Due to rising costs for bedding materials, the amount of bedding is often reduced in praxis. A study inspected the effects and preference behaviour of cows.
How does the amount of bedding affect lying behaviour?
How do deep litter cubicles with sand work in comparison to an elevated cubicle with a rubber cover?
You can find answers to these questions directly here: the new KRAIBURG Practical Experience about "lying behaviour: comparing sand and rubber"