Agriculture
Cattle Input Rate Calculator
Plan cattle dry-matter demand and as-fed forage and concentrate quantities from herd weight, intake rate, ration split, moisture, feeding days, and waste.
Herd feed requirement
Translate live weight and dry-matter intake into forage and concentrate delivery
The ration is balanced on dry matter, then converted to as-fed tonnes with a separate allowance for feed delivered but not eaten.Ration trough
Dry-matter composition and as-fed bulk
The upper trough compares nutrient-carrying dry matter; the lower bars expose the water and waste mass that affect delivery logistics.Detailed calculation process
Balance the ration on dry matter before converting to delivered feed
General symbolic formulas
DM = H W rDMF = DM × sDMC = DM × (1 − s)Fas-fed = DMF / [f(1 − w)]Cas-fed = DMC / [c(1 − w)]Mperiod = d(F + C)Moisture does not satisfy dry-matter intake. Waste is applied to delivered as-fed mass, after the forage/concentrate dry-matter split is established.
Symbols and units
Worked substitution with current inputs
Ration delivery sheet
| Feed fraction | Required DM/day | As-fed/day | Period tonnes | DM share |
|---|
Use steps
- Group cattle by comparable body weight.
- Use lab or supplier dry-matter results.
- Set ration share from a qualified feeding program.
Examples
Wet silage: a lower DM percentage sharply increases tonnes handled.
Growing group: update average live weight through the feeding period.
Limitations
This is an inventory model, not a ration formulation. It does not test energy, protein, fibre, minerals, bunk behaviour, shrink by ingredient, animal class, or veterinary requirements.
Cattle-input FAQ
Why calculate on dry matter?
Water content varies widely and should not be counted as nutrient-bearing feed.
Does waste mean storage shrink?
It can represent combined delivery and bunk loss; use a locally measured factor.
Can pasture be included?
Yes, if estimated pasture dry matter is entered as the forage fraction and availability is independently checked.