[Wheek Weak]

Ditto everything pigsforlife stated.

Alfalfa is important, along with lots of fresh water. Pregnant sows drink a lot of water. Ruby was going through an 8-ounce bottle in 8 hours. We had to buy her a larger bottle to make sure she didn't run out!

Also (although this has nothing to do with nutrition), be careful handling her as her belly gets bigger. You will need to weigh her daily to make sure she's gaining weight. Use a small cardboard box (or something similar) to lift her out to weigh her, clean her cage, etc.