Which makes sense if you work it out - unless a country would only eat the largest animals (cows) you find that people eat more than one animal a year, and so there must be more than that. (Cow, estimated 500,000 calories, 2,500 per day recommended, cow lasts 200 days - even then if you were to eat mainly cow you'd need more than eaters because they take more than 200 days to mature; but nobody eats pure cow.)
I guess in theory you could eat one chicken per 8 weeks and barely keep it balanced, as you can grow a meat chicken in that time.
