《农桑辑要·孳畜·牛水牛附》
牛一具是三头，每日上半天和下半天，大约要用饲草三束，豆子八升。
牛一具三只，每日前后饷，约饲草三束，豆料八升。
One large steer requires three bundles of hay and eight sheng of beans per day, in the form of two meals, one in the morning and one in the afternoon.