State the disadvantage of inbreeding among cattle

State the disadvantage of inbreeding among cattle. How it can be overcome?

Arts Inbreeding depression usually reduces fertility and even productivity. It sets in due to continued inbreeding especially close inbreeding.
When inbreeding depression takes place or happens, selected animals of the breeding population should be mated with the unrelated superior animals of the same breed. This will help to restore the fertility and yield.