Pounds for pound
Different sources of animal protein in our diet place different demands on natural resources. one measure of this is the “feed conversion ratio”: an estimate of the feed required to gain one pound of body mass. By this measure, farming salmon is about seven times more efficient than raising beef.
<*출처: National Geographic, June 2014>
☞기사 전문 Click! http://ngm-beta.nationalgeographic.com/2014/06/articles/how-to-farm-a-better-fish/ (How to farm a better fish)
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