High milk yielding varieties of cows are obtained by

Options

A. super ovulation
B. artifical insemination
C. use of surrogate mother
D. all of the above

Answer

A

Explanation

In superovulation a high milk yielding coew is induced to shed 4-6 eggs every 6-8 weeks (instead of 20-21 days). The superovulated donor is artificially inseminated with semen from a quality bull. The embroyos developing from the eggs so fertilised are flushed out.These good quaulity embros are now tranfrerred toi surrogate mother for deliver.