Question about double yolk eggs

Discussion in 'Ducks' started by shelleyb1969, Nov 23, 2010.

  1. shelleyb1969

    shelleyb1969 Star Bright Farm

    I have a Welsh Harlequin hen who has been laying for about 2 months now...and every egg is a huge double yolker. Will she ever "downsize" her eggs to normal size? And I'm assuming this is a bad thing to have as far as hatching ability?

  2. katharinad

    katharinad Overrun with chickens

    Double yolkers very seldom make it to hatch. I estimate that is is one in one hundred eggs that may make it to full term. Usually one embryo dies during incubation and poisons the other one. It's best not to try in the first place.
    Now to the question why double yolkers? They know that a diet high in protein leads to super sized eggs and double yolkers. That is probably the biggest factor, but there may be others as well. Keep the protein intake to around 17 percent. You can even go down as far as 14.5%, but that may even stop the laying cycle. I say it depends on the duck, and I would reduce it if she produces super sized eggs at 17%. It is stressful to lay such large eggs, and the duck will be so much happier if she can do with smaller ones.
  3. shelleyb1969

    shelleyb1969 Star Bright Farm

    My WHs are fed an 18% feed. This hen's "sister" lays perfectly normal eggs. I definitely wouldn't incubate or sell the double yolkers.
  4. tia

    tia Songster

    Apr 19, 2009
    Valdez, Alaska
    When they first start laying you get all sizes. You will get some double yolkers that are huge and some little ones that don't have a yolk in them. It evens out and they become uniform in size. At least this is the case with my Indian Runner Ducks.
  5. iamcuriositycat

    iamcuriositycat Songster

    Jul 30, 2009
    Charlotte, NC
    I do think there's some genetic component too--some girls are more inclined to lay double yolkers. But it should even out as she matures. Still, it wouldn't hurt to lower the protein a bit--it's easy to do with rolled or whole oats. You can buy a 50 lb bag for about $10 at the feed store--just cut the feed by 1/4 or so with oats and it brings the protein percentage down.

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