NY-Grass: I would definetly wean the calves. I would worm everything, the cows are keeping the calves looking good at their own expense and the calves will go downhill with their worm load when you take away their milk source.
The hay that you are feeding them looks like grass hay and it would be fine for the cows under normal conditions, but you don't have that right now. You have an emergency on your hands if you want to do things right.
It will not be good enough hay for the calves once they are weaned if you expect them to grow. I would guess that you are trying to produce organic grassfed beef. That is fine if you know what you are doing and have the setup for it. You are doing it on a shoestring, which is tough. I think you have some very nice cows there, what I could see of them and their udders looked good. As was noted by another poster, you are not organic. Organic certification takes 3 years and under these circumstances even if you were organic, you are allowed, I believe to use ivomec in an emergency. I know that SGF tells you not to use wormers or the world will end, but they say a lot of things that if you stick with this long enough, you will find out aren't exactly true.
I read it for entertainment more than anything
, although as I said, earlier, I find Joel Salatin pretty interesting.
So go the natural route, worm them! and feed them. Here is what I would do If I was you:
1. Buy ivomec, it comes Generic pour it on while they are eating, do all of them, including the calves.
2. Wean the calves yesterday. You really need to have good facilities before you start with cattle but try the electric fence, if it is not a good fence, the calves will be back with the cows. Can you shut them in a barn?
3. Feed the cows some corn, I see a cornfield next door in that one picture, could you put the cows out on that and feed them some hay along with 5 or 6 lbs of corn a day? They will pick up ears the combine missed if the snow isn't too deep and eat leaves and husks. My cows are all out on stalks right now.
4. Feed the calves your grass hay for a few days while weaning them, then start them out slow on some feed. 2lbs a day corn/oats with 2lbs 34% protein pellets or soybean meal and frI'eechoice hay and cut the bulls. Then you have to decide what you are going to do with them. Vaccinate them for IBR/BVD and the clostridials, repeat vaccination in 3 weeks. If you are going strictly grassfed, you may discontinue the grain if you can provide them with higher quality hay, (Or if you have a high quality hay available, forget the grain for the calves) if not, then increase the grain by 2 lbs a week (leaving the Pellets the same) after the 2nd round of shots. You can drop the oats out after a while.
5. Keep the cows on the grain while you are breeding them. 1 five gallon bucket of corn a day with freechoice hay should do alright for them to gain some weight, but once you let them get down like that it takes a while to get it back. Watch that your meekest cow gets to eat too.
6. If you are going to keep them, get a bull. Rent one, borrow one, but get those cows bred. You can sell them as fall calvers and buy what you want in the spring. Or keep them and calve them out, but you need to have good facilities and the ability to feed them well if you are going to keep them through the winter months nursing calves. On the other hand it gives you more space to grassfeed your butcher calves all summer if the cows aren't nursing then.
I apologize if I trampled your feelings earlier, but I have been raising cattle on my own for the past 28 years and have learned a thing or two along the way(before that I followed my dad and Grandpa around and learned from them). I too am intrigued by the grassfed thing, but know that it isn't as easy to do as some people say. PM me if I can be of further assistance or any assistance.