Mating of animals of different breeds known as:

🔑 Explanation
Cross Breeding:
→ Cross breeding is the mating of two individuals from different breeds.
→ It is done to exploit hybrid vigor or heterosis.
→ Breeds represent tremendous resources of varying genetic material.
→ Crossbreeding has been used in recent years to establish a broad genetic base in the development of new breeds or synthetics.
→ In crossbreeding, one or two crosses between two or more populations are made to produce a single population of animals containing genes from each population involved.

📌 Important Guidelines:
→ Ensure that the animals used in the original crossings have been intensely selected in terms of relevant characters. It is of no use starting a synthetic with inferior animals.
→ Maximize variance in breeding values amongst the foundation animals in the synthetics, using as many unrelated animals as possible from each of the contributing populations.
→ Once a synthetic has been formed, the main aim is to improve it rapidly by selection within it.

🔴 Additional Information
Out Breeding:
→ Outbreeding is the mating of animals that are less closely related to each other than the average population.
→ Its general effects are the opposite of inbreeding.
→ Outbreeding increases heterozygosity of the individual.
→ The maximum practical usefulness of outbreeding systems is the production of animals for the market.
→ Outbreeding systems are broadly classified as Cross Breeding, Out Crossing, Top Crossing, Line Crossing, Grading, and Species Hybridization.