Q1. Which method is commonly used for improving cattle breeds and why?
Crossbreeding is commonly used for improving cattle breeds. It is done between indigenous and exotic breeds for variety improvement.
The desired characteristics from both the breed are taken to produce a new improved variety. Exotic breed such as Jersey has long lactation periods, while local breeds such as Red Sindhi are very resistant to diseases.
The two are cross-bred to get calf with both the desired qualities.