Breeding Terms: Linebreeding Versus Inbreeding
Linebreeding pairs animals who are related to a specific ancestor with the intention of preserving that ancestor’s influence on the offspring. (In Mister X’s pedigree, we see he’s linebred to Trakehner sire Piligrim and Thoroughbred Raufbold.) This differs from inbreeding, which is the breeding of two closely related relatives (i.e., father to daughter). Inbreeding is used with the intention of securing desirable traits in the offspring, but can sometimes inadvertently result in securing negative traits. Outcrossing is the process of introducing unrelated genetic material into a particular breeding line.