Alot of factors play a role like genetics, breed, growthability, environmental factors, milking ability of the dam, grazing conditions, etc.
Typically I've found that the vast majority of my calves start cycling around 9-11 months, but occasionally you'll see some cycle at around 6-7 months, they are usually the growthier heifers out of very milky dams. Its more a size thing than an age thing, but there are certainly a cut off age at the young side of the equation.
Typically I've found that the vast majority of my calves start cycling around 9-11 months, but occasionally you'll see some cycle at around 6-7 months, they are usually the growthier heifers out of very milky dams. Its more a size thing than an age thing, but there are certainly a cut off age at the young side of the equation.