Astuti , P.; Al Fajar, B.; Mauludin, M.; Hana, A.; Airin, C. M.; Sarmin, S.; Harimurti, S. Corticosterone Levels, Heterophil Lymphocyte Ratios and Growth Rates in Lohmann Indian River Chickens Raised under Monochromatic Blue Light. Int. J. Poult. Sci. 2015, 14 (12), 639–643. https://doi.org/10.3923/ijps.2015.639.643.