A 500-cow Southwest dairy booked corn silage at $60/ton. Shrink-adjusted, the cows ate $220/ton DM — $0.89/cow/day, $162,000 a year, before milk hit the tank.

The harvest report looked clean. RFV solid, CP in range, NDF in the window. The high group stalled anyway. The Bullvine Podcast walks through the three-layer trap: shrink as a ghost line, DM drift accelerated by 2026 Southwest heat, and group misallocation that feeds your best forage to dry cows. Then the 90-day fix that closes about 63% of the leak.

What You'll Learn

Why a "good" lab sheet hides 5–17% silage shrink and 12–40% wet-byproduct shrink
How $60/ton silage becomes $220/ton DM once shrink and DM drift get honest
Why one NDFd unit is worth $2.40–$4.86/ton DM in lactating cows and zero in far-off dry cows
The four-step, $25,200 walkthrough on 500 cows in a single quarter
When 8% feed-cost-per-cwt drift means the problem is upstream of the ration
What the 30/90/365-day playbook changes by the next harvest

Most ration software prices forage on invoice and stale book DM. Re-price on shrink-adjusted DM and ingredients that looked cheap fall off the inclusion list. Allocate by digestibility, retest the bunker face — not the harvest core — and a 500-cow Southwest herd captures roughly $0.56/cow/day in 90 days. That's not a forecast. That's barn math your lender is already watching.

Full article and sources: https://www.thebullvine.com/farm-economics-management/shrink-adjusted-forage-cost-500-cow/ Subscribe for straight-talking dairy analysis. Share this with a producer who needs it.