DFL Box Unit Cost

Allocate DFL-box purchase and shared lot inspection/freight to expected accepted layings, not simply to purchased boxes; acceptance is an explicit scenario.

Description

A DFL box purchase includes layings that may not all be accepted.

A DFL box purchase includes layings that may not all be accepted. Shared lot charges belong in cost per expected accepted laying.

Allocate DFL-box purchase and shared lot inspection/freight to expected accepted layings, not simply to purchased boxes; acceptance is an explicit scenario.

When to use DFL Box Unit Cost

Use this tool to allocate DFL-box purchase and shared lot inspection/freight to expected accepted layings, not simply to purchased boxes; acceptance is an explicit scenario.

Prepare cocoon, larval, leaf or reeling measurements on a consistent batch and moisture basis. Use the declared mass, length and time units.

How to use DFL Box Unit Cost and understand its results

Prepare cocoon, larval, leaf or reeling measurements on a consistent batch and moisture basis. Use the declared mass, length and time units.
Enter boxCount, layingsPerBox, acceptedLayingFraction, boxPurchaseCost, sharedInspectionAndFreightCost using the field table and calculation rules, then run the tool.
Read expectedAcceptedLayings, totalSeedCost, costPerExpectedAcceptedLaying. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
boxCount	Box count	integer	Required
layingsPerBox	Layings per box	integer	Required
acceptedLayingFraction	Accepted laying fraction	number	Required
boxPurchaseCost	Box purchase cost	number	Required
sharedInspectionAndFreightCost	Shared inspection and freight cost	number	Required

Use positive integer boxes and layings, acceptance in (0,1] and nonnegative costs. Return expected accepted layings, total cost and unit cost.^[1]

cost/accepted laying = (boxes × box price + shared costs)/(boxes × layings/box × acceptance)

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
expectedAcceptedLayings	Expected accepted layings	number
totalSeedCost	Total seed cost	number
costPerExpectedAcceptedLaying	Cost per expected accepted laying	number

json

{
  "input": {
    "boxCount": 10,
    "layingsPerBox": 20,
    "acceptedLayingFraction": 0.9,
    "boxPurchaseCost": 30,
    "sharedInspectionAndFreightCost": 60
  },
  "output": {
    "expectedAcceptedLayings": 180,
    "totalSeedCost": 360,
    "costPerExpectedAcceptedLaying": 2
  }
}

Limitations and assumptions

Acceptance is a scenario, not disease-free certification or an observed result.

Numbers and computed results must be finite; overflow produces an error. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Rearing Bed Area Per 1000 DFLs: Plan stage-specific bed areas and whole trays per observed DFL/egg/hatch/survival scenario; DFL is an inventory label, not a disease-free certification or universal density. For a complementary task, use Value Chain Margin Cocoon To Silk: Balance cocoon purchase, explicit conversion costs, silk yield and byproducts into a signed cocoon-to-silk contribution; excludes unspecified capital/tax charges.

References

DFL Box Unit Cost — tool.io

Similar or alternative tools

Rearing Bed Area Per 1000 DFLs
Plan stage-specific bed areas and whole trays per observed DFL/egg/hatch/survival scenario; DFL is an inventory label, not a disease-free certification or universal density.
Value Chain Margin Cocoon To Silk
Balance cocoon purchase, explicit conversion costs, silk yield and byproducts into a signed cocoon-to-silk contribution; excludes unspecified capital/tax charges.