The invention discloses fattening cattle feed and a preparation method thereof. The fattening cattle feed consists of whole plants of
feed type green corns, whole plants of fresh Chinese herbal medicines, wheat
bran,
earthworm powder,
earthworm feces, table salt, baking soda, a
straw decomposing and fermenting agent and a nano organic chelating
trace element. The preparation method comprises the following steps: harvesting the whole plants of 90 percent of mature
feed type corns planted in a farmland together with corn cobs and straws, and kneading into a filament shape by using a
straw filament kneading
machine or
cutting into 2 to 3 cm long; when the Chinese herbal medicines planted in the farmland are just mature, harvesting whole plants together with stems and leaves, and kneading into a filament shape by using the
straw filament kneading
machine or
cutting into 2 to 3 cm long; putting all the components into a dry and wet feed stirring
machine, adding the straw decomposing and fermenting agent after expanding propagation, regulating the total
moisture into 40-60 percent, uniformly stirring, packing and fermenting. The fattening cattle feed and the preparation method thereof disclosed by the invention have the benefits that the
utilization rate of the fattening cattle feed and the
medicine effect of the Chinese herbal medicines can be greatly improved, the
growth speed of fattening cattle is accelerated, the period of the fattening cattle is shortened, and the fattening cattle do not get sick in the growth process.