Ruminant Nutrition and Protein Digestion
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Questions and Answers

What is required by rumen microbes to break down protein?

  • Rumen-degradable protein
  • Adequate carbohydrate for fermentation (correct)
  • Large amounts of soluble carbohydrate
  • Adequate source of ammonia

    • What is the primary purpose of Rumen Undegradable Protein (RUP)?

  • To produce vitamins and minerals
  • To bypass the rumen and be digested in the intestines (correct)
  • To provide energy to the rumen microbes
  • To support the growth of rumen microbes

    • What happens to protozoal populations when rumen pH drops to around 5.5?

  • They decline markedly (correct)
  • They adapt to the new pH
  • They remain unaffected
  • They increase significantly

    • What is the main source of protein for ruminants?

    <p>Intestinal enzymatic digestion of microbes</p> Signup and view all the answers

    What is the main function of Rumen Degradable Protein (RDP)?

    <p>To support the growth of rumen microbes</p> Signup and view all the answers

    What is the primary source of energy for the cow from microbial fermentation?

    <p>Volatile fatty acids (VFAs)</p> Signup and view all the answers

    Why is Rumen Undegradable Protein (RUP) required by high-producing ruminants?

    <p>Because rumen microbial protein alone is not adequate for their needs</p> Signup and view all the answers

    What is the role of β-glucanase enzymes in microbial fermentation?

    <p>Digesting cellulose and hemicelluloses fibers</p> Signup and view all the answers

    What is the source of ammonia for microbial growth?

    <p>Rumen-degradable protein</p> Signup and view all the answers

    What is the role of fats in the rumen?

    <p>To provide a concentrated form of energy to the rumen microbes</p> Signup and view all the answers

    What is the fate of Rumen Undegradable Protein (RUP) in the dairy cow?

    <p>It is broken down in the intestines</p> Signup and view all the answers

    What is the significance of vitamins in the diet of ruminants?

    <p>Vitamins A and D must be provided from the diet</p> Signup and view all the answers

    What is the primary source of energy from butyric acid in the rumen wall?

    <p>Ketones</p> Signup and view all the answers

    What is the resulting compound from protein digestion by microbial proteases and peptidases in the rumen?

    <p>Ammonia (NH3)</p> Signup and view all the answers

    What is the primary source of nitrogen for microbial protein synthesis in the rumen?

    <p>Ammonia (NH3)</p> Signup and view all the answers

    What is the driving force for the synthesis of microbial protein in the rumen?

    <p>Carbohydrate fermentation</p> Signup and view all the answers

    What is the fate of glucose units released from microbial fermentation?

    <p>They are absorbed directly by the cow</p> Signup and view all the answers

    What are the two sources of protein for the dairy cow?

    <p>Microbial protein and Rumen Undegradable Protein (RUP)</p> Signup and view all the answers

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