Grass-Fed vs Grain-Fed Beef
Compare grass-fed and grain-fed beef strip steak side by side for calories, fat composition, omega-3/omega-6 ratio, CLA, vitamins, and minerals per serving.
| Nutrient | Grass-Fed | Grain-Fed | Winner |
|---|---|---|---|
| Calories | 198 kcal | 224.0 kcal | Grass-Fed |
| Protein | 19.4g | 20.3g | Grain-Fed |
| Total Fat | 12.7g | 15.4g | Grass-Fed |
| Saturated Fat | 5.3g | 6.3g | Grass-Fed |
| Omega-3 | 0.08g | 0.03g | Grass-Fed |
| Omega-6 | 0.27g | 0.45g | Grass-Fed |
| CLA | 0.04g | 0.02g | Grass-Fed |
| Iron | 2.1mg | 1.9mg | Grass-Fed |
| Zinc | 4.5mg | 4.2mg | Grass-Fed |
| Vitamin B12 | 2µg | 2µg | Tie |
| Vitamin E | 0.45mg | 0.16mg | Grass-Fed |
| Beta-Carotene | 0.04mg | 0.009mg | Grass-Fed |
Grass-fed advantages
- • Higher omega-3 to omega-6 ratio
- • More CLA (conjugated linoleic acid)
- • More vitamin E and beta-carotene
- • Generally leaner with fewer calories
Grain-fed advantages
- • More marbling for richer flavor
- • Lower price point at most stores
- • More widely available year-round
- • More consistent flavor and texture
Frequently asked questions
How does the nutrient profile of grass-fed vs grain-fed beef differ?
Grass-fed beef tends to be leaner, with higher levels of omega-3 fatty acids, CLA (conjugated linoleic acid), vitamin E, and beta-carotene. Grain-fed beef typically has more total fat and marbling. Both provide complete protein, iron, and B12 in similar amounts.
Why is grass-fed beef more expensive?
Grass-fed cattle take longer to reach market weight (24-30 months vs 15-18 months for grain-finished). They also require more land per animal, which increases production costs.
Does grass-fed beef taste different?
Yes. Grass-fed beef tends to have a more mineral, slightly gamey flavor compared to the buttery, mild taste of grain-fed. The difference is most noticeable in fattier cuts.
What does "grain-finished" mean?
Most cattle eat grass for the first 12-14 months of life. "Grain-finished" means they are switched to a grain-based diet (corn, soy) for the final months to increase marbling and weight gain. "Grass-fed" (or "grass-finished") cattle eat grass their entire lives.
Data sources
Grass-fed values: USDA FDC 169426 — grass-fed strip steak, raw. Grain-fed values: USDA FDC 174053 — conventional strip steak, raw. CLA and omega-3 values are general estimates based on published research averages; exact values vary by farm and season.