, Volume 44, Issue 5, pp 437–447 | Cite as

Body Compositional Changes and Growth Alteration in Chicks from Hens Fed Conjugated Linoleic Acid

  • Vanessa A. Leone
  • Sharon P. Worzalla
  • Mark E. CookEmail author
Original Article


Effects of feeding conjugated linoleic acid (CLA) to hens on progeny chick development and composition at hatch (NHC) and three weeks of age (TWC) were assessed. CLA (0 or 0.5%, composed of mixed isomers of cis-9,trans-11 or trans-10,cis-12-CLA) was fed to hens with either safflower (SO) or olive oil (OO) (3 or 3.5%) to assure successful hatch for 2 weeks prior to collection for incubation. Maternal CLA feeding had no effect on hatchability, but improved egg fertility (p < 0.05). Maternal feeding of CLA with SO increased 21 day-old progeny growth, while CLA with OO decreased growth (oil*CLA, p < 0.05). In 25 day-old chicks (TWC), but not NHC, maternal CLA decreased the proportion of total body water (p < 0.05) and increased body ash (p < 0.05). While monounsaturated fatty acids were decreased and saturated fatty acids increased in eggs and NHC from hens fed CLA, no differences in fatty acid composition were observed in chicks at 25 days of age from hens fed CLA. Maternal CLA feeding resulted in the presence of c9,t11 and t10,c12-CLA in NHC, but only c9,t11 in the TWC. In conclusion, hens fed CLA led to improved fertility and altered body composition at 3 weeks of age.


Conjugated linoleic acid (CLA) Fatty acid modifications Saturated fatty acids Monounsaturated fatty acids Desaturases Dietary fat Lipid absorption 



The authors express their gratitude to S&R Farms (Whitewater, WI) for providing laying hens and to the staff at the University of Wisconsin-Madison Poultry Research Lab (Dawn Irish, George Bradley, and Angel Gutierrez) for support of research. The authors would like to thank Shane Huebner for his assistance in fatty acid analysis, Debra Schneider for her assistance in body composition analysis, and David Trott for assistance in certain aspects of this project. Research was supported through royalties received from the Wisconsin Alumni Research Foundation (WARF), as one of the authors (MEC) is an inventor on CLA patents assigned to WARF.


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Copyright information

© AOCS 2009

Authors and Affiliations

  • Vanessa A. Leone
    • 1
  • Sharon P. Worzalla
    • 1
  • Mark E. Cook
    • 1
    Email author
  1. 1.Department of Animal SciencesUniversity of Wisconsin-MadisonMadisonUSA

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