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.
My suggestion would be to try to obtain some good quality hay, feed about 20-30 lbs per cow per day (feed until 5-10% of feed per day is not consumed) and then supplement with a concentrate mix from a feed mill that contains corn and possibly a protein source such as distillers grains or soybean meal.s a general rule, cows can eat about 1.5 to 2% of their body weight in NDF and that is the way we balance the ration with a computer. Dairy cows usually eat about 100 lbs of feed a day, beef cows about 30-50% of this amount depending on the type of feed.