Describe the steps involved in MOET (Multiple Ovulation Embryo Transfer).

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Q. Describe the steps involved in MOET (Multiple Ovulation Embryo Transfer).

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Concept understanding — Controlled Breeding — Artificial Insemination and MOET

Rather than leaving reproduction to chance natural mating, livestock improvement programmes increasingly rely on controlled breeding techniques, of which the two most important are artificial insemination and MOET.

Artificial insemination involves collecting semen from a male selected for its desirable traits, and then introducing this semen directly into the female's reproductive tract using an instrument, rather than through natural mating. This means the semen of a single, genetically superior male can be used to inseminate a very large number of females — even after being transported or stored — spreading his desirable traits far more widely through a herd than natural mating ever could, without needing to physically keep or move a breeding male to every farm.

MOET (Multiple Ovulation Embryo Transfer) is a technique that lets a single, genetically superior female produce far more offspring than she could by normal pregnancy, through a four-step protocol: (1) the donor cow is given hormone treatment (a follicle-stimulating hormone-like preparation) to induce superovulation, causing her to release six to eight eggs in a single cycle instead of the usual one; (2) she is then mated with a genetically superior bull, or artificially inseminated; (3) a few days later, the resulting early embryos are non-surgically flushed out and recovered from the donor's uterus; and (4) these embryos are then transferred into a number of surrogate (recipient) cows, who each carry one embryo to term as their own pregnancy. In this way, a single outstanding donor cow can produce many calves within a single year rather than the usual single calf, dramatically speeding up the spread of her superior genes through a herd.

In short, controlled breeding replaces random natural mating with deliberate, technology-aided techniques — artificial insemination and MOET — that let breeders multiply and spread desirable genetic traits through a population quickly and predictably.

MOET (Multiple Ovulation Embryo Transfer) follows a four-step protocol. First, the donor cow is given hormone treatment to induce superovulation, causing her to release six to eight eggs in a single cycle instead of the usual one. Second, she is mated with a genetically superior bull, or artificially inseminated. Third, a few days later, the resulting early embryos are non-surgically flushed out and recovered from the donor's uterus. Fourth, these embryos are transferred into a number of surrogate (recipient) cows, each of whom carries one embryo to term as her own pregnancy — letting a single outstanding donor cow produce many calves within one year.

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Superovulation of the donor \to mating/insemination \to non-surgical flushing of embryos \to transfer into surrogate (recipient) cows.

Same / Similar Concept — real previous-year questions on the same or a closely similar concept, not this exact question.

CBSE 2024Set ANNUAL3 marks
$Q. The success rate of Artificial Insemination (AI) in cattle is fairly low. What other technique can be used to improve the chances of successful production of hybrids ? Describe the technique. (1/2+2 1/2=3)$
›Reveal solutionSolution
MOET induces a cow to release multiple eggs at once, which are fertilised and the resulting embryos transferred into surrogate mothers — greatly increasing successful offspring production compared to ordinary AI.

While Artificial Insemination (AI) alone has a fairly low success rate, the technique of Multiple Ovulation Embryo Transfer Technology (MOET) is used to substantially improve the chances of successful hybrid/offspring production in cattle.

How it works:

A cow (the genetically superior donor) is administered hormones with FSH-like activity, inducing superovulation — the release of 6–8 eggs instead of the usual one per cycle.

The animal is either mated with a genetically superior (elite) bull or artificially inseminated.

The fertilised eggs (early embryos, at the 8–32 cell stage) are collected non-surgically from the donor's uterus.

These embryos are transferred into surrogate mother cows, which carry the pregnancies to term.

Meanwhile, the original donor cow becomes available for another round of superovulation and embryo collection.

This technique has been successfully used in cattle, sheep, rabbits, buffaloes, and horses to rapidly multiply the number of offspring from genetically superior/desired-breed animals.

Note: this is an Animal Husbandry (Strategies for Enhancement in Food Production) topic not present in this platform's current chapter menu for the subject; it is flagged as out-of-syllabus even though answered fully.

✓Final answer
$MOET (Multiple Ovulation Embryo Transfer Technology) — superovulation of the donor, fertilisation, and transfer of the resulting embryos into surrogate mothers.$

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Q.Describe the steps involved in MOET (Multiple Ovulation Embryo Transfer).

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