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首页> 外文期刊>Animal Reproduction Science >Effects of monochromatic light sources on sex hormone levels in serum and on semen quality of ganders
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Effects of monochromatic light sources on sex hormone levels in serum and on semen quality of ganders

机译：单色光源对血清性激素水平和甘精精液质量的影响

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Light is an essential external factor influencing various physiological processes, including reproductive performance, in birds. Although several attempts have been made to understand the effect of light on poultry production, the effect of light of a particular wavelength (color) on the reproductive function in geese remains unclear. This study evaluated the effect of various monochromatic light sources on the levels of sex hormone and on semen quality of ganders. Of 30 male White Roman geese in their third reproductive season (average age =3 years), 27 were divided into three groups receiving monochromatic white or red or blue lights. The birds were kept in an environmentally controlled house with a lighting photoperiod of 7L:17D for six weeks as the adaptation period. The photoperiod was subsequently changed to 9L:15D and maintained for 24 weeks. Three ganders at the beginning of the study and three from each group at the end of the adjusting period and the 20th and 30th week of the study period were sacrificed, and their testes and blood samples were collected for determining the sex hormone levels. Semen samples were collected for determining semen quality parameters, including the semen collection index, sperm concentration, semen volume, sperm motility, sperm viability, sperm morphology, and semen quality factor. The results showed that the testosterone and estradiol levels remained unchanged in all three groups at all time points. The ratio of testosterone to estradiol of ganders exposed to white light was significantly higher than that of ganders exposed to red light at the 30th week (P0.05). Semen collection index and sperm viability of ganders exposed to blue light were significantly the lowest (P0.05). Moreover, sperm motility, sperm viability, and percentage of morphologically normal spermatozoa of ganders in white light were the highest (P0.05). In conclusion, the results of this study suggested that artificial illumination with white light may maintain a better semen quality than that with red or blue lights in ganders. (C) 2016 Elsevier B.V. All rights reserved.
机译：光是影响鸟类各种生理过程（包括生殖性能）的重要外部因素。尽管已经进行了多种尝试来理解光对家禽生产的影响，但是仍不清楚特定波长（颜色）的光对鹅生殖功能的影响。这项研究评估了各种单色光源对性激素水平和雄性精液质量的影响。在第三繁殖季节（平均年龄= 3岁）的30只雄性白罗马鹅中，有27只被分为三组，分别接受单色的白光或红光或蓝光。将这些鸟在适应环境的房间中饲养，光照周期为7L：17D，环境照度为6周。随后将光周期改变为9L：15D，并保持24周。在研究开始时杀死三只雄性秃and，在调整期结束时以及研究周期的第20周和第30周杀死三只雄性秃s，并收集其睾丸和血液样本以确定性激素水平。收集精液样品以确定精液质量参数，包括精液收集指数，精子浓度，精液量，精子活力，精子活力，精子形态和精子质量因子。结果显示，在所有时间点，所有三组的睾丸激素和雌二醇水平均保持不变。在第30周，暴露于白光的甘ander的睾丸激素与雌二醇的比率显着高于暴露于红光的甘ander的睾丸激素与雌二醇的比例（P <0.05）。暴露于蓝光的甘丹精液收集指数和精子活力最低（P <0.05）。此外，在白光下，雄性精子的活力，精子活力和形态正常的精子百分比最高（P <0.05）。总而言之，这项研究的结果表明，用白光人工照明的雄性精液质量可能优于用红光或蓝光人工照明的精液质量。 （C）2016 Elsevier B.V.保留所有权利。

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