 Balance, Mcal/d | 2.7a
| −5.2b
| −5.6b
| 1.30 | 0.01 |
Estimated MP balance2
|
 Milk, g of MP/d | 1780 | 1620 | 1660 | 70.24 | 0.30 |
 Balance, g of MP/d | 0.08a
| −0.26b
| −0.34b
| 0.08 | 0.01 |
 BW, kg | 646 | 655 | 618 | 15 | 0.23 |
 BCS, units | 2.9 | 2.8 | 2.8 | 0.07 | 0.53 |
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1Feeding strategies from calving (day 0) to 60 days postpartum: DM offered as 100 % total mixed ration (TMR; n = 9), G1 DM offered as 50 % pasture in one (am) grazing session (6 h) plus 50 % TMR (n = 9), G2 DM offered as 50 % pasture in two (am/pm) grazing sessions (9 h) + 50 % TMR (n = 7)
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2Required NEL and MP for maintenance (including NEL for activity) and milk, values were calculated according to NRC [14]
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a,b,cLetters denote least squares means differ (P ≤ 0.05)
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xyIndicate a tendency 0.05Â <Â PÂ >Â 0.10, for the interaction between cow groups and treatments