影响肠道排放甲的因素和乳牛的预测模型
Andrea Beltrani Donadia1, Rodrigo Nazaré Santos Torres1, Henrique Melo da Silva1
1Dairy Cattle Research Laboratory, Universidade Federal de Mato Grosso, Campus Sinop, Sinop 78555-267, MG, Brazil.
Animals : an open access journal from MDPI
|October 27, 2023
概括
提高奶牛的生产率,特别是料转换效率,可以显著降低肠道甲排放强度. 优先考虑料转换是减轻牛类温室气体贡献的关键.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 动物科学动物科学
背景情况:
- 乳牛的肠道甲排放是温室气体的主要来源.
- 对肠道甲排放的准确预测模型对于缓解策略至关重要.
研究的目的:
- 分析肠道甲排放产量和料转换对排放强度的影响.
- 开发和比较乳牛肠道甲排放的预测模型.
- 评估影响乳制品系统中甲排放强度的因素.
主要方法:
- 建立一个大规模的,跨大陆的乳牛实验数据集.
- 开发六种用于预测每日肠道甲排放的新型模型.
- 对已开发的模型与43个现有文献模型进行比较分析.
主要成果:
- 料转换是肠道甲排放强度的重要驱动因素,而不是排放产量.
- 增加牛奶产量减少了排放强度,主要是通过加强料转换.
- 与大多数文献模型相比,新开发的模型显示出更高的预测准确性.
结论:
- 提高奶牛的料转化对于降低甲排放强度至关重要.
- 优先提高料转换效率应该是减轻乳牛甲排放的一个关键策略.
- 优化奶牛的生产力提供了一个可行的途径,以减少对环境的影响.
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