Young cattle are veal.
Yes. It's not uncommon to background or stocker heifers for beef like what is done for beef steers.
A yearling bull, which is best used on heifers, can breed from 10 to 20 heifers in a breeding season.
A male intact bovine that is used for breeding cows and heifers.
Bulls are best used for breeding cows and heifers. They are also used in rodeos and bull fighting as well as for beef, but their primary use and goal in life is to breed as many cows and heifers as possible and produce offspring.
Since yearling bulls are the best to use on heifers, and one yearling bull will breed from 15 to 20 heifers, you should have 4 bulls for your herd of 70 heifers.
The income that is not used for consumption is called disposable income
Weanling steers and heifers of pretty well any breed can be used for team penning.
Bulls can reach puberty by the time they are 8 months of age, but most are put in with the breeding herd by the time they are 12 months of age. Heifers reach puberty by the time they are 10 to 12 months of age, but most heifers are not bred until they are 15 months old. Of course the breed of the bulls and heifers depends on when they reach puberty and/or when they should be used for producing offspring.
When the heifers are at least 14 months old, you can put yearling bulls (15-20 heifers per bull for yearlings) in with them. Don't put your big mature bulls in with your heifers as this could cause problems later on.
Usually it is better to butcher a beef steer but heifers are okay.
Heifers.
A yearling. Bulls are yearling bulls, heifers yearling heifers (or just heifers). Steers are often just called steers, sometimes yearling steers if you want to be more precise.