Food Shortage


It takes a lot of calories to feed livestock. More calories then you get out of them as meat.

The Feed Conversion Ratio is the ratio of the efficiency with which livestock convert animal feed into the desired output. 

An FCR of 5 means that for every 5kg of feed you give an animal you get 1kg of meat back.

FCR's of different livestock

  • Beef Cattle: 7.5
  • Dairy Cattle: 10
  • Pork: 4
  • Lamb: 6 - 40
  • Poultry: 2

Sources:

http://science.time.com/2013/12/16/the-triple-whopper-environmental-impact-of-global-meat-production/