*2.3.3 Family selection*

Family is a group of individuals that descended from the same ancestor. Family represents a group of animals having common genetic relationship. In family selection, it is presumed that the ancestor has outstanding merit. In animal breeding, generally, the family is a group of animals having a common genetic relationship. In animal population under random mating, generally half sibs (HS) and full sibs (FS) are the most common collateral relatives, whose records are often used to estimate the breeding value. When individual's performance is also included in calculating the sibs average performance, it is called family selection. Family selection is very useful in case of traits with low heritability [1, 3].
