Biotechnology and Dairy Cattle Quiz
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Questions and Answers

What is the potential gain in dairy cattle achieved through artificial insemination?

  • 1% of the mean gain is cumulative once each year's gain is achieved (correct)
  • 2% of the mean gain is cumulative once each year's gain is achieved
  • 10% of the mean gain is cumulative once each year's gain is achieved
  • 5% of the mean gain is cumulative once each year's gain is achieved

    • What effect does the use of artificial insemination have on the rate of inbreeding in closed populations?

  • Provides a wider choice of unrelated genetic effect (correct)
  • Ensures sufficient levels of population production
  • Increases the intensity of selection of males progeny testing
  • Negatively impacts the rate of inbreeding

    • What happens to the exogenous source in the context of multiple ovulation and embryo transfer (MOET)?

  • It extends the luteal phase in treated females
  • It continues to exert a negative feedback on FSH and LH secretion
  • It ensures accuracy of progestagens
  • It regresses naturally during the period when MOET is applied (correct)

    • What is the purpose of distributing semen from a team of young bulls?

    <p>To increase the intensity of selection of males progeny testing</p> Signup and view all the answers

    What is the potential use of the corpus luteum (CL) in the context of artificial insemination?

    <p>It could be mated by a semen of bulls that have been long dead</p> Signup and view all the answers

    Match the following terms with their descriptions:

    <p>Artificial insemination = Distribute semen from a team of young bulls Potential gain in dairy cattle through AI = 1% of the mean gain is cumulative once each year's gain has been achieved Multiple ovulation and embryo transfer (MOET) = Use of the CL could be mated by a semen of bulls that have been long dead Exogenous source in AI = Negatively feedback on FSH and LH secretion, even after external source is withdrawn</p> Signup and view all the answers

    Study Notes

    Potential Gains in Dairy Cattle from Artificial Insemination

    • Artificial insemination (AI) improves genetic diversity, allowing farmers to select bulls with superior traits for breeding.
    • There is potential for enhanced milk production, better health traits, and improved growth rates through targeted breeding.
    • AI facilitates more rapid genetic progress compared to natural breeding methods.

    Effects on Inbreeding Rates in Closed Populations

    • Use of artificial insemination reduces inbreeding rates by introducing diverse genetic material.
    • AI allows access to a wider range of genetic profiles, leading to healthier populations.
    • Closed populations may otherwise face increased risks of genetic defects due to limited genetic variation.

    Impact of Exogenous Source in MOET

    • Exogenous sources refer to external genetic contributions in multiple ovulation and embryo transfer (MOET) techniques.
    • This method allows for the transfer of genetically superior embryos to enhance herd performance.
    • The process reduces the time required for breeding superior cattle by bypassing traditional gestation periods.

    Purpose of Distributing Semen from Young Bulls

    • Distributing semen from a team of young bulls diversifies genetic traits in a breeding program.
    • Young bulls are often less inbred and can introduce novel genetic materials when bred with a variety of cows.
    • This practice helps maintain genetic diversity, enhancing herd resilience and productivity.

    Potential Use of Corpus Luteum in AI

    • The corpus luteum (CL) plays a crucial role in maintaining pregnancy post-insemination.
    • Its function can be manipulated to synchronize estrous cycles in cows, optimizing timing for insemination.
    • Monitoring the CL can enhance the success rates of artificial insemination by ensuring better timing in fertilization.

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    Description

    Test your knowledge on biotechnology, artificial insemination, and potential gains in dairy cattle with this chapter 5 exam review. Explore topics such as cumulative gain, inbreeding, and population production.

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