van der Merwe Deon, Jacobs Yannique, van der Drift Saskia, Koopmans Ant
Royal GD, Deventer, The Netherlands.
J Vet Diagn Invest. 2025 Mar 24:10406387251325864. doi: 10.1177/10406387251325864.
We examined the liver mineral concentrations of semi-wild cattle breeds (Highland, Galloway, Rode Geus) grazing in natural or near-natural flood-prone areas in the Netherlands. These breeds are employed as part of trophic rewilding initiatives aimed at maintaining biodiverse ecosystems through natural grazing patterns. Our primary goal was to derive RIs for liver mineral concentrations for these cattle populations. We collected and analyzed liver samples from 96 cattle from 14 sites in the Netherlands and used inductively coupled plasma mass spectrometry to measure concentrations of trace elements and heavy metals, including arsenic, cadmium, chromium, cobalt, copper, iron, lead, manganese, molybdenum, nickel, selenium, vanadium, and zinc. The statistical analysis included Pearson product moment correlations and -means clustering to evaluate patterns within the data. The highest significant correlations were between liver cadmium concentrations and animal age, and between liver copper and selenium concentrations. Breed-related differences were found for liver cadmium and molybdenum concentrations, but we could not isolate breed-differences in forage selection from environmental variables such as soil composition. Liver copper levels in many animals were below thresholds typically used to indicate copper deficiency in farmed cattle.
我们研究了在荷兰自然或接近自然的易洪区放牧的半野生牛品种（高地牛、加洛韦牛、罗德格斯牛）的肝脏矿物质浓度。这些品种被用作营养性野化计划的一部分，旨在通过自然放牧模式维持生物多样性生态系统。我们的主要目标是得出这些牛群肝脏矿物质浓度的参考区间。我们从荷兰14个地点的96头牛身上采集并分析了肝脏样本，并用电感耦合等离子体质谱法测量了微量元素和重金属的浓度，包括砷、镉、铬、钴、铜、铁、铅、锰、钼、镍、硒、钒和锌。统计分析包括皮尔逊积矩相关性分析和均值聚类分析，以评估数据中的模式。最高的显著相关性存在于肝脏镉浓度与动物年龄之间，以及肝脏铜和硒浓度之间。发现肝脏镉和钼浓度存在品种相关差异，但我们无法将饲料选择方面的品种差异与土壤成分等环境变量区分开来。许多动物的肝脏铜水平低于通常用于指示养殖牛铜缺乏的阈值。
