The type of mineral supplement she should supply her cows is referred to as magnesium.
What is Grass Tetany?
This is also referred to as hypomagnesaemic tetany and it is common in ruminant animals who are lactating.
It is characterized by restlessness, nervousness etc as a result of serum magnesium levels falling below a critical level.
Read more about Tetany here https://brainly.com/question/12926272
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