主要ポイント
- Compare offers only after normalising Incoterms, moisture basis and nutrient content.
- A cheaper tonne with lower digestible nutrient content can be the more expensive purchase.
- Include the cost of verification and the cost of failure in the comparison.
Normalise before you compare
Two offers are only comparable when they are converted to the same delivery point, the same moisture basis and the same nutrient reference. An FOB offer and a CIF offer are not the same commercial object, and a 46% protein meal at 12.5% moisture is not the same object as 46% at 10%.
The cost components buyers routinely omit
Sampling and laboratory work, port storage, demurrage exposure, shrinkage during transfer, reconditioning of caked material, and the reformulation cost when a nutrient lands outside specification. These appear in operations budgets rather than procurement budgets, which is why they escape the comparison.
Cost per delivered nutrient
For protein meals, the practical measure is cost per unit of digestible amino acid delivered into the formula. For energy sources, cost per megajoule of metabolisable energy. These metrics survive origin changes and currency moves in a way that price per tonne does not.
| Component | Usually visible | Typical omission risk |
|---|---|---|
| Product price | Yes | Low |
| Freight and insurance | Yes | Incoterm mismatch |
| Duties and clearance | Partly | Tariff classification |
| Sampling and laboratory | No | High |
| Storage loss and reconditioning | No | High |
| Quality deviation and reformulation | No | Very high |
確認事項
- All offers converted to the same Incoterm and delivery point
- Moisture basis stated and applied to the nutrient comparison
- Testing, handling and expected loss allowances included in the model
管理すべきリスク
- Selecting on unit price and absorbing the difference in operations
- Ignoring currency and payment-term cost in a multi-origin comparison
- Underestimating demurrage exposure on a discharge-constrained route
よくある誤り
- Comparing FOB and CIF offers side by side
- Using declared crude protein rather than digestible nutrient content
- Excluding the cost of the verification programme the purchase requires
用語
- TCO
- Total cost of ownership — all costs of acquiring, verifying, storing and using a material.
- Shrinkage
- Quantity loss between shipped weight and usable weight, from moisture change, dust, spillage or handling.
よくある質問
Is the lowest total cost always the right choice?
No. Supply reliability, documentation quality and specification consistency carry value that a single-period cost model does not capture. Total cost narrows the field; supply risk decides between the finalists.
How do you cost a quality deviation?
Estimate the reformulation cost to restore the nutrient target, plus any re-testing, plus the operational cost of holding the lot. Documented deviations from past lots make this an evidence-based number rather than a guess.