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Chick embryolgy�semester V BSc III

  • M. H. Karennavar
  • Associate Professor in Zoology
  • Raje Ramrao College Jath

Dist Sangli Maharashtra

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Development of a Chick Embryo

Page 50 in lab book

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Safety

  • Eggs may contain Salmonella bacteria. Do not consume any part of the egg.
  • Wash hands thoroughly when finished.
  • Clean all surfaces.

http://web.uconn.edu/mcbstaff/graf/Student%20presentations/Salmonellatyphi/StyphiImage1.jpg

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Study of a hen’s egg

http://lafianzoo.com/wp-content/uploads/2009/01/10.jpg

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Eggs come in many different sizes

http://lujs.tripod.com/difference-in-eggs2.jpg

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Cutting open your egg.

  • 1. Draw an oval on the egg as shown in Figure 1.
  • 2. Carefully open the egg, do not break the yolk.

http://urbanext.illinois.edu/eggs/images/eggdiagram.gif

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Clean up

  • 1 Throw away the bowl with the egg in it.
  • 2. Clean with hot soap and water all dissection instruments then dry: Probe
  • scissors forcepts
  • 3. Wash down your lab table and dry

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Part II: Chick Embryos Page 53

  • There are only 4 slides that are 16 hours and 24 hours. You will have to share the slides.
  • Draw the image under low power in the margin of your lab book.
  • Answer all questions on the page

http://images.google.com/imgres?imgurl=http://www.aps.uoguelph.ca/~swatland/chick56.jpg&imgrefurl=http://www.aps.uoguelph.ca/~swatland/ch8_2.htm&usg=__YP_prC4svWFO3e6IDS0YLeVkfhk=&h=1996&w=1204&sz=2706&hl=en&start=5&um=1&tbnid=8awhUHwtYsvPGM:&tbnh=150&tbnw=90&prev=/images%3Fq%3Dchick%2Bembryology%26as_st%3Dy%26um%3D1%26hl%3Den%26sa%3DG

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33 Hour Chick Embryo: page 54

  • Obtain a slide of either a 33 or 48 hour embryo.
  • Draw the embryo in the margin of your lab book.
  • Answer all questions on page 54-55, 5-9.
  • Return Slides, put microscope away.

http://images.google.com/imgres?imgurl=http://www.aps.uoguelph.ca/~swatland/chick56.jpg&imgrefurl=http://www.aps.uoguelph.ca/~swatland/ch8_2.htm&usg=__YP_prC4svWFO3e6IDS0YLeVkfhk=&h=1996&w=1204&sz=2706&hl=en&start=5&um=1&tbnid=8awhUHwtYsvPGM:&tbnh=150&tbnw=90&prev=/images%3Fq%3Dchick%2Bembryology%26as_st%3Dy%26um%3D1%26hl%3Den%26sa%3DG

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Analysis and Interpretations

  • 1. Digestive
    • Nervous
    • Circulatory

2. Nervous

Circulatory

Digestive

3. Cellular communication is most important in development.

https://www.eevec.vet.ed.ac.uk/secure/embryology/chick60hpainted.jpg

60 hours