In MOET, embryo transfer into surrogate mother is done at which of the following stage ?

Options

A. 8-32 called
B. 1-2 celled
C. 32-64 celled
D. 64-128 celled

Answer

To solve the question regarding the stage at which embryo transfer into a surrogate mother is done in the Multiple Ovulation Embryo Transfer (MOET) technique, we can follow these steps:

### Step-by-Step Solution:

1. **Understand MOET**: MOET stands for Multiple Ovulation Embryo Transfer. This technique is used primarily in animal breeding to enhance the reproductive efficiency of livestock.

2. **Identify the Process**: In MOET, the process begins with inducing superovulation in the donor animal. This is achieved by administering hormones, particularly Follicle Stimulating Hormone (FSH), which stimulates the ovaries to produce multiple eggs (usually around 6 to 8).

3. **Fertilization**: After the eggs are produced, the donor animal is mated, and the eggs are fertilized either naturally or through artificial insemination.

4. **Embryo Development**: The fertilized eggs develop into embryos. At this stage, the embryos can be at various stages of development, but the question specifically asks for the stage at which they are transferred.

5. **Transfer Stage**: The embryos are typically transferred to the surrogate mother when they reach the 8 to 32 cell stage. This is the optimal stage for transfer, as the embryos are viable and can implant successfully in the surrogate's uterus.

6. **Conclusion**: Therefore, the correct answer to the question is that in MOET, the embryo transfer into the surrogate mother is done at the 8 to 32 cell stage.

### Final Answer:
The embryo transfer into the surrogate mother in MOET is done at the **8 to 32 cell stage**.

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