重新定义主导地位计算:增加的竞争使乳牛的主导地位层次平坦化
Kehan Sheng1, Borbala Foris1, Joseph Krahn1
1Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada, V6T 1Z4.
Journal of dairy science
|June 2, 2024
概括
竞争水平显著改变了奶牛的统治层次. 高竞争降低了等级的度,因为下属的奶牛获得了更多的成功,挑战了传统的优势评估.
科学领域:
- 动物行为和行为学.
- 动物福利和动物管理
- 群居性物种的社会动态
背景情况:
- 在社会动物中,主导层次对于资源获取和冲突缓解至关重要.
- 评估乳牛主导地位的传统方法依赖于高竞争期间在料堆中的激进相互作用.
- 竞争强度对主导地位等级评估准确性的影响尚未完全理解.
研究的目的:
- 调查不同程度的竞争如何影响哺乳乳乳母牛中主导地位层次结构.
- 为了确定竞争强度是否影响激进相互作用的结果和由此产生的等级.
主要方法:
- 在10个月的时间里,持续监测159头哺乳乳奶牛的动态群体中的30个料箱的替代行为.
- 计算料占用水平 (13%至100%),以量化每次相互作用时的竞争强度.
- 基于不同竞争水平检测到的替代行为,使用Elo评级构建主导层次结构.
主要成果:
- 层次的度随着料占用率的增加而显著降低 (2.41 × 10-3 / 1%的上升).
- 与竞争相比,相互替代的二的比例增加了 (每1%增加0.13%).
- 在竞争激烈的情况下,占主导地位的个人在赢得率上呈现出比较大的下降,随着占用率的增加,这种效应会放大.
结论:
- 推断的支配地位层次与竞争水平有很大差异,高竞争水平会使层次层次平坦化.
- 在竞争加剧期间,增加资源估值可能会在确定竞争成功时取代内在的优势属性.
- 研究人员应该根据背景区分激进的相互作用,并避免仅依靠高竞争时期来构建层次结构.
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