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Which of the following has been recently used for increasing productivity of super milk cows?
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- Artificial insemination by a pedigreed bull only
- Superovulation of a high production cow only
- Embryo transplantation only
- A combination of superovulation, artificial insemination and embryo transplantation into a 'carrier cow' (surrogate mother)
Correct Option: D
In superovulation, a high milk yielding cow is induced to shed 4–6 eggs (instead of one) every 6–8 weeks (instead of 20–21 days). The superovulated donor is artificially inseminated with semen from a quality bull. The embryos developing from the eggs so fertilised are flushed out. These good quality embryos are now transfered to surrogate mother for delivery.
