The effect of supplementary ultraviolet wavelengths on the performance of broiler chickens.
The effect of supplementary ultraviolet wavelengths on the performance of broiler chickens.
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DOI：
10.1016/j.psj.2020.07.018
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发表时间：
2020-11
期刊：
影响因子：
4.4
通讯作者：
Asher L
中科院分区：
文献类型：
--
作者：
James C;Wiseman J;Asher L
已证明光环境的质量（例如光的光谱组成）会影响肉鸡的生长和性能。UVA光对肉鸡是可见的，而UVB波长促进内源性维生素D的合成，这可以支持它们的快速发育。本研究旨在探讨紫外线A和紫外线B波长对肉鸡生产性能的影响。 一日龄Ross 308雏鸡（n = 638），饲养至33 kg/m2的目标放养密度，被随机分配至3种光照处理之一：A）白色发光二极管（LED）和补充UVA LED光照（18小时光周期）; B）白色LED，具有补充UVA和UVB荧光照明，在鸟水平提供30 μW/cm 2 UVB（在总光周期中开灯8小时以避免UVB过度照射）;和C）白色LED对照组，代表农场条件（18小时光周期）。 记录死亡率，并分别在8、15、22、27和34日龄时对肉鸡称重。采用广义线性模型和非线性混合效应模型（Gompertz曲线）拟合了紫外线波长对肉鸡死亡率和生长性能的影响。 紫外线没有影响肉鸡的胸或腿重，但与死亡率，生长和终重的差异。肉鸡提供的UVA为整个18小时的光周期有较慢的初始增长比对照组肉鸡和死亡率降低。补充UVA + UVB饲养8 h的雄性肉鸡的结果表明，它们可以比对照组更快地达到肥育体重，这支持UVA + B改善雄性生长性能的潜力。 结果表明，补充UVA + UVB波长的提供可以提高雄性肉鸡的生产性能。仅UVA治疗的死亡率降低可能需要进一步研究。在家禽照明制度中纳入紫外线波长代表了一个有前途的进一步研究领域。
Qualities of the light environment, such as the spectral composition of light, have been shown to impact growth and performance of broiler chickens. UVA light is visible to broiler chickens, whereas UVB wavelengths promote endogenous vitamin D synthesis, which could support their rapid development. The aim of the current study was to investigate the impacts of supplementary UVA and UVB wavelengths on performance indicators of broiler chickens. Day-old Ross 308 chicks (n = 638), reared to a target stocking density of 33 kg/m2, were randomly assigned to 1 of 3 lighting treatments: A) White light emitting diode (LED) and supplementary UVA LED lighting (18-h photoperiod); B) White LED with supplementary UVA and UVB fluorescent lighting providing 30 μW/cm2 UVB at bird level (lights on for 8 h of the total photoperiod to avoid overexposure of UVB); and C) White LED control group, representative of farm conditions (18-h photoperiod). Mortality was recorded, and broiler chickens were individually weighed at 8, 15, 22, 27, and 34 D of age. Generalized linear models and nonlinear mixed effects models (Gompertz curve) were fitted to determine the effects of UV wavelengths on broiler mortality and growth performance. UV did not impact breast or leg weight of broiler chickens but was associated with differences in mortality, growth, and end weight. Broiler chickens provided with UVA for the full 18-h photoperiod had slower initial growth than control broilers and a reduction in mortality. Results from male broilers reared with supplementary UVA + UVB for 8 h indicated they could reach finishing weights sooner than controls, which supports the potential for UVA + B to improve the growth performance of males. Results suggest that the provision of supplementary UVA + UVB wavelengths may improve the performance of male broiler chickens. The reduction in mortality in the UVA only treatment may warrant further investigation. The inclusion of UV wavelengths within poultry lighting regimes represents a promising area of further study.
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影响因子：
4.4
作者：
Olanrewaju, H. A.;Miller, W. W.;Branton, S. L.
通讯作者：
Branton, S. L.
影响因子：
2
作者：
Alvino, G. M.;Blatchford, R. A.;Mench, J. A.
通讯作者：
Mench, J. A.
影响因子：
2
作者：
Kristensen, H. H.;Perry, G. C.;Wathes, C. M.
通讯作者：
Wathes, C. M.
DOI：
10.1111/j.1439-0442.1998.tb00804.x
发表时间：
1998-03-01
期刊：
JOURNAL OF VETERINARY MEDICINE SERIES A-PHYSIOLOGY PATHOLOGY CLINICAL MEDICINE
影响因子：
--
作者：
Olkowski, AA;Classen, HL
通讯作者：
Classen, HL
影响因子：
1.9
作者：
Fritts, CA;Waldroup, PW
通讯作者：
Waldroup, PW