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Sara Fusar Poli¹, Valentina Monistero¹, Claudia Pollera^1,2

¹Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy.

BMC veterinary research

|September 12, 2024

概括

通过冷藏或冷存储奶牛床样本可以显著改变细菌的数量. 最好的样品是新鲜的样品,但如果需要储存,冷藏是最好的,而不是冷,以尽量减少细菌的损失.

科学领域:

动物科学动物科学
微生物学微生物学
环境科学环境科学

背景情况:

乳制品农场使用各种有机和无机床材.
回收肥料固体 (RMS) 正在作为一种有机床铺替代品获得吸引力.
准确的微生物负载评估对于动物福利至关重要,需要可靠的样本处理.

研究的目的:

评估冷藏 (制冷和冷) 对不同乳制品床材中的细菌数量的影响.
确定最佳的储存方法,以保持床铺样本中的微生物完整性.

主要方法:

在分离的原始肥料固体 (SRMS),无氧消化肥料固体 (ADMS) 和新沙子 (NS) 中评估了总细菌计数 (TBC) 和微生物类.
对这些床基质的新鲜,冷藏和冷样本中的细菌数量进行比较.

主要成果:

与新鲜样品相比,冷藏和冷通常会减少细菌数量,而冷会导致更大的减少.
在冷藏后,SRMS显示TBC的变化很小,而NS和ADMS在冷藏后的计数较低.
特定的细菌群体,如阴性菌和大肠杆菌,受结的影响比冷藏的影响更大,尽管链球菌的数量保持稳定.

结论:

冷藏方法,特别是冷,对乳制品的细菌学结果产生重大影响.
分析新鲜样品是理想的;然而,如果储存是不可避免的,建议冷藏而不是冷.
这两种方法都可能低估真正的微生物负载,需要仔细解释结果.

关键词:

无氧消化的肥料固体.床铺细菌学床铺细菌学新的沙子新的沙子分离的原始肥料固体.

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