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Sheet 00 · Topic atlas

Cowdemy

A dairy cow, drawn as a system. Pick a region and open one sheet: the schematic, the field notes, the numbers, the farm signs, and a five-question check.

02 · Rumen

Fermentation, fiber, and starch load

Enter the Rumen sheet3 live sheets
Cow atlasFIG. 00 · HOLSTEIN · LEFT FLANKSCALE N/A · EDUCATIONAL01BARN0102RUMEN0203TRANSITION0304UDDER0405HOOF05PhyloPic CC0 Bos taurus silhouette · pins follow left-flank dairy anatomy

Sheet index

8 sheets. One URL each.

Every sheet holds the system, the field notes, the numbers, the farm signs, and a five-question check.

Dairy nutrition

From the rumen to the ration: how cows turn forage and grain into milk, and how feeding mistakes show up in the tank.

  1. FIG. 01Inside the rumenOpen a dairy cow’s fermentation system and see how forage, microbes, and rumen pH turn feed into milk energy.Foundation · 12 min · 4 notes
  2. FIG. 02Starch load and SARAWatch the same rumen when starch arrives too fast: pH spends hours too low, milk fat slips, and the fiber mat thins.Applied · 11 min · 4 notes
  3. FIG. 03Physically effective fiberParticle size is what makes a high-energy diet still chew. Learn the sieves, the mat, and the ration the cow actually eats.Applied · 11 min · 3 notes

Cow health

Mastitis, heat stress, lameness, and transition disease — taught as systems you can see, not as glossary pages.

  1. FIG. 04Mastitis pathwaysAlmost every intramammary infection walks in through the teat canal. See contagious versus environmental paths before you blame the tank.Foundation · 12 min · 3 notes
  2. FIG. 05Heat stress loadHeat load is temperature plus humidity, not the office thermostat. Penn State: mild heat stress starts near THI 68 — shade, air, then water.Applied · 11 min · 3 notes
  3. FIG. 06Lameness and the hoofMost dairy lameness is a foot lesion on a standing surface. Merck: claw disorders dominate — wall, sole, and interdigital skin fail in different ways.Foundation · 12 min · 3 notes
  4. FIG. 07Transition and the uterusThe uterus after calving is an open, involuting organ on a cow already in an energy hole. Penn State: protect intake. UW Dairyland: give her space to eat and lie.Applied · 12 min · 5 notes

Husbandry and housing

Comfort, stocking, water, and daily cow flow. The environment that makes nutrition and health possible.

  1. FIG. 08Stocking and cow flowStocking density is stalls, bunk, and time — not a head count on a clipboard. UW Dairyland: overstocking steals lying and eating, and the fresh pen feels it first.Applied · 11 min · 3 notes

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