Explain with examples the inbreeding and outbreeding of animal breeding.

Explanation

Animal breeding aims at improving the genotypes of domesticated animals to increase their yield and improve the desirable qualities to produce milk, egg and meal.
When breeding takes place between animals of the same breed, it is called inbreeding. The cross between different breeds is called outbreeding.

Inbreeding:
Inbreeding refers to the mating of closely related animals within the same breed for about 4-6 generations. Superior males and superior females of the same breed are identified and mated in pairs. It helps in the accumulation of superior genes and elimination of genes, which are undesirable. Hissardale is a new breed of sheep developed in Punjab by crossing Bikaneri (Magra) ewes and Australian Marino rams. Inbreeding depression: Continued inbreeding reduces fertility and productivity. Inbreeding exposes harmful recessive genes that are eliminated by selection Outbreeding: It is the breeding of unrelated animals. The offsprings formed are called hybrids. The hybrids are stronger and vigorous than their parents. Cross between two different species with desirable features of economic value are mated. Let.s see what cross produce a mule. Mule is superior to horse in strength, intelligence, ability to work and resistance to diseases but they are sterile.