CBSE Class 9 Answered

Cross-breeding method is commonly used for improving cattle breeds. This is a traditional method of breeding which takes place by cross-breeding between the desi or local breed and the exotic breed by the natural physical mating process. The exotic breeds usually have long lactation periods while local breeds show excellent resistance to diseases. Cross- breeding the two can produce animals with both the desired qualities.

The milk yield and prolongation of lactation period have improved greatly through successful cross-breeding programmes.