1. Oct 3, 2013 #1
   

   mdp1965 New Egg

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   Jan 28, 2012

   I have a Rhode Island Red who has begun to lay very light colored yolks ( a month or so at this point.). The other hen ( a americana) lays normal colored yolks. Both get same food, same coop , no rooster etc. Any explanations. Thanks. Drew

    
3. Oct 3, 2013 #2
   

   Judy Moderator Staff Member

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   Feb 5, 2009

   South Georgia

   Here's one article:
   
   http://www.thepoultrysite.com/publications/1/egg-quality-handbook/31/pale-yolks

    
5. Oct 3, 2013 #3
   

   Kelsie2290 True BYC Addict Premium Member

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   Feb 18, 2011

   Ohio

   Another article lists for individual hens, with what are probably not flock-wide or diet causes.
   http://scialert.net/fulltext/?doi=ajar.2011.1.16&org=12
   • Worms (Coutts and Wilson, 1990)
   • Any factor which inhibits liver function, subsequent lipids metabolism and deposition of pigment in the yolk. For example, mycotoxicosis caused by aflatoxin B1 (Zaghini et al., 2005)
   • Coccidiosis, although this is rare in adult hens

    

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