I was going to suggest giving him just a little bit of ace promazine but since you are reluctant to use any drugs forget that, I think the place you are breeding him is the problem. Is there a way to trailer your boy and a really obliging experienced female to a neutral place? Or do you have a place on your farm that is away from the other male? I understand from your email that your males are next to each other but are not housed together? I think this is the problem. They trade silent (maybe not so silent insults) across the fence and he is itching to fight that male and can't, then, when you put a female in with him fighting is all he can think of particularly when the other male is right there watching. I think you are right once he breeds successfully once the problem will be over. Although there are males that would rather patrol a fence and protect territory than breed an open female standing patiently in their paddock. Ideally I would take him away from that male and put him somewhere away from his paddock to breed. The other thing that might clarify things is to let the two males live together- if you are willing to do that. Then he wouldn't have all that pent up fighting frustration when he finally gets around another llama. Hope that helps.
