Effects of monochromatic lights on the growth performance, carcass characteristics, eyeball development, oxidation resistance, and cecal bacteria of Pekin ducks

Hua, Dengke; Xue, Fuguang; Xin, Hairui; Zhao, Yiguang; Wang, Yue; Xiong, Benhai

doi:10.5713/ajas.20.0215

Cited by 5 publications

(6 citation statements)

References 30 publications

(39 reference statements)

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“…Duck d 35 BW and FCR were not affected by lighting treatment in the current study. These results are similar to those reported in a previous study which hypothesized duck performance may not be affected by colored LEDs at low light intensities such as the 5 lux used in the reported study and the 5 gallilux used in the current study ( Hua et al., 2021 ). Two other reports indicating differences in duck BW maintained a light intensity of 20 lux ( Hassan et al., 2017 ) and 25 lux ( Campbell et al., 2015 ) respectively.…”

Section: Discussionsupporting

confidence: 92%

“…In the current investigation, eye weight was greater in WHITE and GREEN ducks than in RED and BLUE ducks. These results are not aligned with Hua et al. (2021) , which reported increased eyeball length (front-to-back) and width (side-to-side) in ducks reared under longer wavelengths such as yellow, red, and green light compared to blue light, and eye weight was not affected.…”

Section: Discussioncontrasting

confidence: 84%

“…(2013) observed reduced duck fear responses under blue and green LED lighting, while our previous study indicated ducks reared under white/blue LED bulbs had a greater fear response than those reared under white/red LED bulbs ( House et al., 2021 ). Hua et al. (2021) reported a smaller back-to-front eye diameter for Pekin ducks reared under blue or white LED bulbs compared to ducks reared under red, yellow, or green LED bulbs, however no other studies have investigated light color-dependent eye development changes in Pekin ducks.…”

Section: Introductionmentioning

confidence: 98%

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Experimental monochromatic light-emitting diode fixture impacts Pekin duck stress and eye development

House¹,

Sobotik²,

Nelson³

et al. 2021

Poultry Science

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Poultry color perception of artificial light-emitting diode ( LED ) lighting mediates bird physiology and behavior; however, very limited research has focused on how changes in LED light color affect these same parameters in Pekin ducks. Therefore, the objective of this investigation was to determine how four LED bulbs emitting various portions of the visible light spectrum – monochromatic blue ( BLUE ), monochromatic green ( GREEN ), monochromatic red ( RED ), and white ( WHITE ) - impact the stress, fear responses, eye development, and growth of 768 straight run Pekin ducks. Elevated plasma corticosterone concentration and heterophil to lymphocyte ratio was observed in BLUE and RED ducks compared to WHITE and GREEN ducks ( P = 0.005 and P = 0.001, respectively), and asymmetry scores were highest in BLUE ducks ( P < 0.001), indicating BLUE and RED lighting increase the stress susceptibility of Pekin ducks. Eye weight was lowest in BLUE and RED ducks compared to GREEN and WHITE ducks ( P < 0.01). No differences were observed in d 35 body weight, FCR, gait score, or fear response parameters ( P > 0.05). These results indicate BLUE and RED lighting may not be adequate for Pekin duck growout, and Pekin ducks may require artificial light sources containing a broad range of wavelengths, as seen with WHITE and GREEN lights, rather than lights containing more concentrated ranges such as in RED and BLUE lights, but further investigation is needed to understand how eye weight affects duck light perception and welfare. The current findings emphasize that although Pekin ducks and chickens are both sensitive to light color, species-specific nuances in light perception may cause distinct differences in Pekin duck versus broiler physiological responses and must be considered when selecting artificial light color in Pekin duck growout facilities.

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Section: Discussionsupporting

confidence: 92%

Section: Discussioncontrasting

confidence: 84%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Experimental monochromatic light-emitting diode fixture impacts Pekin duck stress and eye development

House¹,

Sobotik²,

Nelson³

et al. 2021

Poultry Science

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“…Meanwhile, Hassan et al (2016) reported higher body weights for ducks raised in blue and green than yellow and white light. Other studies have found no relationship between bodyweights and light color ( Hua et al, 2021 ; House et al, 2021b ). Results regarding the feed conversion ratio ( FCR ) of ducks housed under different light colors have been equally conflicting, with two studies finding no differences ( Hassan et al, 2016 ; House et al, 2021b ) and another reporting improved FCR for ducks housed under blue and green light vs. other colors ( Kim et al, 2014 ).…”

Section: Duck Welfare In Relation To the Housing Environmentmentioning

confidence: 89%

Setting research driven duck-welfare standards: a systematic review of Pekin duck welfare research

Makagon

Riber

2022

Poultry Science

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Globally, the production of Pekin ducks for meat and eggs is considerable, with an estimated >200 million ducks slaughtered yearly for their meat in the United States and the European Union alone. However, despite the size of the Pekin duck industries, there is a lack of research-based guidance regarding the welfare of the ducks. The purpose of this systematic review is to examine and summarize available scientific literature related to the welfare of Pekin ducks raised on commercial farms for meat and eggs. Specifically, we aimed to identify topics where sufficient literature exists to support best-practice duck welfare recommendations, as well as further research needs. The literature search targeted original research papers and review articles published in English. Six pre-establish inclusion/exclusion criteria were applied, yielding 63 publications. We summarized their content based their main topic of focus. For all original studies, we additionally recorded the country where the study was executed, scale of the project (commercial or experimental barns), general information about the housing system and management (waterers, flooring, ventilation, group size, and space allowance), and the types of outcome variables collected. We begin with an overview of key publication trends. We then synthesize and discuss welfare outcomes related to key housing/management decisions: bathing water, flooring and litter, stocking density and space availability, ventilation/air quality, lighting, outdoor access, and for egg laying birds the availability of nest boxes. Throughout, we outline specific research gaps, as well as overarching research needs.

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“…However, the effect of different light wavelengths on the intestinal microbiome composition is also related to species and the location of the digestive tract. In Peking ducks, when imposing low-light intensity blue or green monochromatic light, the amount of Firmicutes increased but the amount of Bacteroidetes decreased in the cecum, compared to white light [ 32 ].…”

Section: Discussionmentioning

confidence: 99%

Blue Light Alters the Composition of the Jejunal Microbiota and Promotes the Development of the Small Intestine by Reducing Oxidative Stress

et al. 2022

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Environmental light has an important impact on the growth, development and oxidative stress of chicks. Thus, we investigated the effects of colored lights on microbes and explored the molecular mechanism by which external color light information alters the gut microbiota and induces the cell response in vivo. We raised 96 chicks under 400–700 nm white (WL), 660 nm red (RL), 560 nm green (GL) or 480 nm blue light (BL) for 42 days. We used 16S rRNA high-throughput pyrosequencing and gas chromatography to explore the effect of different monochromatic lights on the jejunal microbiota. We used qRT-PCR, western blotting, immunohistochemistry and Elisa to determine the effect of different monochromatic lights on small intestine development and oxidative stress levels. With consistency in the upregulation of antioxidant enzyme ability and anti-inflammatory cytokine level, the 16S rRNA and gas chromatography results showed that BL significantly increased the diversity and richness of the jejunal microbiota and improved the relative abundances of Faecalibacterium, Ruminiclostridium_9 and metabolite butyrate content compared with WL, RL and GL (p < 0.05). In addition, we observed that BL increased the goblet cell numbers, PCNA cell numbers, villus-length-to-crypt-depth (V/C) ratios, ZO-1, Occludin, and Claudin-1 protein expression; decreased permeability; and enhanced the digestion and absorption capacity in the jejunum (p < 0.05). In the in vitro experiment, we found that butyrate promoted chick small intestinal epithelial cell (CIEC) proliferation and inhibited apoptosis (p < 0.05). These responses were abrogated by the Gi inhibitor, PI3K inhibitor or AKT inhibitor, but were mimicked by GPR43 agonists or the GSK-3β inhibitor (p < 0.05). Overall, these findings suggested that BL increased the relative abundance of Faecalibacterium, Ruminiclostridium_9 and butyrate production. Butyrate may act as one of the signals to mediate blue-light-induced small intestinal development and mucosal barrier integrity enhancement and promote cell proliferation via the GPR43/Gi/PI3K/AKT/p-GSK-3β/β-catenin pathway.

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Effects of monochromatic lights on the growth performance, carcass characteristics, eyeball development, oxidation resistance, and cecal bacteria of Pekin ducks

Cited by 5 publications

References 30 publications

Experimental monochromatic light-emitting diode fixture impacts Pekin duck stress and eye development

Experimental monochromatic light-emitting diode fixture impacts Pekin duck stress and eye development

Setting research driven duck-welfare standards: a systematic review of Pekin duck welfare research

Blue Light Alters the Composition of the Jejunal Microbiota and Promotes the Development of the Small Intestine by Reducing Oxidative Stress

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