Breed­ing Terms: Line­breed­ing Ver­sus In­breed­ing

Dressage Today - - Born to Perform -

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.

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