Excellent Article on Sexing Day Old Chicks...inc Vent Sexing

Discussion in 'Raising Baby Chicks' started by speckledhen, Feb 23, 2009.

  1. speckledhen

    speckledhen Intentional Solitude Premium Member

  2. katrinag

    katrinag Chillin' With My Peeps

    Good read. Thanks.
     
  3. 1mommahen

    1mommahen Love My Cluckin' Coop

    Mar 20, 2008
    NJ
    Very interesting, Thanks Speckledhen!
     
  4. katrinag

    katrinag Chillin' With My Peeps

    Do you know of any places that show better vent pictures?
     
  5. speckledhen

    speckledhen Intentional Solitude Premium Member

    I had a link to some other sexing documents, but it's probably very hard to get good pics of a tiny chick's vent. I dont think I have it on this laptop computer, but I'll look. I've seen pics in other places, but they still are hard to see. It's probably one of those things that's better shown in real life.
     
  6. Thanks for the great read Speckledhen , very interesting article !
     
  7. speckledhen

    speckledhen Intentional Solitude Premium Member

    I had a link to some other sexing documents, but it's probably very hard to get good pics of a tiny chick's vent. I dont think I have it on this laptop computer, but I'll look. I've seen pics in other places, but they still are hard to see. It's probably one of those things that's better shown in real life. This is one reason I love having Barred Rocks, which are much more easily sexed without going to a special school like vent sexers do.

    Here are some other sexing articles:

    http://www.dominiquechicken.com/Sexing_Dominique_chicks.html
    http://www.oznet.ksu.edu/pr_histpubs/Pubs/SB307.PDF

    Here's an excerpt from the last one:

    Quinn and Knox (1939) attempted to separate the sexes of
    Barred Plymouth Rocks by means of the intensity of the black
    pigment in the down and legs. In different lots of chicks they
    report 83.5, 86.1 and 91.8 percent accuracy.
    Jerome (1939) describes a method of sex identification in
    Barred Plymouth Rocks based upon the regularity of the outline
    of the head spot rather than the size of the spot. Those chicks
    having headspots irregular in outline and scattered in appearance
    are males while the females tend to have headspots withmore regular outlines. The author claimed an accuracy of 90
    percent or better when considering only the headspot and 95
    percent if the color of the legs was included in the consideration.
    The Canadian Department of Agriculture (Anonymous 1941)
    issues an excellently illustrated bulletin describing the method.
    It is stated in the bulletin that the method “is widely practiced
    in Barred Rock chicks by commercial chick sexers.” Sex identification
    is based upon outline of head spot, color of legs and
    shade of down color. There are several types of male and female
    head spots some of which are shown in Figure 1.
    RHODE ISLAND REDS
    Byerly and Quinn (1936) report that there is some sex difference
    in the down of Rhode Island Red chicks. The females
    tend to show spots or stripes of darker color in the down on the
    head and back. By separating the chicks into groups with and
    without spots or stripes sex was identified with 82 percent
    accuracy.​
     
    Last edited: Feb 23, 2009
  8. moonlyghtegirl

    moonlyghtegirl Chillin' With My Peeps

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    Feb 16, 2009
    Thank you!!!!
     
  9. Momma_Cluck

    Momma_Cluck Chillin' With My Peeps

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    Jun 11, 2008
    N. West Michigan
    Thak you SO much! We are desperately trying to sex our new chicks... great info, and links! Gotta Love Mother Earth News! Just started my subscription last month!!
    [​IMG]
     
  10. your_pal_skip

    your_pal_skip Out Of The Brooder

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    Feb 7, 2009
    Boise
    Oh wow, I've been really baffled by how little information there is on the internet about vent sexing. I don't have the confidence to do it myself, but it did seem weird that there's just NOTHING online that tells you how to do it. This article is amazing!
     

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