When a 1 day old bottle calf doesn't eat it's usually because he is scouring or is going to scour. Dun's advice on the Resflor is a good one, we need some systemic antibiotics. Your calves die from dehydration, the overwhelming cause of death in bottle calves less than 2 weeks old is dehydration. I'll make a list of things that will help.
1. the recommendations on a bag of milk are for a 100 lb Holstein calf, adjust accordingly. Make sure you use a good 20/20 all milk protein replacer .
2. Feed milk 12 hrs apart.
3. Feed 2 quarts electrolyte formula between meals. We have to shove fluids in the front end faster than it's coming out the back.
4. We can get fluids in the calf with an IV line. You don't have to hit a vein, just put it under the skin in the neck a product called Lactated Ringers Solution, you'll have to get it from a vet.
The solutions for saving calves with scours are simple ones, so simple in fact that most people can't believe they will work, therefore they don't do them.
Larry