Multiple ovulation and embryo transfer (MOET) Which statements about MOET in livestock breeding are correct?
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AIt can increase the genetic progress rate in dairy cattle
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BIt allows progeny testing of males more efficiently
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CIt allows progeny testing of females by generating many offspring from elite dams
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DAll of the above
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ENone of the above
Answer
Correct Answer: All of the above
Explanation
Introduction / Context:MOET is a reproductive technology used in cattle and other species to amplify the number of offspring from genetically superior animals, accelerating genetic gain in breeding programs.
Given Data / Assumptions:
- Superovulation yields multiple embryos from elite females.
- Embryos can be flushed, evaluated, and transferred to recipient females.
- Genetic evaluation relies on performance and progeny data.
Concept / Approach:By multiplying embryos from top sires and dams, MOET expands the dataset for genetic evaluations, enables earlier and more accurate selection, and spreads elite genetics quickly across herds.
Step-by-Step Solution:
Use exogenous hormones to induce multiple ovulations in elite donors.Fertilise (AI or natural) and non-surgically recover embryos.Transfer embryos to synchronized recipients to produce many half-sibs.Leverage the larger progeny groups for robust progeny testing of both sires and dams.Verification / Alternative check:Breeding program simulations and field data show increased selection intensity and shortened generation intervals using MOET.
Why Other Options Are Wrong:
- Each single statement (a–c) is correct but incomplete; MOET delivers all these benefits.
- “None” contradicts well-documented outcomes.
Common Pitfalls:Poor synchronization of recipients, inadequate donor response to hormones, and insufficient genetic evaluation frameworks can diminish MOET benefits.
Final Answer:All of the above