Re: Trace elements and TB


"Steve Firth" <%steve%@xxxxxxxxxxxx> wrote in message
news:dp438f$s1$1@xxxxxxxxxxxxxxxxxxxxx
> Jim Webster wrote:
>
> > But they started adding selenium to dairy
> > cakes about thirty years ago because of sub clinical levels of selenium
> > deficiency,
>
> A bit longer than that wasn't it? I can remember a kid at school
> bringing a large metallic crystal into school probably in 1971/72. He
> showed it to the chemistry teacher who said it was a selenium crystal
> and asked where he got it from - he said it had been in the cattle feed.
>
> It was so large that I guess it would have done some damage to any cow
> that ate it. Made me wonder about the quality control at the feed company.

I remember we blood tested half a dozen cows, you could be right in it being
as early as 71. We were using Preston Farmers cake at the time which I
thought had to be mid 70s, but memory can play funny tricks so I could be
wrong in this
--

Jim Webster.
Pat Gardiner, Five years raving about bent vets and still no result




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