Overcoming Inbreeding Depression
Inbreeding depression can be overcome by the following ways :
1. Out breeding- the breeding of animals which are unrelated to each other and do not have come ancestors for 4-6 generations 
2. Out crossing- mating done with the animals osf same breed but after 4-6 generations 
3. Cross breeding- superior male mated with superior female of another breed
4. Interspecific hybridisations- male and female  animal  of two different related species