Only during recent years, due to commercialization of agriculture, more emphasis has been given on cash crops, which contribute very little to the animal food. As a result, the livestock breeds sustainable on agricultural byproducts are becoming relatively uneconomical on competitive agricultural farming and are being replaced by more productive indigenous or exotic breeds from a different environment. Livestock genetic resources in India is undergoing an unprecedented change between plenty and poverty. In the absence of planned efforts to conserve and maintain purebred populations, indiscriminate breeding within the native stock as well as with exotic breeds has continued. It has been estimated that nearly 80% of indigenous animals are non-de script and practically useless for resource development. This is in sharp contrast to the situation in developed countries where each animal is known for its pedigree.