光强度,光谱和光均性对奶牛通过障碍路径导航的能力的影响
S Lindkvist1, S Ferneborg2, K Ståhlberg1
1Department of Animal Nutrition and Management, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden.
Journal of dairy science
|August 29, 2023
概括
乳牛的夜间照明仍然没有得到充分的研究. 这项研究发现,虽然黑暗不会影响牛的导航,但不均的红光会减缓它们的步行速度,这表明光线的均性是安全运动的关键.
科学领域:
- 动物科学动物科学
- 农业工程 农业工程
- 环境科学 环境科学
背景情况:
- 对于奶牛的夜间照明建议在全球范围内有所不同,有些人主张持续照明,有些人则主张黑暗以休息.
- 商业实践建议在夜间放牛场照明时使用红灯,以帮助监督,使动物受到最小的干扰.
- 关于光强度,光谱和均性如何影响牛在室内环境中导航的能力,目前的研究有限.
研究的目的:
- 研究不同夜间照明条件对奶牛在障碍路线上航行能力的影响.
- 为了确定光线强度,均性和颜色是否会影响牛的运动和行为.
主要方法:
- 一项转换研究,涉及12只怀孕的,不哺乳的奶牛在障碍路线上航行.
- 测试了14种光疗法,强度不同 (<0.01到4.49μmol m−2 s−1),均性不同 (高/低),颜色不同 (白/红).
- 牛的步行速度和步伐率是使用一个通用的混合模型来分析的,光条件的特征是照度,光子流量密度,光谱组成和均性.
主要成果:
- 牛的步行速度在中等强度,不均的红光下相比于均的白光或红光时显著减慢.
- 走路速度和步伐率不受完全黑暗的影响.
- 没有观察到照明条件对不同行为发生的几率有显著影响.
结论:
- 奶牛可以在黑暗中在障碍路线上驾驶,而不会影响速度或步伐.
- 不均的光分布,特别是中等强度的红光,会对牛的移动速度产生负面影响.
- 夜间照明对于牛的导航可能不是必不可少的,但统一性对于保持运动效率至关重要.
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