<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:source xml:lang="eng">Veterinary Sciences</dc:source>
  <dc:publisher>MDPI</dc:publisher>
  <dc:subject xml:lang="eng">Quality-Of-Life</dc:subject>
  <dc:subject xml:lang="eng">Monochromatic Light</dc:subject>
  <dc:subject xml:lang="eng">Corticosterone Metabolites</dc:subject>
  <dc:subject xml:lang="eng">Wild Songbird</dc:subject>
  <dc:subject xml:lang="eng">Stress</dc:subject>
  <dc:subject xml:lang="eng">Dehydroepiandrosterone</dc:subject>
  <dc:subject xml:lang="eng">Plasma</dc:subject>
  <dc:subject xml:lang="eng">Birds</dc:subject>
  <dc:subject xml:lang="eng">Dhea</dc:subject>
  <dc:subject xml:lang="eng">Green</dc:subject>
  <dc:type xml:lang="eng">Text</dc:type>
  <dc:type xml:lang="eng">journal article</dc:type>
  <dc:rights>http://creativecommons.org/licenses/by/4.0/</dc:rights>
  <dc:date>2024</dc:date>
  <dc:creator>Livio Galosi</dc:creator>
  <dc:creator>Luca Todini</dc:creator>
  <dc:creator>Laura Menchetti</dc:creator>
  <dc:creator>Annaïs Carbajal</dc:creator>
  <dc:creator>Rupert Palme</dc:creator>
  <dc:creator>Nicola Ruggiero</dc:creator>
  <dc:creator>Roberto Falconi</dc:creator>
  <dc:creator>Alessandra Roncarati</dc:creator>
  <dc:type xml:lang="deu">Text</dc:type>
  <dc:type xml:lang="deu">Wissenschaftlicher Artikel</dc:type>
  <dc:format>application/pdf</dc:format>
  <dc:title xml:lang="eng">Effect of a Broiler-Specific Light Spectrum on Growth Performance and Adrenocortical Activity in Chickens: A Pilot Study on a Commercial Farm</dc:title>
  <dc:rights xml:lang="eng">© 2024 by the authors</dc:rights>
  <dc:rights xml:lang="eng">open access</dc:rights>
  <dc:description xml:lang="eng">This study evaluated the effect of a broiler-specific light spectrum on productive performance corticosterone (fCC) and androgen dehydroepiandrosterone (fDHEA) concentrations in feathers, and glucocorticoid (GCMs) and androgen (AMs) metabolites in droppings of broilers. Two groups of female Ross 308 broilers were reared under white LED (WL, n = 9000) and broiler-specific LED (BSL, n = 9000) lights. The body weight (BW) of 150 randomly selected animals/groups was measured weekly. Droppings and feathers were collected at the end of the cycle (29 days) from 20 animals/group. The BSL group showed higher final BW than WL (1407 ± 11 vs. 1341 ± 15 g, respectively; p&lt; 0.001) and higher indices of uniformity (76.8% vs. 61.2% animals in the 10% around the mean, respectively; p&lt; 0.001). No difference between groups was found in fCC and fDHEA concentrations or in the fCC-fDHEA, indicating similar long-term HPA axis activity during the cycle. A higher concentration of GCMs was found in the BSL group, indicating higher glucocorticoid secretion before sampling, with neither a difference in AMs nor in GCMs-AMs. Finally, there was a positive correlation between fCC and fDHEA and between GCMs and AMs (p&lt; 0.01). Our findings suggest that the use of broiler-specific light improved the productivity performances of chickens without long-term consequences on HPA activation. However, the results of this pilot study in a commercial farm setting must be interpreted with caution and need confirmation</dc:description>
  <dc:identifier>doi:10.3390/vetsci11120618</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:identifier>https://phaidra.vetmeduni.ac.at/o:3856</dc:identifier>
</oai_dc:dc>