Thanks for the replies.
I think I may have confused Angle of Attack and climb pitch. I thought they were the same thing. It appears not.
So just so I have this clear, the corrective action you would take with a failure at rotation is: rudder input to keep the aircraft flying straight and lowering the nose to keep your airspeed from decaying and ensure you accelerate to V2?
This is probably a daft question, but I wonder how you establish by how many degrees to lower the nose to maintain the airspeed and accelerate to V2? Is it a question of feel, experience on, knowledge of, and simulator training for your particular aircraft type, or do the aircraft's systems (e.g. Flight Director) provide guidance?