A 4-ounce (113-gram) serving of bison provides about 24 grams of protein when cooked, making it one of the more protein-dense red meats available. That’s roughly 2 grams more than the same serving of beef, packed into a leaner package with significantly less fat.
Protein Per Serving
The protein content of bison shifts depending on whether you’re measuring raw or cooked meat. A raw 4-ounce portion contains about 17 grams of protein. Once cooked, water evaporates and the meat concentrates, bringing that number up to around 24 grams per serving. This is a common source of confusion when comparing nutrition labels, since some list raw values and others list cooked values. If you’re tracking your intake, weigh your bison before cooking and use the raw figure (17 grams per 4 ounces), or weigh it after and use the cooked figure.
Bison is a complete protein, meaning it contains all 20 amino acids your body needs, including the nine essential ones you can only get from food. This puts it on par with other animal proteins like chicken, beef, and eggs for supporting muscle repair and overall protein needs.
How Bison Compares to Beef
The protein difference between bison and beef is modest: 24 grams versus 22 grams per cooked 4-ounce serving. Where bison really stands apart is fat content. That same serving of bison has about 8 grams of total fat and 3 grams of saturated fat, compared to 14 grams of total fat and 6 grams of saturated fat in beef. Bison delivers nearly 25% fewer calories than beef overall.
If your primary goal is hitting a protein target while keeping calories low, bison gives you a slightly better protein-to-calorie ratio. For someone eating multiple servings of red meat per week, that calorie and fat difference adds up. But if protein quantity alone is what matters to you, the gap between bison and beef is small enough that either works well.
Grass-Fed vs. Grain-Finished Bison
The protein content of bison stays relatively consistent regardless of how the animal was raised, but the fat composition changes meaningfully. Grass-finished bison has an omega-6 to omega-3 ratio of roughly 4:1, which falls within the recommended range of 4:1 to 10:1. Grain-finished bison, by contrast, has a ratio closer to 21:1, with omega-3 fatty acids dropping from about 3.4% of total fat down to just 0.5%. If you’re choosing bison partly for its fat profile, grass-fed is the better option. The protein benefit is the same either way.
Beyond Protein: What Else Bison Delivers
Bison is notably rich in iron, zinc, and vitamin B12, three nutrients that work alongside protein in your body. Iron carries oxygen to your muscles. B12 supports red blood cell production and nerve function. Zinc plays a role in immune health and wound healing. These nutrients are often harder to get in adequate amounts from poultry or plant-based proteins, which gives bison an edge as a nutrient-dense choice for people who eat red meat in moderation.
Cooking Tips to Preserve Quality
Because bison is so lean, it cooks faster than beef and dries out more easily if overdone. Ground bison should reach an internal temperature of 160°F, with clear (not red) juices. Steaks and roasts are best at 145°F for medium rare or 160°F for medium. Setting your oven to around 275°F, lower than you’d typically use for beef, helps prevent the meat from toughening up.
Overcooking bison doesn’t destroy its protein, but it does make the texture chewy and less appealing, which means you’re less likely to enjoy eating it regularly. A meat thermometer is the simplest way to get it right. If you’re cooking ground bison in a skillet, treat it like you would extra-lean ground beef: use a bit of oil and avoid pressing the patties flat, which squeezes out moisture.