What are the differences between inbreeding and out breeding?

Answer 1

Outcrossing of individual animals of the same species that are unrelated or very distantly related (beyond the 5th generation) often creates hybrid vigor...where the offspring are healthier and more robust than either parent. This is often done when a group of individuals are so closely related that fertility or health diminish due to the higher concentration of the same alleles in the entire group. It can also be used to add desired characteristics into a breeding program. The disavantage of a complete outcross is that recessive characteristics are often masked in the F1 generation.

Inbreeding of animals of the same species is done in an attempt to fix desireable characteristics in a group. The breeder using this technique must be careful to

cull offspring with undesirable characteristics as well as examine whether the parent animals should be used for continued breeding. It is generally agreed that inbreeding within the 1st through 3rd generation should be followed by an outcross and/or the

beginning of a linebreeding program.