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Behaviour, Welfare & Environment

Effect of day length on flock behavioural patterns and melatonin rhythms in broilers

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Pages 21-30 | Accepted 24 Aug 2013, Published online: 16 Apr 2014

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T. Shynkaruk, K. Buchynski & K. Schwean-Lardner. (2022) Lighting programme as a management tool for broilers raised without antibiotics – impact on productivity and welfare. British Poultry Science 63:6, pages 761-767.
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Sha Jiang, Yuechi Fu & Heng-wei Cheng. (2023) Daylight exposure and circadian clocks in broilers: part I—photoperiod effect on broiler behavior, skeletal health, and fear response. Poultry Science 102:12, pages 103162.
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C.L. Magee, H.A. Olanrewaju & J.L. Purswell. (2023) Effect of photoperiod on physiological parameters in broiler chicks from placement to 7 d of age. Journal of Applied Poultry Research 32:3, pages 100353.
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T. Shynkaruk, K. Long, C. LeBlanc & K. Schwean-Lardner. (2023) Impact of stocking density on the welfare and productivity of broiler chickens reared to 34 d of age. Journal of Applied Poultry Research 32:2, pages 100344.
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B.M. Remonato Franco, T. Shynkaruk, T. Crowe, B. Fancher, N. French, S. Gillingham & K. Schwean-Lardner. (2022) Light wavelength and its impact on broiler health. Poultry Science 101:12, pages 102178.
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C.L. Magee, H.A. Olanrewaju, J. Campbell & J.L. Purswell. (2022) Effect of photoperiod on live performance in broiler chicks from placement to 14-days-of-age. Journal of Applied Poultry Research 31:4, pages 100295.
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Bruna Remonato Franco, Marina L. Leis, Melody Wong, Tory Shynkaruk, Trever Crowe, Bryan Fancher, Nick French, Scot Gillingham & Karen Schwean-Lardner. (2022) Light Color and the Commercial Broiler: Effect on Ocular Health and Visual Acuity. Frontiers in Physiology 13.
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Yao-ming Cui, Jing Wang, Hai-jun Zhang, Guang-hai Qi & Shu-geng Wu. (2021) Effects of photoperiod on performance, ovarian morphology, reproductive hormone level, and hormone receptor mRNA expression in laying ducks. Poultry Science 100:4, pages 100979.
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Xiao Yang, Yang Zhao & George T. Tabler. (2020) Accuracy of Broiler Activity Index as Affected by Sampling Time Interval. Animals 10:6, pages 1102.
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Guoming LiBaoming LiZhengxiang ShiYang ZhaoQin TongYu Liu. (2020) Diurnal rhythms of group-housed layer pullets with free choices between light and dim environments. Canadian Journal of Animal Science 100:1, pages 37-46.
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Heitor Vieira Rios, Paulo Dabdab Waquil, Patrícia Soster de Carvalho & Tomas Norton. (2020) How Are Information Technologies Addressing Broiler Welfare? A Systematic Review Based on the Welfare Quality® Assessment. Sustainability 12:4, pages 1413.
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G. Fondevila, J.L. Archs, L. Cámara, A.F. de Juan & G.G. Mateos. (2020) The length of the feed restriction period affects eating behavior, growth performance, and the development of the proximal part of the gastrointestinal tract of young broilers. Poultry Science 99:2, pages 1010-1018.
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W.A. Hannah, T. Astatkie & B.M. Rathgeber. (2020) Hatch rate of laying hen strains provided a photoperiod during incubation. Animal 14:2, pages 353-359.
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L. Ross, M.D. Cressman, M.C. Cramer & M.D. Pairis-Garcia. (2019) Validation of alternative behavioral observation methods in young broiler chickens. Poultry Science 98:12, pages 6225-6231.
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T. Shynkaruk, H.L. Classen, T.G. Crowe & K. Schwean-Lardner. (2019) The impact of dark exposure on broiler feeding behavior and weight of gastrointestinal tract segments and contents. Poultry Science 98:6, pages 2448-2458.
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Inês Rodrigues & Mingan Choct. (2019) Feed intake pattern of broiler chickens under intermittent lighting: Do birds eat in the dark?. Animal Nutrition 5:2, pages 174-178.
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Yao-ming Cui, Jing Wang, Hai-jun Zhang, Jia Feng, Shu-Geng Wu & Guang-Hai Qi. (2019) Effect of photoperiod on growth performance and quality characteristics of tibia and femur in layer ducks during the pullet phase. Poultry Science 98:3, pages 1190-1201.
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Inês Rodrigues & Mingan Choct. (2018) The foregut and its manipulation via feeding practices in the chicken. Poultry Science 97:9, pages 3188-3206.
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Karen Schwean-Lardner. 2018. Advances in Poultry Welfare. Advances in Poultry Welfare 29 48 .
Y.Y. Sun, Y.L. Li, D.L. Li, C. Chen, H. Bai, F.G. Xue & J.L. Chen. (2017) Responses of broilers to the near-continuous lighting, constant 16-h lighting, and constant 16-h lighting with a 2-h night interruption. Livestock Science 206, pages 135-140.
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Marina L. Leis, Mary-Magdalene U. Dodd, Gregory Starrak, Catherine J. Vermette, Susantha Gomis, Bianca S. Bauer, Lynne S. Sandmeyer, Karen Schwean-Lardner, Henry L. Classen & Bruce H. Grahn. (2017) Effect of prolonged photoperiod on ocular tissues of domestic turkeys. Veterinary Ophthalmology 20:3, pages 232-241.
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Sefi J.A. Horesh, Jaim Sivan, Avi Rosenstrauch, Itay Tesler, A. Allan Degen & Michael Kam. (2017) Seasonal biotic and abiotic factors affecting hunting strategy in free-living Saharan sand vipers, Cerastes vipera. Behavioural Processes 135, pages 40-44.
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C. Vermette, K. Schwean-Lardner, S. Gomis, B.H. Grahn, T.G. Crowe & H.L. Classen. (2016) The impact of graded levels of day length on turkey health and behavior to 18 weeks of age. Poultry Science 95:6, pages 1223-1237.
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C. Vermette, K. Schwean-Lardner, S. Gomis, T.G. Crowe & H.L. Classen. (2016) The impact of graded levels of daylength on turkey productivity to eighteen weeks of age. Poultry Science 95:5, pages 985-996.
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Karen Schwean-Lardner, Catherine Vermette, Marina Leis & Henry Classen. (2016) Basing Turkey Lighting Programs on Broiler Research: A Good Idea? A Comparison of 18 Daylength Effects on Broiler and Turkey Welfare. Animals 6:5, pages 27.
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