Demodex (Red Mange) in AKC GSD's
Is it true that dams carrying the demodex predisposition should not be bred? I have an 8 month of GSD with Demodex and his breeders purported him to be of the highest quality bloodline.
From my research demodex is inherited and is an immune deficiency in the bloodline. What, if any, is the breeder's responsibility?