• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Animal >Assessment of lighting needs by W-36 laying hens via preference test
【24h】

Assessment of lighting needs by W-36 laying hens via preference test

机译：W-36蛋鸡通过偏好测试评估照明需求

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Light intensity, spectrum and pattern may affect laying hen behaviors and production performance. However, requirements of these lighting parameters from the hens' standpoint are not fully understood. This study was conducted to investigate hens' needs for light intensity and circadian rhythm using a light tunnel with five identical compartments each at a different fluorescent light intensity of 1, 5, 15, 30 or 100 lux. The hens were able to move freely among the respective compartments. A group of four W-36 laying hens (23 to 30 weeks of age) were tested each time, and six groups or replicates were conducted. Behaviors of the hens were continuously recorded, yielding data on daily time spent, daily feed intake, daily feeding time, and eggs laid under each light intensity and daily inter-compartment movement. The results show that the hens generally spent more time in lower light intensities. Specifically, the hens spent 6.4 h (45.4%) at 5 lux, 3.0 h (22.1%) at 15 lux, 3.1 h (22.2%) at 30 lux and 1.5 h (10.3%) at 100 lux under light condition; and an accumulation of 10.0 h in darkness ( 1 lux) per day. The 10-h dark period was distributed intermittently throughout the day, averaging 25.0 +/- 0.4 min per hour. This hourly light-dark rhythm differs from the typical commercial practice of providing continuous dark period for certain part of the day (e.g. 8 h at night). Distributions of daily feed intake (87.3 g/hen) among the different light conditions mirrored the trend of time spent in the respective light intensity, that is, highest at 5 lux (28.4 g/hen, 32.5% daily total) and lowest at 100 lux (5.8 g/hen, 6.7%). Hen-day egg production rate was 96.0%. Most of the eggs were laid in 1 lux (61.9% of total) which was significantly higher than under other light intensities (P0.05). Findings from this study offer insights into preference of fluorescent light intensity by the laying hens. Further studies to assess or verify welfare and performance responses of the hens to the preferred lighting conditions and rhythm over extended periods are recommended.
机译：光强度，光谱和图案可能会影响蛋鸡的行为和生产性能。然而，从母鸡的角度来看，这些照明参数的要求还没有被完全理解。这项研究的目的是使用具有五个相同隔室的光隧道，以不同的荧光强度<1、5、15、30或100 lux来研究母鸡对光强度和昼夜节律的需求。母鸡能够在各个隔间之间自由移动。每次测试一组四只W-36产蛋鸡（23至30周龄），并进行六组或重复实验。连续记录母鸡的行为，得出有关每天所花费的时间，每天的采食量，每天的采食时间以及在每种光照强度下以及在鸡舍间的运动下产卵的数据。结果表明，母鸡通常在较低的光照强度下花费更多的时间。具体而言，在光照条件下，母鸡在5勒克斯下花费6.4小时（45.4％），在15勒克斯下花费3.0小时（22.1％），在30勒克斯下花费3.1小时（22.2％），在100勒克斯下花费1.5小时（10.3％）;每天在黑暗中（<1 lux）累积10.0 h。全天间歇性地分布10小时的黑暗时段，平均每小时25.0 +/- 0.4分钟。这种每小时暗夜的节奏不同于通常在一天的某些时段（例如晚上8小时）提供连续暗夜的商业惯例。在不同光照条件下的日采食量分布（87.3克/只鸡）反映了各自光强所花费时间的趋势，即最高摄氏5勒克司（28.4克/只母鸡，每日总量32.5％），最低摄氏100度勒克司（5.8 g / hen，6.7％）。母鸡产蛋率为96.0％。大部分卵以小于1 lux（占总数的61.9％）的速度产下，明显高于其他光照强度下的产卵率（P <0.05）。这项研究的发现为蛋鸡对荧光强度的偏好提供了见解。建议进行进一步的研究，以评估或验证母鸡在较长的光照条件和节律下的福利和性能反应。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号