Results from grazing samples checked this spring at the Trouw Nutrition GB Company showed increased levels of heavy metals such as iron and aluminium, these can be antagonists to some minerals. This has certainly been caused by the flooding.
A mineral expert has confirmed "Grazed grass is at best a variable source of minerals with levels directly dependent on the mineral content of soils. Some minerals will be in short supply, giving rise to potential deficiencies, while others can be present at high levels and can be antagonistic to other minerals. These risks increase where land has been waterlogged and where grass has been under water for any length of time"
He warns against just blanket increasing mineral supply, this can result in feeding minerals above the requirement level and make issues with antagonism worse.