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PostPosted: Sat May 24, 2008 7:23 pm 
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Golden Robin
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Hmmmm..
Thats why they were bumped to remind me they were still there and its a tasked I had promised to do.

Mike

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PostPosted: Mon Sep 15, 2008 1:51 pm 
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Showy Hen
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ANYONE KNOW WHERE I can buy a poster of the embryo development?

some people have replied to post saying bump..what does this mean?

Michelle

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PostPosted: Mon Sep 15, 2008 2:33 pm 
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Phoenix
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Michelle,

Bump is simply a post to bump the original post back to the top of the list.

J

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PostPosted: Tue Sep 16, 2008 1:18 pm 
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Superior Bird
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I keep a colour copy of this next to the incubator - so I can have a look at what stage they are up to. Helps a tad with candling but really is just to give me something to look at - watching eggs incubate is not real exciting.


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PostPosted: Mon Aug 17, 2009 9:53 pm 
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Showy Hen
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what type of chook is this?

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PostPosted: Tue Aug 18, 2009 10:14 pm 
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Prime Pekin
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Wow,

What amazing photos,

I have just put 18 duck eggs in for my first attempt at incubating.

Although there is a few extra days wait for ducks, at least this is a rough idea of growth for ducklings too.

Its amazing to see the growth in each 24hour period.
Will make candling a little easy to understand too.

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PostPosted: Tue Aug 18, 2009 10:32 pm 
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Dapper Duck
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That is very informative. Thank you.

Janie :)


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PostPosted: Tue Aug 18, 2009 11:04 pm 
Very interesting, but how lucky is that chick that reached full term. Probably ended up being eaten.


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PostPosted: Thu Nov 19, 2009 11:12 pm 
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Phoenix
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Location: Perth Hills, WA
such a great thread... :thumbs:

just candled my eggs, and realised i have COMPLETELY forgotten WHAT DAY i set.... :aaargh:

it was either a monday or a friday.... so i think ive figured it out from these pics :thumbs:

thanks!

HBG


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PostPosted: Sat Dec 12, 2009 8:41 pm 
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Champion Bird
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Here is some text I found to go with your sticky Mike :wink:

Daily embryonic development
To better carry out an investigation into poor hatchability it is necessary to have knowledge of the way the embryo develops from day to day. This will allow the investigator to compare notes and to identify at what age/stage they may have died. This is important information when attempting to identify the cause of any poor results.

DAY 1: There are several important body functions and organs that become evident during the first day of incubation:
Hour 4: heart and blood vessels start to develop.
Hour 12: heart starts to beat; blood circulation begins; blood vessels of the embryo and the yolk sac join.
Hour 16: embryo takes on the chicken shape.
Hour 18: the alimentary tract appears.
Hour 20: the vertebral column appears.
Hour 21: the nervous system starts to develop.
Hour 22: the head begins to take shape.
Hour 24: the eyes start to develop.
DAY 2: The ears start to develop.
DAY 3: Early on day 3 the beak, legs and wings begin to develop. At 3.5 days the embryo begins to rotate so that it lies on it’s left side. The circulatory system development increases at a rapid rate.
DAY 4: The tongue starts to develop and all body organs are evident. The vascular system is clearly visible.
DAY 5: The reproductive organs separate and the sex can be determined. The heart begins to take on a definite shape. The embryo now is obviously a chicken.
DAY 6: The embryo starts to move in the egg.
DAY 7: The body starts to develop at a rate much greater than the head.
DAY 8: The first sign of feathers appear.
DAY 10: The beak hardens and the toes and scales appear.
DAY 11: The abdomen appears and the intestines are seen developing.
DAY 13: Most organs have developed and growth is the major activity. Down is present; skeleton starts to calcify.
DAY 14: The embryo moves to lie lengthwise in the egg with the head towards the larger end.
DAY 17: The head turns to locate under the right wing and with the beak directed towards the air cell.
DAY 19: The yolk sac containing the remaining yolk material starts to enter the chicken’s abdominal cavity. The chicken adopts a position to facilitate pipping of the shell by the beak.
DAY 20: The yolk sac is fully drawn into the abdominal cavity and the navel or umbilicus starts to close. The chicken’s beak penetrates the air cell and it takes it’s first breath i.e. pulmonary respiration commences.
DAY 21: After first pipping the shell the chicken rests for several hours. It then starts to break out of the shell by cutting around the shell from the first pip in a clockwise direction. It may take up to 20 hours from the first pip till the chicken escapes. This is a major undertaking for the cicken and any that are weak are unlikely to succeed or if they do they will be weak.
The normal hatching position is:

i.Forepart of the body towards the large end of the egg
ii.Head under the right wing
iii.Legs up under the head

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PostPosted: Sun Dec 13, 2009 3:19 pm 
Lclem wrote:
Here is some text I found to go with your sticky Mike :wink:

Daily embryonic development
To better carry out an investigation into poor hatchability it is necessary to have knowledge of the way the embryo develops from day to day. This will allow the investigator to compare notes and to identify at what age/stage they may have died. This is important information when attempting to identify the cause of any poor results.

DAY 1: There are several important body functions and organs that become evident during the first day of incubation:
Hour 4: heart and blood vessels start to develop.
Hour 12: heart starts to beat; blood circulation begins; blood vessels of the embryo and the yolk sac join.
Hour 16: embryo takes on the chicken shape.
Hour 18: the alimentary tract appears.
Hour 20: the vertebral column appears.
Hour 21: the nervous system starts to develop.
Hour 22: the head begins to take shape.
Hour 24: the eyes start to develop.
DAY 2: The ears start to develop.
DAY 3: Early on day 3 the beak, legs and wings begin to develop. At 3.5 days the embryo begins to rotate so that it lies on it’s left side. The circulatory system development increases at a rapid rate.
DAY 4: The tongue starts to develop and all body organs are evident. The vascular system is clearly visible.
DAY 5: The reproductive organs separate and the sex can be determined. The heart begins to take on a definite shape. The embryo now is obviously a chicken.
DAY 6: The embryo starts to move in the egg.
DAY 7: The body starts to develop at a rate much greater than the head.
DAY 8: The first sign of feathers appear.
DAY 10: The beak hardens and the toes and scales appear.
DAY 11: The abdomen appears and the intestines are seen developing.
DAY 13: Most organs have developed and growth is the major activity. Down is present; skeleton starts to calcify.
DAY 14: The embryo moves to lie lengthwise in the egg with the head towards the larger end.
DAY 17: The head turns to locate under the right wing and with the beak directed towards the air cell.
DAY 19: The yolk sac containing the remaining yolk material starts to enter the chicken’s abdominal cavity. The chicken adopts a position to facilitate pipping of the shell by the beak.
DAY 20: The yolk sac is fully drawn into the abdominal cavity and the navel or umbilicus starts to close. The chicken’s beak penetrates the air cell and it takes it’s first breath i.e. pulmonary respiration commences.
DAY 21: After first pipping the shell the chicken rests for several hours. It then starts to break out of the shell by cutting around the shell from the first pip in a clockwise direction. It may take up to 20 hours from the first pip till the chicken escapes. This is a major undertaking for the cicken and any that are weak are unlikely to succeed or if they do they will be weak.
The normal hatching position is:

i.Forepart of the body towards the large end of the egg
ii.Head under the right wing
iii.Legs up under the head

This info and those pics are great, for someone like me just starting and learning about raising chicks. Ron


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PostPosted: Sat Jun 19, 2010 9:47 pm 
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Junior Champion Bird
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Hi Mike,

I am bumping this thread as I just candle my very first clutch of eggs for the 2nd time.. day 11.. and I found this thread to be most useful..

From what I can gather on some of the threads lately.. there's a few first time setter like myself and I am sure they will find this helpful as well...

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PostPosted: Sun Oct 02, 2016 10:01 pm 
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Old Mother Goose
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Location: ACT area
Just found this old thread - thought others might like to see it


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PostPosted: Sun Oct 02, 2016 10:25 pm 
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Hatchling
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Sandy u there


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