My Cross-Breed pig is 3 years old and she quit eating for 12 days, her eyes closed up, she wouldn't nurse and her piglets were still born. Then about 1 week after we had her put down. I was woundering if you could tell me what this would be from

Optional Information:
Age: 3; Female; Breed: Pig, Cross-Breed

Already Tried:
We gave her 20cc Naxcel for 2 days