Trace elements and TB
- From: "Jim Webster" <Jim@xxxxxxxxxxxxxxxx>
- Date: Fri, 30 Dec 2005 18:34:03 -0000
There has been a bit of interest about trace elements and TB
http://www.parliament.the-stationery-office.co.uk/pa/cm199899/cmselect/cmagr
ic/233/233app30.htm
Or search for Memorandum submitted by Hellen Fullerton PhD (L37)
This links in with a firm called FIELD SCIENCE LTD
http://www.fieldscience.co.uk/introduc.htm
Which is also putting out stuff claiming that adding trace elements to
grassland will reduce the susceptibility to TB in bovines and badgers
Instinctively I regard the this field as a fine hunting ground for snake oil
salespersons. But two points raised that did puzzle me.
Firstly they are talking about an increase in the usage of Ammonium Sulphate
as a fertiliser locking up selenium. Has there been an increase in the
usage? Round here it remains Ammonium Nitrate or Urea as the fertilizer of
choice, while another point made was selenium deficiency was one of the
causes of susceptibility to TB. But they started adding selenium to dairy
cakes about thirty years ago because of sub clinical levels of selenium
deficiency, I can remember we did some blood tests at the time and the vets
noticed this deficiency, but virtually that month the companies all
announced they were adding selenium. So if selenium was a problem, then
surely high yielding dairy herds would be the least likely to be effected by
Selenium.
Are companies selling mineral supplements going through a hard time at the
moment?
--
Jim Webster.
Pat Gardiner, Five years raving about bent vets and still no result
.
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