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Embryo Transfer Technology

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Rural Technology

Embryo transfer is a specialized technique of breeding. A sexually mature female referred to as the donor is injected with exogenous hormones to produce. More ova, which are fertilized inside her either by natural or artificial service. These are then removed prior to their implantation and transfer to the reproductive tracts of synchronized surrogate mothers of the same species referred to as the recipients. The fertilized ova, thus are developed in the recipient body and resulting offspring derive their genes from the donor and from the male to which donor was bred.

The embryo transfer technique consists of following important steps: 1. Selection and management of donor and recipients. 2. Super ovulation and estrus synchronization of the donor and the recipients. 3. Insemination of the donor. 4. Collection of embryos. 5. Identification and storage of embryos 6. Transfer of embryos. Intext Questions 3.3

Match the followings:

A B i) Mature female a) Deposition of semen into female reproductive tract. (sperm) ii) Surrogate mother b) Union of male and female gamete (ova) iii) Insemination c) Attachment of developing embryo iv) Implantation d) Recipient v) Fertilization e) Donor

What you have learnt

Inbreeding and out breeding systems of breeding are useful for improvement of livestock. Cross breeding is useful for producing new breeds while grading up is useful for improvement of non-descript breeds. Artifical Insemination and Embryo transfer techniques are useful tools of breeding in Modern livestock management.

Terminal Questions

1. Write the advantages and disadvantages of Artifical Insemination. 2. Explain in brief the embryo transfer technology. 3. Represent diagrammatically the systems of breeding animals. 4. Write short notes on i) Grading up, ii) Cross-breeding. 3.8 Answers to Intext Questions 3.1 1. Inbreeding 2. Out breeding 3. Close breeding and Line breeding 4. Grading up 5. Species hybridization 3.2 1. Sperm 2. Ovum 3. Proven bull 4. Offspring 5. Mating of unrelated animals. 3.3 1. Donor 2. Recipient 3. Deposition of semen into female reproductive tract. 4. Attachment of developing embryo. 5. Union of male (sperm) and female gamete (ova)

Suggested activity

Visit a veterinary dispensary to study Artifical Insemination, embryo transfer technology.

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Rural Technology