We have six:
Querk - 8 red
Ivy - 6 yrs tri
Blondie - 5 yrs red
Bella - 4 yrs red
Luna - 2 yrs red
Ariel - six months brindle
And yes, I do think some intimacy is lost in the relationship with each dog when you have so many. But, I think what they lack in their relationships with humans, they gain in their relationships with the other dogs. I also think that less training occurs by the human and more by the other dogs when you have so many. I never have to worry about entertaining them…and they are usually too busy with each other to destroy stuff....though sometimes they still do.
I try to make sure that each dog gets some personal time though. Often it is a long walk in the park, or a weekend at a dog show, or a special training class...or sometimes just some one on one snuggle time.
At some point, when showing/breeding time is over for some of the younger girls, we may look at rehoming them in a home where they can be the queen bee. This is the main sticking point I have with becoming an active breeder though...it is really hard for me to think about sending some of my heart away to live with someone else