多源单色光对肉鸡生长及生理的影响

     现代家养动物普遍使用人工光照，然而人工光照对其产生的影响缺乏定量试验研究。环境控制法是一种行之有效的方法来评估人工光照的影响。鸡只是研究光环境的最佳动物模型，本文通过特制双波长LED，评估不同配比蓝-绿混合光对鸡只生长及生理的影响。研究结果表明，混合光对鸡只的影响随着蓝-绿的配比而改变。低含量和中含量蓝光抑制鸡只生长，高含量蓝光促进鸡只生长。蓝光比例与鸡只体重正相关。相关分析表明，高含量蓝光通过增加鸡只饮食来增加体重。高含量蓝光提高鸡只血糖含量。同时发现，血糖含量与体重（R2=0.6406，P=0.0001）和摄食量（R2=0.784，P=0.0001）显著正相关。以上结果表明，光谱成分显著影响鸡只生长及生理状态。光谱成分含量连续性变化引起鸡只生长及生理状态的同步性变化。

     Despite the overwhelming use of artificial light on captive animals, its effect on those animals has rarely been studied experimentally. Housing animals in controlled light conditions is useful for assessing the effects of light. The chicken is one of the best-studied animals in artificial light experiments, and here, we evaluate the effect of polychromatic light with various green and blue components on the growth and physiology in chicks. The results indicate that green-blue dual light has two side-effects on chick body mass, depending on the various green to blue ratios. Green-blue dual light with depleted and medium blue component decreased body mass, whereas enriched blue component promoted body mass in chicks compared with monochromatic green- or blue spectra-treated chicks. Moreover, progressive changes in the green to blue ratios of green-blue dual light could give rise to consistent progressive changes in body mass, as suggested by polychromatic light with higher blue component resulting in higher body mass. Correlation analysis confirmed that food intake was positively correlated with final body mass in chicks (R2=0.7664, P=0.0001), suggesting that increased food intake contributed to the increased body mass in chicks exposed to higher blue component. We also found that chicks exposed to higher blue component exhibited higher blood glucose

     levels. Furthermore, the glucose level was positively related to the final body mass (R2=0.6406, P=0.0001) and food intake (R2=0.784, P=0.0001). These results demonstrate that spectral composition plays a crucial role in affecting growth and physiology in chicks. Moreover, consistent changes in spectral components might cause the synchronous response of growth and physiology.

原文出处：Artificial Polychromatic Light Affects Growth and Physiology in Chicks, PLoS ONE 2014(12), e113595. 全文索取请联系：浙江大学泮进明，panhouse@zju.edu.cn