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Nutrient requirements of lactating dairy cattle.19
| Milk production, kg | 25 | 54.4 |
|---|---|---|
| DM intakea, kg/day | 20.3 | 30.0 |
| Energy, NElb, Mcal/kg | 1.37 | 1.61 |
| Metabolizable protein, g/d | 1,862 | 3,476 |
| RDPc, % | 9.5 | 9.8 |
| RUPd, % | 4.6 | 6.9 |
| NDFe, % min | 25–33 | 25–33 |
| NFCf, % max | 36–44 | 36–44 |
DM intake = dry matter intake.
NEl = net energy of lactation.
RDP = rumen degradable protein.
RUP = rumen undegradable protein.
NDF = neutral detergent fiber.
NFC = non-fiber carbohydrate.
