It depends on her breeding. Some 10 month old heifers can weigh in at around 1000 lbs, but others will be as small as 500 lbs. Chianinas, Charolais, and other big Continental beef breeds weigh around the former, and Jerseys, Dexters and other small breeds weigh around the latter. Those breeds that are in the middle of the road, like Angus, Shorthorn and Hereford, would have 10-month old heifers weighing in at around 700 to 800 lbs.
A Hereford cow weighs around 1100 to 1400 pounds, depending on genetics. Bulls, or the adult intact males, will weigh between 1800 to 2200 pounds or more.
Hereford cattle today are actually at least half the size they were in the 18th and early 19th centuries when they were primarily used for draught purposes and some milking. But then some breeders came along and wanted to vastly improve the Hereford breed. Thus, size was sacrificed for refinement and earlier maturity, and so over many decades of breeding and with the co-operation of several breeders, Herefords in the late 1800s became more like the Herefords of today. Gone were the days when the Grand Champion Prize bull would the biggest, heaviest bull on the lot. Where draft purpose Herefords were no longer needed, quality based on conformation took over, and has been at the forefront for breeding animals today.
That all depends on her breed and how old she is.
A Hereford cow typically weighs around 1,200 pounds, while a bull will weigh near 1,800 pounds. Hereford cattle in the 1700's and early 1800's could weigh more than twice as much.
Depends on the breed.
Around 700 lbs.
3KG
She should weigh about 25 lbs.
There is no such thing as a "bull cow." Either you are talking about a bull, or a "cow" which would be a weanling heifer. As such this all depends on the breed of that animal.
22lbs
7 pounds
depends on breed
16 pounds.
5-6 pounds.
1 tonne
it depends on how big it was born
5-6 pounds.