Can cow dung replace sand to cushion the cow bed?

It is feasible and there are practical cases. Of course, cow dung is not directly used to make bedding. There are several situations:

If the cattle farm is dry and clean, cow dung must be composted and dried for more than a week, disinfected and dehydrated;

If the manure is washed with water, and the manure exists in the form of manure water, it is necessary to carry out solid-liquid separation first, and then air-dry the separated residue compost for more than one week for disinfection and dehydration;

There is also the latest technology that all cow dung and wastewater are subjected to anaerobic fermentation to obtain biogas, and the fermented biogas slurry is subjected to solid-liquid separation, and then biogas residue is dried. The disadvantage is that the investment is higher than the above two, and the advantages are thorough sterilization and soft biogas residue.