With the soaring prices of raw materials needed for manufacturing animal feeds, such as petrochemical products and corn, the cost of feed has become a serious burden to hog farmers, who have long relied upon imported feed. As a result, kitchen scraps, which can be used to replace pig feed, have suddenly turned from garbage into gold.
由於製造飼料所需的石化原料、玉米等物資飆漲，養豬飼料的價格也水漲船高，使得向來依賴進口飼料的養豬戶大喊吃不消，可替代飼料的「廚餘」遂一時之間從垃圾變黃金。