Beefmaster is a magnesium block for the grass tetany window — lush, fast-growing winter and spring pasture, where magnesium availability drops just as lactating cows need it most. Tetany kills quickly and often without warning, so this is a preventive fed ahead of the risk period, not a treatment.
Timing is the whole thing. Start the block before the pasture flush and before calving, not after the first case. Blocks are also self-fed, so intake varies between animals — in a high-risk mob many producers use a dusted hay or a drench as well.
Feeding & Use
Introduce ahead of the tetany risk period. Place where stock camp or water, under cover where possible, and provide enough blocks for the mob. Always provide clean, fresh water.
Handling
A 15kg solid block. This is a heavy item; see the shipping note at checkout.
More Olssons cattle blocks
The full analysis is printed on the label.

