Why Do Birds Have White And Dark Meat? (And Do We?)

The video explains the differences between slow twitch and fast twitch muscle fibers in birds, highlighting their roles in endurance and quick bursts of activity. Slow twitch fibers, rich in myoglobin and mitochondria, are suited for long-distance flying, while fast twitch fibers rely on glycogen for short, intense actions. The video also compares muscle types across animals, noting that mammals have a mix of both fiber types, resulting in red meat. Fish generally have white meat due to less muscle use, except for species like tuna and salmon, which have darker meat due to constant swimming.

Why do long distance flying birds have dark meat?

How do the muscle fiber compositions in mammals differ from those in birds?