Agriculture
Poultry Input Rate Calculator
Stage starter, grower, and finisher feed for a poultry flock while accounting for mortality, feed intake, phase allocation, bag size, and feed waste.
Flock feed procurement
Project phase feed, delivered tonnes, and bag requirements from live-bird days
A linear mortality assumption estimates average birds present, while normalized phase shares allocate total consumed feed across starter, grower, and finisher inventory.Three-phase feed program
Starter, grower, and finisher inventory across the production cycle
The silos are scaled by procurement mass; the lower flock line shows the assumed steady decline in birds present.Detailed calculation process
Convert bird-days to feed mass, then allocate normalized phase shares
General symbolic formulas
B̄ = B(1 − m/2)Feat = B̄ d i / 10⁶Fbuy = Feat / (1 − w)p′j = pj / ΣpFj = Fbuy p′jNbags = ceil(1000Fbuy/b)Average birds use half of cycle mortality because losses are assumed evenly distributed. Phase percentages are normalized so they always allocate exactly 100% of feed.
Symbols and units
Worked substitution with current inputs
Phase procurement schedule
| Phase | Normalized share | Feed tonnes | Bags | Inventory purpose |
|---|
Use steps
- Use the feed program's average daily intake.
- Enter expected whole-cycle mortality.
- Set shares from the actual phase feed budget.
Examples
Broiler cycle: finisher typically carries the largest mass despite fewer feeding days.
Bulk delivery: use bag count only as an equivalent procurement unit.
Limitations
The model does not formulate nutrients, model sex or strain curves, temperature effects, daily mortality timing, feed conversion, withdrawal feed, bin capacity, or delivery lead time.
Poultry-input FAQ
Why use average live birds?
Birds lost during the cycle do not consume a full cycle of feed.
Must phase shares total 100%?
No. The calculator normalizes positive shares, though actual program shares should be entered accurately.
Is the result a ration recommendation?
No. It is a procurement estimate based on a separately approved feeding program.