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. 2016 Jan 14;6:19291. doi: 10.1038/srep19291

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Copyright © 2016, Macmillan Publishers Limited

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When the birds grown to 22 weeks, most of them started to produce eggs. We measured the egg production of each light-treated group daily, then calculated lay rate of each light treated-group. Significant differences observed between red-treated group and yellow-treated group during 23–29 week. Statistics statement was not presented for the concern of clarity.