Summary: Biology Of Domestic Animals

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  • 1 Egg

  • 1.1.1 The function of the egg

    This is a preview. There are 5 more flashcards available for chapter 1.1.1
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  • What starts at the ovum?

    The reproduction process
  • What is characteristic for oligolecithal egg cells?

    Very little yolk - mammalian eggs
  • What is characteristic for telolecithal egg cells?

    The yolk fills the largest part of the cell and a small quantity of cytoplasm is collected at one pole - insects, fish, reptiles and birds
  • What are animals that give birth to live young?

    Viviparous
  • 1.1.2 Egg production

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  • To which species can the most global egg production be ascribed?

    Chicken
  • Which duck breed is best known for its laying capacity? And what is that capacity?

    Khaki Campbell - 300 eggs per year.
  • Where and when was the battery cage developed?

    United States - 1960s
  • What was possible as the battery cage came?

    Mechanising and automating chicken farming for egg production.
  • What happened to duck egg farming at the beginning of the 1960s?

    It declined sharply because of:
    • Declining supply of fresh fish
    • Export problems due to Salmonella infections
    • Environmental problems 
  • When were battery cages banned in the EU?

    2012
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