This is the raising of offspring or progeny by the mating of two or more closely related individuals. Inbreeding produces pure breeding line with some creditable features. It is resistant to disease.
Inbreeding of some animals such as cats and dogs has been used by livestock breeders to produce cattle, pigs, poultry and sheep with high yields of milk, meat, eggs and wool respectively. In breeding is not widely used. Perpetual in-breeding can result to a reduction of fertility, a major set-back in the in-breeding of livestock.