Thanks everyone. I don't feel feed quantity or quality is the problem but I do feel water is. I am lacking in funds so have been watering out of the ice and works well for my cows but when I cut holes for my calves the big ones drink and the little ones leave. I started cutting twice a day and the big ones drink twice a day. That's the reason for building pens . Separate the little ones out . I have read lots of studies about how they can eat snow but after watching this for about 10 years I see it doesn't work for me. On the warm days when I can feed close to the water and they drink all day I can see  improvements. Going to set up solar tire troughs and wind breaks close to water to feed. Thanks for taking the time