I have a high white blazed female that I'd like to breed, *however* I know these traits are high risk for megacolon. Given that, I'd like to know which of my males would be best to put her with to reduce this risk. My choices are:

Blue capped dumbo
Black capped dumbo
Himalayan
Black self dumbo

Would any of these be okay to breed with her, or should I give up on the idea entirely?