effect of various iodine supplementations and two different iodine sources on performance and iodine concentrations in different tissues of broilers

1. The objective of this study was to determine the influence of iodine (I) supplementation of feed, within the range of the European guidelines, on the performance of broiler chickens and I transfer into different organs and tissues, especially meat. The main emphasis was to assess whether broiler...

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Bibliographic Details
Published in:British poultry science 2011-02, Vol.52 (1), p.115-123
Main Authors: Röttger, A.S, Halle, I, Wagner, H, Breves, G, Flachowsky, G
Format: Article
Language:English
Subjects:
Animal biology
Animal Feed
Animals
blood serum
broiler chickens
calcium
chicken meat
Chickens - growth & development
Chickens - metabolism
Dietary Supplements
human nutrition
iodine
Iodine - administration & dosage
Iodine - blood
Iodine - metabolism
Iodine - pharmacology
Life Sciences
liver
Liver - metabolism
Male
Meat
thyroid gland
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Summary:1. The objective of this study was to determine the influence of iodine (I) supplementation of feed, within the range of the European guidelines, on the performance of broiler chickens and I transfer into different organs and tissues, especially meat. The main emphasis was to assess whether broiler meat could be enriched and used as an I source in human nutrition.2. Two experiments were performed, one with KI and the other with Ca(IO₃)₂. For each experiment, 288 d-old broiler chicks were divided into 4 groups (72 birds/group) and fed on diets with supplementations between 0 and 5 mg I/kg feed. The birds were reared to 35 d of age under standard conditions. Six birds per group were slaughtered at 35 d and samples of blood, thyroid gland, liver, pectoral and thigh meat taken.3. Iodine treatment did not significantly affect the growth and slaughter performance of the broiler chickens. In all investigated parameters, I concentrations increased significantly with increasing I intake of the animals. The lowest I concentrations were measured in the meat, but they were considerably higher in blood serum, liver and thyroid gland. Since the I content of meat was still low in the highest supplemented group (highest median concentration: 67·8 µg I/kg thigh meat), there is no evidence that this could substantially improve I supply in human nutrition.
ISSN:1466-1799
0007-1668
1466-1799
DOI:10.1080/00071668.2010.539591