Rigidbody on UV animation?S

Hi,I know we need to add rigidbody if we are moving objects.In Unity 5 the performance of moving non rigid body objects has been increased too.

Though I have doubt over ,Do I need to add rigidbody if I am animating only UVs without moving the object?

No, you do not need to add a rigidbody if you are just animating UVs because your object is static since it it not moving.