对乳牛肠道甲排放预测模型的性能比较
Mimi Song1, Yongliang Ren1, Zenghui Li1
1College of Animal Science and Technology, Qingdao Agricultural University, No. 700 Changcheng Road, Chengyang District, Qingdao 266109, China.
Veterinary sciences
|November 26, 2025
概括
乳牛的肠道甲 (CH4) 排放有助于气候变化. 采用干物质摄入的21号模型为牛的CH4排放提供了最可靠的预测.
科学领域:
- 环境科学 环境科学
- 动物科学动物科学
- 农业科学 农业科学
背景情况:
- 乳牛的肠道甲 (CH4) 排放是人为温室气体的主要来源.
- 这些排放代表了动物的大量能量损失,影响了动物生产率和农场经济.
研究的目的:
- 批判性地评估现有模型的预测准确度,以估计乳牛的肠道甲 (CH4) 排放.
- 为了确定最可靠和最强大的模型来量化CH4排放在这个畜牧业.
主要方法:
- 从81项同行评审研究中的135种治疗方法构建了一个全面的数据库.
- 40个现有的乳牛CH4预测模型使用统计指标进行评估,包括RMSPE,CCC,RSR和错误分解 (ECT,ER,ED).
主要成果:
- 38型车表现出最低的RSR (0.71),但显示出大量的预测错误.
- 采用干物质摄入量 (DMI) 作为预测因素的21型模型表现出卓越的整体性能,RSR为0.83和CCC为0.58.
结论:
- 根据当前的数据,推21型作为估计乳牛肠道甲 (CH4) 排放的最稳健的选择.
- 未来的研究应该专注于扩大数据库和完善各种乳制品养殖系统的模型,以提高准确性和适用性.
关键词:
乳牛牛奶牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛干物质摄入量 干物质摄入量甲排放量 甲排放量模型评价模型评价预测模型 预测模型更多相关视频
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