Animations are not playing when prefebs are loaded using asset bundle in Unity 5.3

I have made an asset bundle containing some prefebs which have animator controller. Animations runs nicely when they were normal prefebs in scene but when I create an assetbundle of them and try to instantiate, they instanciated successfully but animations are not playing.

Thanks in advance for your help!

For me the animations are playing. You may want to look at your scripts and animator setup.
However there are bugs related to animator that should be fixed in Unity 5.4.
See this: Unity Issue Tracker - Animation Clip Length value is incorrect if animator is loaded from Asset Bundle
Hope it is helping.