The option to choose feed was mainly gramineous seed, such as corn, wheat, rice etc and processed products, such as rice bran, wheat bran, and so on.

• 生喂饲料的选择可选择生喂的饲料主要是禾本科籽实，如玉米、小麦、稻谷等及其加工副产品，如稻糠、麦麸等。