Breeders wait until the female is part the first heat but waiting 3 years of age is recomended.
A bull is 51 when he stops breeding in bull years
Generally, a bull should be at least 12-15 months old before breeding to a cow, as younger bulls may not have reached full maturity and could struggle with mating. Breeding a 6 month old bull to a cow could result in unsuccessful mating, injury to the animals, or health issues for the offspring. It is advisable to wait until the bull is older and has reached breeding maturity before attempting mating.
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.
Just like with cows, a bull is culled based on conformation, temperament, fertility, health issues and breeding ability. A bull can be too old to breed when he's 5 yrs old or at least 15 years of age.
Around 6 months old!
A bull can typically be used for breeding purposes until it is around 6 to 7 years old, although some can remain fertile into their early teens. Factors such as health, genetics, and management practices can influence a bull's breeding longevity. Regular health checks and monitoring of fertility are important to ensure effective breeding. After reaching a certain age or if fertility declines, it may be time to retire the bull from breeding duties.
Your cockatiels should be at least a year old before you start breeding them to prevent ill offspring.
3 years of age to start breeding
They breed when they are 3 years old this is for male and female harris hawks.
about one year old
this year in 2012 he will be 23
A young bull refers to a male bovine that is under four years old. At this age, bulls are still developing physically and sexually, and they are often kept separate from mature bulls to prevent aggressive behavior. Young bulls are commonly raised for beef production or breeding purposes.