Can animal agriculture survive to the 21st century?
D000383:Agriculture; D000820:Animal Diseases / Q000517:prevention & control; D000821:Animal Feed; D000818:Animals; D000829:Animals, Domestic; D002417:Cattle; D002645:Chickens; D002523:Edible Grain; D005523:Food Supply; D005544:Forecasting; D008460:Meat; D011153:Population; D012106:Research; D013552:Swine; D014481:United States