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Journal of Dairy Science Vol. 66 No. 9 1976-1979
© 1983 by American Dairy Science Association ®
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Iodine in Field Milk Samples and Effects on Mastitis Organisms1

G. J. Ruegsegger, P. Kuehn and L. H. Schultz

Department of Dairy Science, University of Wisconsin, Madison 53706

ABSTRACT

Bulk tank milk samples collected from 175 dairy herds throughout Wisconsin averaged 466 µg of iodine per liter with 11% of the samples containing greater than 1000 µg per liter. From questionnaires on feeding and management, use of iodine supplements in feed was associated with increased iodine in milk.

One gram of ethylenediamine dihydriodide was fed daily for 2 wk to dairy cows with a history of mastitis. Milk iodine increased from 210 to 6225 µg per liter. There was no significant effect on somatic cells, mastitis organisms, or incidence of clinical mastitis.

FOOTNOTES

1 Research supported by the College of Agricultural and Life Sciences, University of Wisconsin, Madison, and USDA Animal Health Grant 144-N-467.






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Copyright © 1983 by the American Dairy Science Association ®.