Can straw and straw be exchanged for food?

Of course. Straw and straw can be used interchangeably, or they can be mixed to feed cattle, such as sweet potato straw, rape straw and sugarcane straw. Straw is the general term for the stems and leaves (spikes) of mature crops. Lignocellulose can not be utilized by pigs and chickens, but can be absorbed and utilized by ruminants, cattle, sheep and other domestic animals.