if u don't keep bulls, then the day they are born. Easiest on the calf and you, easier on cows also. Some studies have shown bull calves to shorten the time a female stays in the herd, take them for what u think they are worth. Also cut and don't band them when they are born is the rule around here. jmo
The younger the better we run 2000 head of stockers and when we buy them off the market 85% are not cut it takes a toll on them to cut them at 400 lbs I cut my personal calves when I find them after they are born that way they never miss a lick. Sooner the Better
The earlier the better, but I would not recommend cutting the steers on the day they are born. The testicles have not yet descended and you have essentially created a short scrotum bull. I would wait until a couple of weeks and then cut them. Flies will only survive in dead tissue and I have not had an issue. I have cut calves as late as 205 days and they get along ok, but its harder on the older calves then the younger calves. I prefer to band them young rather than wait and cut them, but I have done both. With older calves you will have no choice but to use a knife.
three years ago I banded a 16 month old bull after he ran with 10 cows. when he was finished he sold the same as the rest of the fat cattle that day. I don't know what % of the time it would work out that way.
The earlier the better, but I would not recommend cutting the steers on the day they are born. The testicles have not yet descended and you have essentially created a short scrotum bull.
when u cut them older they grow better i've heard we cut wen we wean , mid sept. , most born march to april. we cut the show steers with every one else