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• W4383497887 endingPage "102927" @default.
• W4383497887 startingPage "102927" @default.
• W4383497887 abstract "As new light sources are being developed for poultry houses, systematic investigations on how these influence behaviour and health in commercial broiler breeders are needed. Therefore, the aim of this study was to investigate the effects of two light sources (Evolys with UVA (LED) and Biolux 965 (CFL)) on the behaviour and health of two broiler breeder hybrids during the production period. Eight commercial breeder flocks (Ross 308 n=4, Hubbard JA757 n=4) with Evolys (Ross n=2, Hubbard n=2) or Biolux (Ross n=2, Hubbard n=2) were visited at 25 and 50 weeks of age to record behaviour and health. Behaviours included resting, locomotion, exploration, comfort, feather pecking, aggression, and mating, while health was recorded by a transect walk, scoring the number of birds observed with: feather loss (FL) on head, back/wings, breast, and tail, wounds on head, back/wings, and tail, dirty plumage, lameness, sickness and dead birds. The most common behaviours were resting, locomotion, comfort and exploration, and these were influenced by a three-way interaction between light source, hybrid and age. Light source did not affect behaviour in Hubbard birds at any age. In contrast, Ross birds housed in Evolys rested less at 50 weeks compared to Biolux (P=0.04) and showed more locomotion at 25 weeks in Biolux compared to Evolys (P<0.0001). Ross birds at 25 weeks explored more in Biolux compared to Evolys (P=0.0007). More comfort behaviour was performed in Evolys in 25-week-old Ross (P=0.002), but not at 50 weeks. These inconsistencies might be due to low sample size, which is a limitation in the study. The most common health indicators were FL on back/wings (mean 3.9%), wounds on back/wings (mean 0.22%), and FL head (mean 0.18%), with no effect of light source, hybrid or age on FL back/wings, breast or tail, but with increased FL on the head with increased age (P=0.0008). In conclusion, the behaviour of Ross birds seemed to be affected by light source, while the Hubbard birds were not. Light source had minor effects on the selected health indicators in the two hybrids." @default.
• W4383497887 created "2023-07-08" @default.
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• W4383497887 date "2023-10-01" @default.
• W4383497887 modified "2023-10-16" @default.
• W4383497887 title "Effect of light sources with and without UVA on selected behavior and health indicators in commercial broiler breeder flocks" @default.
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• W4383497887 doi "https://doi.org/10.1016/j.psj.2023.102927" @default.
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