For instance: White broilers, the best-selling type of chicken these days, produce one kilo of meat for every two kilos of feed they eat. And they're ready for market in just 50 days, compared with 100 days for native chickens.
現居世界肉雞銷售量排行第一的白肉雞，平均每吃兩公斤飼料就能長一公斤肉；成長速率也快，平均五十天就可以上市，不像土雞需要一百天才能上市。