The effect of iodophor post-milking teat disinfection on iodine content in goat milk

Yaniv S. Ovadia*, C. Chris Sabastian, L. Dahl, A. M. Troen, S. J. Mabjeesh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Iodine intake is important for thyroid function and human health. Goat milk can be an important source of iodine for human nutrition. However, data regarding the effect of iodophor post-milking teat disinfection on iodine content in goat milk is lacking. Our aim was to assess the iodine concentrations in raw milk of dairy goats and to investigate the effect of post-milking teat-dipping iodophor practice on iodine content in goat milk. Two groups of dairy goats (n=6 in each) were treated with different post-milking teat-dipping disinfection: iodine-free solution (iodine-free group) and iodine-based solution (4,000 μg/L) (iodophors group). Treatments were carried out for 19 experimental days, following a 14-day pre-experimental period, in which only iodine-free sanitizer was used for both groups. The results showed that Iodine concentrations in milk of all goats were 49 ± 23, 49, 17-86 μg/100g (mean ± SD, median, range) at days-3,-2,-1 and 45 ± 26, 42, 14-96 μg/100g (mean ± SD, median, range) at days 17, 18, 19 of treatment. Iodine concentration increased by 7 μg/100g (mean) in the iodophors group while iodine concentration decreased by 15 μg/100g by day 17-19 of treatment in the iodine free group. It was concluded that relatively high iodine concentrations were found in raw milk of dairy goats whose teats were dipped post-milking in disinfectants with or without iodine. Post-milking teat-dipping iodophor practice may increase iodine content in goat milk within an average period of 20 days. This information can help in controlling iodine content in goat milk and iodine intake in the public.

Original languageAmerican English
Pages (from-to)14-22
Number of pages9
JournalIsrael Journal of Veterinary Medicine
Issue number4
StatePublished - 1 Dec 2018

Bibliographical note

Funding Information:
This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors. We are indebted to the lab members of the Nutrition and Brain Health Laboratory, School of Nutritional Sciences, Institute of Biochemistry, Food Science and Nutrition; Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University of Jerusalem, Israel and laboratory members of the National Institute of Nutrition and Seafood Research, Bergen, Norway, for samples handling and assistance for this study and to Dr. Tom Bielik and Miss Nathalie Weizmann for reviewing and editing this manuscript.

Publisher Copyright:
© 2018, Israel Veterinary Medical Association. All rights reserved.


  • Dairy goats
  • Iodine
  • Iodine Intake
  • Iodophors
  • Post-milking Teat Disinfection
  • Public health


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