水培料作为反动物的替代料,以减少反动物的甲排放:一个体外研究
Yang Li1, Rong Peng1, Carmen Kunz1
1Animal Nutrition, Institute of Agricultural Sciences, Department of Environmental Systems Science, ETH Zürich, 8092 Zürich, Switzerland.
Journal of dairy science
|September 29, 2024
概括
含有马拉酸盐的水培料可以通过与甲生成竞争气来减少反动物的甲 (CH4) 排放. 然而,高酸盐含量对疗效至关重要,排放可能会增加.
科学领域:
- 农业科学 农业科学
- 动物科学动物科学
- 环境科学 环境科学
背景情况:
- 酸盐是酸盐生产中的关键中间体,与的甲生成竞争,提供了一种策略,以减轻反动物的甲 (CH4) 排放.
- 与酸盐补充剂相关的高成本限制了其在反动物饮食中的实际应用.
- 通过glyoxylate循环利用种子发芽过程中产生的过渡性酸盐水平提供了一个具有成本效益的替代方案.
研究的目的:
- 调查富含马拉酸盐的水培料在动物中降低类甲产生的潜力.
- 为了评估不同水培料对体外小羊皮发酵参数的影响.
- 分析饮食中酸盐含量与甲排放之间的关系.
主要方法:
- 采用霍亨海姆气体试验进行了体验室的黄体发酵,用于在酸盐度达到峰值期间收获的水培料样本 (,料豆,意大利麦草,麦,大豆,三角,小麦).
- 料治疗包括取代20%的基础饮食 (20R) 和100%用高酸或麦 (SR) 取代料.
- 一种通用添加模型被用来分析饮食变量对甲产生的影响.
主要成果:
- 在20R处理中,大豆和草料分别减少了6.7%和6.6%的CH4产量. 在20R治疗中,玉米增加了6.3%的CH4.
- 在SR处理中,草降低了CH4的17.7%,但增加了氨的174%,而玉米则增加了CH4的35.8%,有机物质的消化率增加了12.6%.
- 在食中酸盐含量和CH4产量之间发现了负相关性,而NDF和粉含量与CH4产量有正相关性.
结论:
- 在水培料中存在的酸盐表明,有可能减少反动物的甲排放.
- 为了实现显著的甲缓解,需要足够高的酸盐度.
- 使用水培料可能会增加气排放,需要在动物研究中进行进一步的研究.
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