of the following
general systems of breeding is possible for use in dairy animals:
Inbreeding involves the mating of animals that are closely related.
Inbreeding is usually avoided by dairy breeders since it presents a
high risk for exposure to undesirable or even lethal recessive
breeding is breeding of genetically related parents i.e. of same
breed. It is practiced extensively by dairy breeders and it is a
comparatively safer breeding program.
mating of unrelated animals i.e. of different breeds is called
crossbreeding. It is the most widely used system of breeding by
dairy producers. It helps introduce new genes into the herd simply
because a wide choice of animals is available. It often results in
producing animals that are highly desirable.