Whether putting food in the refrigerator, the freezer, or the cupboard, you have plenty of opportunities to prevent foodborne illnesses. One of the basics of food safety is cooking food to its proper temperature.
I personaly always figured around 25lbs of hay per day for a average size cow when i was putting up hay. Alot of that of course they can get if pasture is available/accessable. Multiply that by your number of cows x average days you actually have to feed.
For example, if a grain cost $185/ton ($0.20/kg) and 25 pounds (11.4 kg) were fed per day, grain cost per cow per day would be $2.31. Feed Cost per Cow per Day. This is the cost of all feeds (grain + forage) fed to the cow each day.