Black Lines Along UV Mapped Model

I am new to blender and am trying to model an object and export it to unity.

However I am having a problem. Black line are forming along several edges of the model when viewed from a distance.

Some screenshots

Close Up

From A Distance

In Unity

Texture

• It might help to post the texture with the UV islands overlaid to see how it's unwrapped. – Todd McIntosh Jun 19 '15 at 19:21
• Looks like you need a larger margin around the outside of the UVs – gandalf3 Jun 19 '15 at 19:26

Either remap your UVs with smart UV project and set island margin to an appropriate value (Experiment, 0.02 works for me), or manually increase the size of the margin around each island by a few pixels. You can easily do this by hand with a photo-editing tool.