"Lotus" wrote in message
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"Lotus" wrote in message
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"Jim Webster" wrote in message

snipping to answer a single question

no because beef herds will get mineralised blocks or similar which
dairy
cattle will never normally be offered.

But beef herds use salt licks at will. Added to feed, the animal
has no choice but to ingest it.

you haven't the faintest idea what a mineralised block is have you.

Humour me.

One example is below. Farmers know this product intimately. The blocks
weight fifty pounds and you have to lug this block across frozen fields and
swollen creeks to get it to the blasted cattle. Got a set of bruises on my
ribs now from humping one of these things out to the lower pasture through
the ice storm a few weeks ago. The ice won, I fell on the thing.

http://www.martindalefeed.com/Products/BLOCKS/3307.htm