Discussion in 'Incubating & Hatching Eggs' started by NoSkiveez, Aug 24, 2010.

  1. NoSkiveez

    NoSkiveez NoSkiveez Poultry

    Dec 27, 2009
    Casa Grande
    My Coop
    I switched around roosters in my breeding pen. How long can I expect the eggs to have been fertilized by the other rooster? I want to be on the safe side and not hatching chicks from the rooster I took out of this pen.
  2. Katy

    Katy Flock Mistress

    I like to allow 3 weeks minimum.....usually 4 weeks.
  3. Mahonri

    Mahonri Urban Desert Chicken Enthusiast Premium Member

    May 14, 2008
    North Phoenix
    My Coop
    I had a Light Brown Leghorn hen that was fertile by a Partridge cochin roo for over a month.
  4. Kittymomma

    Kittymomma Chillin' With My Peeps

    Sep 9, 2009
    Olympia, WA
    Three weeks is usually safe. You could also keep the pen hens only until all the eggs stop showing fertility and then introduce the new roo, might speed things up since many birds only stay fertile for 7-10 days.
  5. Doodle_Doo

    Doodle_Doo Chillin' With My Peeps

    Oct 10, 2009
    Missouri City, TX
    i would wait a month but it can still come out with some signs of the first roo
    had that happen even 5 weeks after the roo swtich

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