title: Utilisation of iodine from different sources by sows and their progeny.
abstract: OBJECTIVE
  The aim of the study was to compare iodine utilization from different sources by sows and their progeny and the levels of T3 and T4 in their serum.
  
  
  METHODS
  Pregnant Czech Large White × Landrace sows were fed with an experimental KPK diet (a diet for lactating sows) 14 days before parturition until weaning (at a piglet age of 28 days). In group A (n=50, 10 sows, 40 piglets) the feed was supplemented with KI (0.6 mg of iodine per kg of feed). Iodine enriched alga Chlorella spp. (0.6 mg of iodine per kg of feed) was used as a supplement in group B (n=50, 10 sows, 40 piglets). In group C (n=50, 10 sows, 40 piglets) the sows were injected i.m. with IFAE at a dose of 100 mg of iodine per sow. Iodine, T3 and T4 were measured in each group for comparison of iodine utilization.
  
  
  RESULTS
  The use of IFAE resulted in higher serum concentrations in sows compared to KI and alga. In contrast, iodine concentrations in milk and piglets were lower when IFAE were used. We found a wide variation in the concentrations of T3 and T4 in the serum of piglets in all groups.
  
  
  CONCLUSIONS
  Our results indicate a good utilization of iodized oil by sows. However, its transfer into milk is lower compared to the other iodine sources.
authors.affiliation: Clinic of Ruminant and Swine Diseases, University of Veterinary and Pharmaceutical Sciences Brno, Czech Republic.
authors.forename: Tomas
authors.initials: T
authors.lastname: Banoch
authors.forename: Zdenek
authors.initials: Z
authors.lastname: Fajt
authors.forename: Jan
authors.initials: J
authors.lastname: Kuta
authors.forename: Vaclav
authors.initials: V
authors.lastname: Kotrbacek
authors.forename: Roman
authors.initials: R
authors.lastname: Konecny
authors.forename: Jan
authors.initials: J
authors.lastname: Travnicek
authors.forename: Martin
authors.initials: M
authors.lastname: Svoboda
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena / Q000502:physiology*; D000818:Animals; D000833:Animals, Suckling / Q000254:growth & development* / Q000378:metabolism; D003126:Colostrum / Q000378:metabolism; D019587:Dietary Supplements; D004952:Esters / Q000493:pharmacokinetics; D056890:Eukaryota; D005227:Fatty Acids / Q000493:pharmacokinetics; D005260:Female; D007455:Iodine / Q000493:pharmacokinetics*; D007459:Iodized Oil / Q000493:pharmacokinetics; D007774:Lactation; D008892:Milk / Q000378:metabolism; D036801:Parturition; D011193:Potassium Iodide / Q000493:pharmacokinetics; D011247:Pregnancy; D034421:Sus scrofa / Q000378:metabolism*; D013974:Thyroxine / Q000097:blood; D014284:Triiodothyronine / Q000097:blood
chemical_list: D004952:Esters; D005227:Fatty Acids; D014284:Triiodothyronine; D011193:Potassium Iodide; D007459:Iodized Oil; D007455:Iodine; D013974:Thyroxine