I remember posting on this subject, but it's not here....was it because I alluded to eunuchs? Or did it just go off into the ozone, instead of to the thread???
In any case--I have heard this 'theory' for MANY years. I believe in it enough that if I have a horse that I feel might be"close" in size, I would(and have)wait(ed) until it was at least a full two YO to geld. Otherwise, I wouldn't be too concerned about timing, one way or the other. Have never had any horse,large or small, that was left without a spark due to gelding....FWIW.
In any case--I have heard this 'theory' for MANY years. I believe in it enough that if I have a horse that I feel might be"close" in size, I would(and have)wait(ed) until it was at least a full two YO to geld. Otherwise, I wouldn't be too concerned about timing, one way or the other. Have never had any horse,large or small, that was left without a spark due to gelding....FWIW.