Materials and Methods: The study material consisted of 92 head Holstein breed dairy cows of different ages and milk and video recordings of these cows for 365 days. In the study, 3 different types of bedding materials were used. These are grouped as type 1 (mattress), type 2 (mat) and type 3 (rubber mat). There is a minimum of 30 cows in each group.

Results: As a result of the research; It was found that milk yield was higher in mattress bed material of cows raised in free stall barns, while lying time was longer in mat bedding material.

Conclusion: It uses many different products (straw, straw, concrete, sand, mat, matress, etc.) as bedding material in animal husbandry enterprises. Animals prefer softer, dry and comfortable areas to rest and lie down. Increasing rest and lying times affects milk yield positively and increases yield. Therefore, it is important in terms of productivity that enterprises provide animals with a comfortable and comfortable space. Considering all these, it is recommended to use mattress beds in enterprises.