Stress also plays a key role in the pathogenesis of sudden death syndrome (Olkowski et al., 2008),and as UVA lighting has been found to reduce baseline stress levels in young chicks, increase exploratory behaviors (Maddocks et al., 2001), and reduce fearfulness(James et al. 2018), it is possible the reduced mortalityin this lighting treatment could have been facilitated through reduced stress levels.
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