• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Animal environment and welfare >Assessment of Lighting Needs by Laying Hens via Preference Test
【24h】

Assessment of Lighting Needs by Laying Hens via Preference Test

机译：通过偏好测试产蛋鸡评估照明需求

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

This study was conducted to investigate hen's needs for light intensity and circadian rhythm using a light tunnel with five identical compartments each at a different fluorescent light intensity of ＜t, 5, 15, 30 or 100 lux.The hens were able to move freely among the compartments.A group of four W-36 laying hens (23-30 weeks of age) was tested each time,and six groups or repetitions were conducted.Hen behaviors were continuously recorded, which yielded the data on time spent, feed intake, feeding time, and eggs laid at each light intensity and inter-compartment movement.The results show that 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 spent 10.0 h under dark (＜1 lux).Daily feed intake was 87.3 g d-1 and distributed as 24.8 g hen-1 d-1 (28.4％) at ＜1 lux, 28.4 g hen-1 d-1 (32.5％) at 5 lux, 13.8 g hen-1 d-1 (15.8％) at 15 lux,14.5 g hen-1 d1 (16.6％) at 30 lux, and 5.8 g hen-1 d-1 (6.7％) at 100 lux, respectively.Hen-day egg production rate was 96.0％; and most of the eggs were laid at ＜1 lux (61.9％ of total) which was significantly different from other light intensities (P ＜ 0.05).The overall photoperiod was10 h darkness (＜1 lux) and 14 h light or 14L∶ 10D, with a fairly constant hourly dark time of25.0 ± 0.4 min throughout the day.
机译：这项研究是通过使用一个具有五个相同隔间的光洞来研究母鸡对光强度和昼夜节律的需要，每个隔间的荧光强度分别小于t，5、15、30或100 lux。这些母鸡能够自由移动每次对四只W-36产蛋鸡（23-30周龄）进行测试，并进行六组或重复实验，连续记录母鸡的行为，从而得出花费时间，采食量，结果表明，母鸡在5勒克斯下花了6.4 h（45.4％），在5勒克斯下花了3.0 h（22.1％），在15勒克斯下花了3.1 h（22.2％）。 30 lux，光条件下100 lux时1.5 h（10.3％）；黑暗条件下（＜1 lux）花费10.0 h。日采食量为87.3 g d-1，分配为24.8 g hen-1 d-1（ ＜1 lux时为28.4％），5 lux时为28.4 g hen-1 d-1（32.5％），15 lux时为13.8 g hen-1 d-1（15.8％），14.5 g hen-1 d1（16.6％） 30 lux时为5.8 g hen-1 d-1（6.7％）母鸡一天的产蛋率为96.0％；大部分卵以＜1 lux（占总数的61.9％）下蛋，与其他光照强度（P ＜0.05）有显着差异。总光周期为10 h黑暗（＜1 lux）和14 h光照或14L∶10D ，每天的黑夜时间相当恒定，为25.0±0.4分钟。

著录项

  • 来源
    《Animal environment and welfare》|2015年|241-248|共8页
  • 会议地点 Chongqing(CN)
  • 作者

    He Ma; Hongwei Xin; Yang Zhao; Baoming Li; Timothy A.Shepherd; Ignacio Alvarez;

  • 作者单位

    Key Laboratory of the Ministry of Agriculture for Agricultural Engineering in Structure and Environment,China Agricultural University, Beijing 100083, China;

    Department of Agricultural and Biosystems Engineering, Iowa State University,Ames, IA 50011-3310, USA;

    Department of Agricultural and Biosystems Engineering, Iowa State University,Ames, IA 50011-3310, USA;

    Department of Agricultural and Biosystems Engineering, Iowa State University,Ames, IA 50011-3310, USA;

    Key Laboratory of the Ministry of Agriculture for Agricultural Engineering in Structure and Environment,China Agricultural University, Beijing 100083, China;

    Department of Agricultural and Biosystems Engineering, Iowa State University,Ames, IA 50011-3310, USA;

    Department of Statistics, Iowa State University, Ames, IA 50011-3310, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 家畜;
  • 关键词

    Light intensity; laying hens; light preference; behavior; circadian rhythm;

    机译：光强度;蛋鸡;光偏爱;行为;昼夜节律;

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