Maya Animation Smoothness Not Carrying Over to Unity

I tried importing Animation from Maya to Unity, took some help from forum to understand baking and stuff. Now the animation is working properly.
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PROBLEM
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First of all, the unity is not taking Maya's smooth mesh while importing. We tried setting Import Normals (in Model) to None. Not much of a difference.

So due to this our left leg of the character becomes transparent when we move it across the viewport of unity.
like this - https://dl.dropboxusercontent.com/u/21580515/Unity/transparant.avi

The legs should actually look this much smooth (example from Maya) - https://dl.dropboxusercontent.com/u/21580515/Unity/Leg-Maya.PNG

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Please let me know if you know what we can do to retain Maya's smoothness in this case.