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Plasma inorganic iodine values in beef cows following rumen bolus or dietary mineral supplementation

  • J. J. Parkins (a1), R. G. Hemingway (a1), G. Fishwick (a1) and N. S. Ritchie (a1)


Plasma inorganic iodine concentrations (PII, ng/ml) are increasingly used in preference to plasma thyroxine concentrations (T4) for diagnostic purposes. PII represents current dietary iodine intake and responds rapidly (within a very few days) to increases and decreases in dietary iodine (I) intake by cows (Rogers and Mee, 1966). This study measured changes in PII in response to different I intakes supplied by contrasting methods to beef cows during late pregnancy and early lactation.



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McCoy, M. A., Smyth, J. A., Ellis, W. A, Arthur, J. R. and Kennedy, D. G. 1997. Experimental reproduction of iodine deficiency in cattle. Veterinary Record 141: 544547.
Rogers, P. A. M. and Mee, J. F. 1966. Trace element supplementation of cows. Part 1. Effects of oral copper, selenium and iodine supplements on tissue status. XIX World Buiatrics Conference, Edinburgh. 2: 394397.
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Proceedings of the British Society of Animal Science
  • ISSN: 1752-7562
  • EISSN: -
  • URL: /core/journals/proceedings-of-the-british-society-of-animal-science
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