Question

which method is commonly used for improving cattle breeds and why

Answer 1

answer no. 10 hope this will help you

Answer 2

Answer:  

Crossbreeding method is commonly used for 'improving' the cattle breeds.

Explanation:  

Crossbreeding between two good varieties of any animal will produce a 'new improved variety'. Crossbreeding needs two different species to breed or for crossing over. We need cross-breeding to get a different type of gene animal, to improve milk production and for production efficiency.  That’s why we need it so much.

Crossbreeding takes good genes from both individuals and carries it to the future generation.