Item | Parity | No. | ME level, Mcal/kg | Â | Â | P-value | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |  |  | 3.06 | 3.16 | 3.20 | 3.25 | 3.30 | 3.40 | Mean3 | SEM | Treat | Linear | Quadratic |
Weaning to estrus interval, d | 1 | 26 | 6.50 | 6.50 | 6.00 | 6.25 | 6.20 | 5.60 | 6.16x | 0.54 | 0.87 | 0.23 | 0.72 |
 | 2 | 25 | 6.25 | 6.00 | 5.50 | 5.50 | 5.60 | 5.75 | 5.77xy | 0.45 | 0.86 | 0.35 | 0.35 |
 | 3+ | 79 | 5.69 | 5.62 | 5.15 | 5.14 | 5.15 | 5.31 | 5.34y | 0.32 | 0.72 | 0.25 | 0.35 |
 | Overall2 | 130 | 5.93 | 5.82 | 5.35 | 5.39 | 5.42 | 5.40 | 5.55 | 0.25 | 0.38 | 0.09 | 0.34 |