[firewalk]

to pass on cracking hoofs to all his offspring.

Is there also a genetic predispostion to this?
I've seen it caused by various other things.

[gate2wire]

“Quarter cracks are caused by a variety of factors, including genetic predisposition, time of year, improperly trimmed feet, and traumatic injury.”

http://www.thoroughbredtimes.com/horse-health/1996/July/27/Healing-quarter-cracks.aspx