She's already the right age to be pregnant, since a cow is a mature female that has had one or two calves already. If she's open and has been open at least 45 to 60 days after having her last calf and is showing signs of normal estrus, she can be bred to be pregnant again.
Peak breeding ability would be around 2 to 5 years of age.
Holstein heifers can be bred at around 15 months of age. Bulls can be used for breeding by the time they reach around 12 months of age.
Cows can be bred at any age (since they are mature female bovines that have had at least 2 calves) so long as they are not already pregnant. Bulls, on the other hand, can begin to be used for breed by the time they are around 12 months of age.
That depends on the breed. Usually heifers should be bred when they are between 15 and 18 months of age, and bulls can be used for breeding when they are around 10 to 14 months of age.
Reindeer bulls typically begin breeding around the 1 1/2 year old mark.
Often a bull should stop breeding either if he's too old and not fertile enough any more to be used, or if he's become too aggressive and dominant with his handlers to be considered a keeper anymore. There really is no defined age when a bull should stop breeding.
On average, Angus bulls can weigh between 1800-2400 pounds, while Angus heifers typically weigh between 1000-1600 pounds. The exact weight can vary based on factors like age, diet, and genetics.
Yes, if he's already reached puberty.
The average weight of a purebred Angus bull, at maturity, is ~2500 pounds. This depends on his diet, genes, and general health. There are a lot of mature Angus bulls that can weigh well over 2500 lbs, and there are mature Angus bulls that will only weigh around 2000 lbs.
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.
Bulls can become oxen when they get castrated and are trained to pull carts, wagons, plows, etc. However most breeding bulls stay bulls, and oxen are trained at a young age, when they are castrated when they are on their mommas and not yet trained as oxen.
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.