Parturition or calving, just like with any other cow.
A cow
cow
A cow shouldn't be bleeding after giving birth. She may have a torn uterus, so you'd better get the vet out ASAP.
No, cows must be delivered of a calf in order to lactate, or produce milk. Most large dairy farms will remove the calf from the cow right after birth and give it milk replacer, and this will allow the cow to be milked to maximum.
Yes.
Immediately
A few days after she's given birth to a calf.
Milk is the most important product that dairy cows have to offer, and it has become sort of a necessity for dairy farmers to being breeding heifers as soon as they are able to. A cow cannot produce milk until after calving or parturition (or giving birth). So at around two years of age, the heifers are bred to give birth and officially become dairy cows that can produce milk. Dairy cows will reach its milk production peak at around 40 to 60 days after giving birth. After that, production will steadily decrease. Eventually the milking will cease when the cow is dried off after about 305 days. The dairy cow can calve again a year after her first birth. For high production cows, though, it is viewed that 13 or 14 month cycles is appropriate because high production cows are more difficult to breed. I got more information like this from http://www.cowbreeding.info
a cow
No.
The scientific name for a Holstein dairy cow would be Bos primigenius taurus.
It should only be a matter of a couple hours.