AtlasRumenFIG. 02Applied11 min
Starch load & SARA
Watch the same rumen when starch arrives too fast: pH spends hours too low, milk fat slips, and the fiber mat thins.
ShareStarch load & SARA
Numbers
| Measure | Value | Spread · alarm | Why it matters |
|---|---|---|---|
| Normal post-meal dipPenn State Extension | Brief | Then recovery toward 6+ | A dip after eating is expected. Failure to recover — hours spent low — is the SARA pattern. Without a bolus, infer recovery from chewing and manure later in the day. |
Field notes on this focus
Quick check
Q 01 / 01
What makes SARA different from a normal meal?
Numbers
| Measure | Value | Spread · alarm | Why it matters |
|---|---|---|---|
| What this page will not give youNational Academies (NASEM, 2021) | No ration. No drug. | NASEM and your nutritionist own inclusion rates. This school owns the system: rate of fermentation, buffer, and farm signs. |
Sources
- From Feed to Milk: Understanding Rumen Function — Penn State Extension
- Diseases of the Ruminant Forestomach — Merck Veterinary Manual
- Ruminant Digestive System — Merck Veterinary Manual
- Nutrient Requirements of Dairy Cattle, 8th revised edition — National Academies (NASEM, 2021)
Plate credit
Stomach figure adapted from the public-domain 1905 plate Interior of a cow (The Household Physician; Wikimedia Commons) and standard ruminant-stomach teaching figures. Educational only.
Not a veterinary diagnosis, prescription, or ration formula.