Maintenance requirements are 2.5% of a cow's body weight in dry matter ration per day.
That depends on the type of cow. A dairy cow is able to feed four at one time, whereas a beef cow will be only able to feed one calf at a time--two if she's a really good producer or has a significant amount of dairy influence in her.
A calf (or baby cow) is the reason that the beef and dairy industries have not crashed. They are the future beef and milk producers, so in short answer they will feed you.
None. Cows eat grass, hay, silage and grain, not any sort of animal meat like "beef nut."
the average beef cow is 1,333lbs
Depending on the quality of the grass. It may if the quality is good. A new mother cow should have extra feed for the milk in the form of grain.
horses do not have beef. beef is on a cow.
Only if she's a dairy cow, like a Holstein or Jersey or some sort of dairy cross, like Holsetin-Jersey cross or Swiss-Jersey or Swiss-Holstein cross. Those type of cows can nurse up to four calves at once, with one calf on each tit. A beef cow or beef-dairy cross cow will not be able to feed three calves at once, only one; dairy-beef cross cows may be able to get away with feeding two at the most; occasionally three if she's a high-producing cow for a beef-dairy cross.
The largest single cost in a beef cow operation is most likely always to be feed. However, if you plan to have a special operation where practices such as in vitro are practiced then you are going to have a higher cost for the reproductive practices.
cow
More information such as type of feed (hay, grain, silage), type of cow (dairy or beef) and period of pregnancy (first, mid or last gestation) is needed before this question can be answered.
A cow is already at maturity because cows, whether they're beef or dairy, are female bovines that have had at least two calves and are at least 4 years of age, which is the age of maturity for a cow. So the question is pretty much pointless. But if you were to ask about a beef heifer or steer or calf that is such-and-such months of age, that's a different story.