1 / 35

Chicken Embryology

Chicken Embryology. Development of a chick in the egg…. How a chick develops day by day during incubation. Day 1: 18 hours: digestive system starts to appear 20 hours: vertebral column starts to appear 21 hours: nervous system starts to appear and brain begins to form

neveah
Download Presentation

Chicken Embryology

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Chicken Embryology Development of a chick in the egg…..

  2. How a chick develops day by day during incubation • Day 1: • 18 hours: digestive system starts to appear • 20 hours: vertebral column starts to appear • 21 hours: nervous system starts to appear and brain begins to form • 22 hours: head begins to form • 23 hours: blood systems begin to form • 24 hours: eyes begin to form

  3. Day 1

  4. Day 2 • 25 hours: heart begins to form • 35 hours: ear pits begin to form • 37 hours: amnion starts to appear • 42 hours: heart begins to beat • 46 hours: throat begins to form

  5. Day 3 • 50 hours: amnion begins to form • 60 hours: nose begins to form • 62 hours: legs start to appear • 64 hours: wings start to appear • 70 hours: allantois begins to form

  6. Day 4 • Tongue begins to form • Tail appears • Toes begin to form • Circulation is fully functional

  7. Day 5 • Crop begins to form • Bones of the legs begin to form • Sex of the chick is determined • Reproductive organs begin to form

  8. Day 6 • Beak and egg-tooth begin to form • Ribs start to appear • Gizzard begins to form • Voluntary movement begins

  9. Day 7 • Wings bend at elbow, leg and knee • Toes are visible • Abdomen is bigger as the intestine starts to loop

  10. Day 8 • Feathers begin to form • Eye lids begin to form

  11. Day 9 • Mouth opening appears • Claws begin to form

  12. Day 10 • Beak begins to harden • Comb is visible • Flight feathers develop

  13. Day 11 • Toe claws begin to curve downwards • Bottom of feet become padded • Chick begins to take calcium from the eggshell

  14. Day 12 • Scales appear on the lower legs • Continual growth

  15. Day 13 • Body fairly well covered with feathers • Left and right collar bones join to form the wishbone

  16. Day 14 • Embryo turns its head towards the large end of the egg • Skull and ribs begin to ossify

  17. Day 15 • The scales, claws, and beak are becoming firm

  18. Day 16 • Chick is fully covered with feathers • Albumen is nearly gone and the yolk is more important as nourishment

  19. Day 17 • Chick turns its beak towards the air cell • Begins preparation for hatching

  20. Day 18 • Growth is nearly complete • Amnion begins to disappear

  21. Day 19 • Yolk sac begins to enter the body • Chick occupies all space in the egg except the air cell

  22. Day 20 • Yolk sac is completely drawn into the body • Beak breaks through inner shell membrane • Lungs begin to function and use the air cell for breathing • Allantois ceases to function and begins to dry up

  23. Time for…. • THE QUIZ!!!! • Get your clicker from me………answer the questions that follow with your clicker…..

  24. The nose begins to form on day 5. • True • False

  25. When does the head begin to form? • 36 hours • 2 days • 5 days • 22 hours

  26. The wings bend at the elbow, leg, and knee on day…. • Day 3 • Day 8 • Day 12 • Day 7 • Day 14

  27. This word deals with what we are doing with the eggs….I_C_B_T_O_ • I A N N U • E V I O N • T U L I A • E U Y H E

  28. How many days does it take to hatch a chicken egg? • 21 days • 22 days • 20 days • 24 days

  29. The shell is made up of phosphorus. • True • False

  30. The egg white is also known as the… • Yolk • Allantois • Membrane • Albumin

  31. Shell membranes are added in the Isthmus. • True • False

  32. It takes ______ days for turkey eggs to hatch. • 21 • 25 • 28 • 26

  33. It takes ____ days for a duck egg to hatch. • 33-35 • 29-32 • 22-25 • 21-23

  34. What kind of incubator do we use? • Still-air • Forced-air

More Related