I finally purchased my first buck! No more trailering the girls for their dates. He is 6 months old and is a healthy Nubian. My girls are 2 Nubians and 1 lamancha. Ages are 6 m, 6m, and 2 yrs. they are not housed together. I have noticed my lamancha has been in heat, however, my buck acts like he is a wether. No interest whatsoever. Is this normal?