CattleNutri app icon CattleNutri

NASEM dairy & beef ration builder

Formulate, balance, and least-cost optimize cattle diets with published NASEM science — built for nutritionists and producers, on the farm or offline.

See what’s inside Get CattleNutri

Published science

Two NASEM engines. One workflow.

Balances come from the models — interpretive scores are labeled CattleNutri heuristics so you always know what is model output versus guidance.

Dairy — NASEM 2021

Predicted milk, DMI, milk fat, ME / MP / RDP balances, amino acids, minerals, energy partition, and environmental impact — computed with NASEM Dairy Cattle, 8th Revised Edition (2021).

Lactating · Dry · Heifer · Calf Holstein · Jersey

Beef — NASEM 2016 ELS

Growing, finishing, and beef-cow classes with NEm / NEg / MP / Ca / P style balances from NASEM Beef Cattle, 8th Revised Edition (2016), empirical (ELS).

Growing · Finishing Beef cow classes

Diet builder

Build diets ingredient by ingredient

Search the bundled NASEM feed library, set amounts, dial animal parameters, and calculate. Load verified demo scenarios when you need a fast start.

  • Dairy & beef toggleSpecies-aware inputs and equation options in one builder.
  • ~284 NASEM feedsForages, concentrates, minerals, by-products — plus custom feeds.
  • Demo scenariosEarly lactation Holstein, dry cow, finishing steer, and more.
Demo diet scenarios in CattleNutri

Formulation results

See balances with citations

KPIs, nutritional balances, limiting factors, minerals, amino acids, economics, and PDF export — with clear NASEM citations on every formulation.

  • Nutritionist dashboardAt-a-glance adequacy and alerts after you formulate.
  • Deep analysisEnergy partition, environment, IOFC, feeding suggestions.
  • Shareable PDFsProfessional reports ready for the barn or the client.
Nutritionist dashboard in CattleNutri

Least-cost optimizer

Meet targets at the lowest cost

Linear programming with energy, CP, NDF, and DMI bounds. Prefills from NASEM requirements when a calculation exists — then price every ingredient.

  • NASEM-aware targetsPull nutrient goals straight from your last formulation.
  • Min / max constraintsKeep inclusion rates realistic for the ration.
  • Cost clarityOptimize the mix before you mix the feed.
Least-cost optimizer screen

Feeds & lab

Paste lab text. Make a custom feed.

Farm lab workflows without leaving the field. Paste report text, review extracted nutrients on device, and add the feed to your library.

  • On-device parsingLab nutrients stay on your phone in this release.
  • Searchable libraryBrowse categories and your own custom feeds.
  • Animal groupsSave parameter presets for herds you revisit.
Lab report paste workflow

How it works

From ingredients to insight

Choose species

Dairy or beef — inputs and engines adapt to the animal class.

Build the diet

Pick feeds, set kg amounts, enter animal and environment data.

Review balances

NASEM citations, KPIs, drill-downs, and feeding suggestions.

Optimize & share

Least-cost the mix, save history, export a PDF when you need it.

Ration science in your pocket

CattleNutri helps nutritionists and producers formulate dairy and beef diets with published NASEM engines — offline-first, with optional sync.

Contact support Support center

Available for iOS & Android · Offline-first · Optional cloud sync