Understanding Bovine Somatotropin and Lactation
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Questions and Answers

What role does bovine somatotropin (BST) play in milk production?

  • It affects the water content in milk.
  • It decreases overall milk yield.
  • It regulates and can increase milk yield when injected. (correct)
  • It is used to measure the lactation curve.

    • What does the lactation curve represent?

  • The total quantity of milk produced during a cow's life.
  • The fluctuations in milk production across multiple lactation cycles.
  • The time course of milk production during a specific lactation period. (correct)
  • The duration of time it takes for a cow to produce peak milk yield.

    • Which of the following factors is essential for optimal milk production in cows?

  • High protein levels in feed.
  • Sufficient calcium levels. (correct)
  • Low water intake.
  • Increased ambient temperature.

    • How much milk can cows typically produce each day?

    <p>8–9 gallons.</p> Signup and view all the answers

    What percentage of milk is composed of water?

    <p>87%</p> Signup and view all the answers

    Study Notes

    Bovine Somatotropin (BST)

    • BST is a naturally occurring hormone in cows
    • It's injected to increase milk production
    • Increases milk yield and reduces milk fat content

    Lactation Period

    • Lactation is the time a cow produces milk
    • Milk production follows a curve
    • Milk yield peaks during the lactation period
    • The lactation curve shows milk production over time

    Milk Production

    • Milk production varies depending on the cow's breed
    • Average lactation for dairy cows is 305 days for standard breeds
    • A gallon of milk is approximately 8.6155 pounds
    • Milk is mostly made up of water (around 87%)

    Calcium Levels

    • Calcium is crucial for optimum milk production and growth in cows
    • The ideal calcium level in milk is between 8.8-10.4 mg per 100 ml milk

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    Description

    This quiz explores the role of bovine somatotropin (BST) in milk production and the lactation period in cows. It covers various aspects of milk yield, calcium levels, and factors influencing milk production. Test your knowledge and learn more about dairy farming practices.

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