If that land were used to raise chickens, it would produce 50 grams of protein in the form of poultry. If it were devoted to dairy cows, it would provide 25 grams of protein in the form of milk products. If that land became a home for pigs, they would provide 10 grams of protein in the form of pork. And if you put cattle there, you'd get just 4 grams of protein in the form of beef.
Source: Los Angeles Times March 26, 2018 21:56 UTC