Full-sibling matings force the rapid pairing of genes, so give either the best or the worst quality offspring.

Some folks say if it works it’s linebreeding, if it doesn’t work it’s inbreeding.

While it’s truly all inbreeding, my personal take on it is that “linebreeding” should be defined as having a plan, the mating of relatives done with an eye towards improvement, and strict culling is practiced. While random matings of relatives with no plan, no eye towards improvement, and no culling, is inbreeding.

Ann B