The Hidden Ketosis Bill: Transition Cow Cost Calculator

Subclinical ketosis rarely shows symptoms — but it quietly drains milk, reproduction, and fresh-cow survival. Plug in your numbers and see what it’s really costing you.

Your Herd

Cows freshening / year 600

Subclinical ketosis incidence 24%

Default 24% = peer-reviewed multicountry average (Brunner et al., 8,902 cows / 541 farms / 12 countries). Many BHBA-tested herds run 40%+ — slide up to find your real number.

Milk price $/cwt

Mailbox / net price per cwt.

Lost milk per affected cow lb

Lost over the lactation (default ~700 lb).

Extra culls / deaths per 100 affected 6

Replacement / culling cost per cow $

Repro & treatment cost per affected cow $

Extra days open, vet, discarded milk, labor.

Prevention program cost / cow / year $

e.g. a rumen-protected transition nutrition strategy.

Expected case reduction from prevention 40%

Capped at 65%. Peer-reviewed RPC/RPM transition trials support reductions in metabolic-disease incidence in this range — only when delivery actually bypasses the rumen.

What It’s Costing You

Annual ketosis cost

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Lost milk$0

Culling & deaths$0

Repro & treatment$0

Recoverable with prevention$0

Cost of prevention program$0

Net annual gain$0

Return per $1 spent—

Most of this leak is preventable — but only if the nutrients survive the rumen.

Before you spend another dollar on a transition program — here’s the one question that determines whether it works →

How this works: Estimates are directional, built from your inputs and published incidence/loss ranges — not a substitute for herd records or veterinary advice. Lost-milk value = affected cows × milk loss × price. Defaults are editable. The Bullvine is editorially independent; this tool names no products.