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Chicken Embryo Daily Growth Day 1-18

post #1 of 3
Thread Starter 

These Pictures you see were from my project "The New Way To Watch An Embryo Grow" project started in 2009. After 7 attempts I finally got one to hatch and at the same time watching it grow without candling. More of the story Click HERE-  http://www.backyardchickens.com/t/671922/the-new-way-to-hatch-and-grow-an-embryo-it-hatched-we-did-it-huge-thanks-to-everyone/80#post_9532401

 

 

 

 

 

 

Day 1- 

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      6 to 10 h - First kidney-like cells (pronephros) begin to form.

      8 h -Appearance of primitive streak.

     10 h -Yolk sac (embryonic membrane) begins. Functions include: a) blood formation; b) yolk digestion; c) yolk absorption; d) food provision after hatching. Mesoderm appears; embryo oriented at 90° angle to egg's long axis; mesonephros begins.

     18 h -Primitive gut begins; primordial germ cells appear in germinal crescent.

     20 h -Vertebral column begins.

     21 h -Appearance of neural groove, nervous system.

     22 h -Appearance of first pair of somites (block-like segments) and head.

     23 to 24 h -Blood islands, vitelline (yolk sac) circulation, blood, heart,blood vessels begin (2 to 4 somites).

 

Video- http://www.youtube.com/watch?v=P_aocalndpw&list=PLFA6E52942972B4DD&index=4&feature=plpp_video
 

 

  Day 2-

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     25 h -Appearance of eye; vertebral column visible; embryo begins to turn on left side (6 somites).

     28 h -Ear begins (7 somites).

     30 h -Amnion (embryonic membrane around embryo) begins. Primary function is to protect embryo against shock and sticking; also responsible for some albumen absorption. Chorion (embryonic membrane that fuses with allantois) begins; heartbeat begins (10 somites).

     38 h -Cranial flexure and torsion evident; heartbeat moves blood (16 to 17 somites).

     42 h -Thyroid begins.

     48 h -Anterior pituitary and pineal glands begin to develop.

 

Video- http://www.youtube.com/watch?v=fcs918ixETE&feature=channel&list=UL

 

 

 

Day 3-

day 3.bmp

 

     50 h -Embryo turns on left side; allantois (embryonic membrane that fuses with chorion) begins. Functions of chorioallantois are: a) respiration; b) albumen absorption; c) absorption of calcium from shell; d) storage of kidney excretions.

     60 h -Nasal pits, pharynx, lungs, anterior limb buds begin.

     62 h -Posterior limb buds begin.

     72 h -Middle and outer ear, trachea begin; amnion completes growth around embryo.

 

Video- http://www.youtube.com/watch?v=IU3OL3ZA6v4&feature=channel&list=UL

 

 

 

 

Day 4-

day 4.bmp

 

Tongue and esophagus begin; embryo separates from yolk sac; allantois grows through amnion; contractions occur in amnion wall; adrenal development begins; pronephros (nonfunctional kidney) disappears; metanephros (definitive or final kidney) begins; proventriculus, gizzard, ceca, large intestine begin. Pigment visible in eye (dark eye

 

Video- http://www.youtube.com/watch?v=YHjRiSC61jk&feature=channel&list=UL

 

 

 

Day 5-

day 5.bmp

 

Reproductive system and differentiation of sex appear; thymus, bursa of Fabricius, duodenal loop begin; chorion and allantois begin to fuse; mesonephros begins to function; first cartilage present.
 

 

Video- http://www.youtube.com/watch?v=0104_TyE6NE&feature=channel&list=UL

 

 

 

Day 6-

day 6.bmp

 

Beak appears; voluntary movement begins; chorioallantois (chorion fused with allantois) lies against shell near large end of egg.
 

Video- http://www.youtube.com/watch?v=L9jQ4M3l-0Q&feature=channel&list=UL
 

 

 

Day 7-

 day 7.bmp

 

 Digits appear; comb growth begins; egg tooth begins; melanin produced; absorption of mineral from shell begins. Chorioallantois is attached to inner shell membrane and growth around the inner surface is progressing.

 

Video- http://www.youtube.com/watch?v=LsQV7kjzg5Y&feature=channel&list=UL
 

 

 

 

Day 8-

 day 8.bmp

 

Father tracts appear; parathyroid begins; bone calcification begins.

 

Video- http://www.youtube.com/watch?v=fwrSALWikFk&feature=BFa&list=UL1ILb4RtGXRg



 

 

 

 

Day 9-

day 9.bmp

 

Growth of chorioallantois about 80% complete (still open at small end); mouth opening appears.

 

Video- http://www.youtube.com/watch?v=ojtqd0j_tdo&feature=channel&list=UL

 

 

 

 

 

 

Day 10-

day 10.bmp

 

Beak begins to harden; digits completely separated.

 

Video- http://www.youtube.com/watch?v=1ILb4RtGXRg&feature=channel&list=UL
 

 

 

 

 

 

 

Day 11-

-day 11.bmp

 

 Abdominal walls established; loops of intestine begin to protrude into the yolk sac; down feathers visible; comb and wattles visible; claws and scales appear on toes; mesonephros reaches maximum level of function, then begins to degenerate; metanephros begins to function.


Video- http://www.youtube.com/watch?v=zR3HGddfCTo&feature=channel&list=UL

 

 

Day 12-

Day 12.bmp

 

 

Chorioallantois completes enclosure of egg contents; embryo water content begins to decrease.

 

Video- http://www.youtube.com/watch?v=c7F2_z1bmR4&feature=channel&list=UL

 

 

 

Day 13-

-day 13.bmp

Cartilaginous skeleton is relatively complete; embryo heat production and oxygen consumption begin to increase rapidly.

Video- http://www.youtube.com/watch?v=YTjBh_NF2PU&feature=channel&list=UL

 

 

Day 14-

Day 14.bmp

 

 

Embryo begins to turn head toward large end of egg; long bone ossification becomes rapid. Turning of egg no longer essential.

Video- http://www.youtube.com/watch?v=-Fh_tlEYaL0&feature=channel&list=UL

 

 

Day 15-

day 15.bmp

 

 

Intestinal loops easily seen in yolk sac; contraction of amnion ceases.

 

Video- http://www.youtube.com/watch?v=41aMhmmVD_o&feature=channel&list=UL

 

 

 

 

Day 16-     

Day 17.bmp

 

 

Beak, claws, and scales relatively cornified; albumen is practically gone and yolk increasingly important as food source; down feathers cover body; intestinal loops begin to retract into body.

 

Video- http://www.youtube.com/watch?v=Ljk9IfkZ6Kc&feature=channel&list=UL

 

 

 

Day 17-

 

day 16.bmp

 

Amniotic fluid decreases; embryo positioning head toward large end, toward right wing with beak toward air cell; definitive feathers begin.

Video- http://www.youtube.com/watch?v=P0j61aXdGaU&feature=channel&list=UL

 

 

 

Day 18-

day 18.bmp

 

Video- http://www.youtube.com/watch?v=KXijRBWvlF4&feature=channel&list=UL

 

Blood volume decreases, total blood hemoglobin decreases. Embryo should be in proper position to hatch: embryo's long axis the same as long axis of egg; head in large end of egg; head to right and under right wing; beak pointed toward air cell; feet toward head.

 

 

Day 19:  Intestinal loop retraction complete; yolk sac begins to enter body cavity; amniotic fluid (swallowed by embryo) disappears; beak may pierce air cell and lungs begin to function (pulmonary respiration).


Day 20:  Yolk sac completely drawn into body; air cell pierced, followed by functioning of pulmonary respiration; embryo makes sounds; chorioallantoic circulation, respiration, and absorption decrease; embryo may pip shell.


Day 21:  Hatching process: chorioallantoic circulation ceases; embryo breaks shell over air cell with egg tooth; embryo slowly rotates in egg counterclockwise, chipping and breaking shell as it does; embryo kicks and attempts to straighten neck, pushes shell open; kicks free of shell, rests, straightens, dries.


>Day 21:  Some embryos are unable to hatch but survive beyond the normal hatching time.

 


 


Edited by pax12 - 8/25/12 at 7:45pm

   

 

Hatching, Candling Videos  and much more- http://www.youtube.com/playlist?list=PLFA6E52942972B4DD&feature=edit_ok

 

Live eggcam http://www.mycampage.com/stephenchickenandgreenhousecam
(Named Chickens and Ducks) Stephenie-2005 The Three Ducks- 2007 Bert and Tim 2008 Bill-2010 Kordon and Hopper, Big Boy, Snowflake and Blackie 2012 Peaches The Duck 2013

Reply

   

 

Hatching, Candling Videos  and much more- http://www.youtube.com/playlist?list=PLFA6E52942972B4DD&feature=edit_ok

 

Live eggcam http://www.mycampage.com/stephenchickenandgreenhousecam
(Named Chickens and Ducks) Stephenie-2005 The Three Ducks- 2007 Bert and Tim 2008 Bill-2010 Kordon and Hopper, Big Boy, Snowflake and Blackie 2012 Peaches The Duck 2013

Reply
post #2 of 3
Thread Starter 

I do have a duck Daily Growth thats in the works.

   

 

Hatching, Candling Videos  and much more- http://www.youtube.com/playlist?list=PLFA6E52942972B4DD&feature=edit_ok

 

Live eggcam http://www.mycampage.com/stephenchickenandgreenhousecam
(Named Chickens and Ducks) Stephenie-2005 The Three Ducks- 2007 Bert and Tim 2008 Bill-2010 Kordon and Hopper, Big Boy, Snowflake and Blackie 2012 Peaches The Duck 2013

Reply

   

 

Hatching, Candling Videos  and much more- http://www.youtube.com/playlist?list=PLFA6E52942972B4DD&feature=edit_ok

 

Live eggcam http://www.mycampage.com/stephenchickenandgreenhousecam
(Named Chickens and Ducks) Stephenie-2005 The Three Ducks- 2007 Bert and Tim 2008 Bill-2010 Kordon and Hopper, Big Boy, Snowflake and Blackie 2012 Peaches The Duck 2013

Reply
post #3 of 3
Thread Starter 

also an emu one !!!

   

 

Hatching, Candling Videos  and much more- http://www.youtube.com/playlist?list=PLFA6E52942972B4DD&feature=edit_ok

 

Live eggcam http://www.mycampage.com/stephenchickenandgreenhousecam
(Named Chickens and Ducks) Stephenie-2005 The Three Ducks- 2007 Bert and Tim 2008 Bill-2010 Kordon and Hopper, Big Boy, Snowflake and Blackie 2012 Peaches The Duck 2013

Reply

   

 

Hatching, Candling Videos  and much more- http://www.youtube.com/playlist?list=PLFA6E52942972B4DD&feature=edit_ok

 

Live eggcam http://www.mycampage.com/stephenchickenandgreenhousecam
(Named Chickens and Ducks) Stephenie-2005 The Three Ducks- 2007 Bert and Tim 2008 Bill-2010 Kordon and Hopper, Big Boy, Snowflake and Blackie 2012 Peaches The Duck 2013

Reply
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