Journal Pre-proof The effect of selected in ovo green light photostimulation periods on post-hatch broiler growth and somatotropic axis activity L. Dishon , N Avital-Cohen , S Zaguri , J Bartman , R Heiblum , S Druyan , TE Porter , M Gumu lka , I Rozenboim PII: S0032-5791(21)00263-7 DOI: https://doi.org/10.1016/j.psj.2021.101229 Reference: PSJ 101229 To appear in: Poultry Science Received date: 8 January 2021 Accepted date: 18 April 2021 Please cite this article as: L. Dishon , N Avital-Cohen , S Zaguri , J Bartman , R Heiblum , S Druyan , TE Porter , M Gumu lka , I Rozenboim , The effect of selected in ovo green light photo- stimulation periods on post-hatch broiler growth and somatotropic axis activity, Poultry Science (2021), doi: https://doi.org/10.1016/j.psj.2021.101229 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2021 Published by Elsevier Inc. on behalf of Poultry Science Association Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)