Title: Utilisation of iodine from different sources in pigs
Abstract: Balance experiments have demonstrated that growing pigs fed a ration consisting of wheat, barley, extracted soya meal, dicalciumphosphate, and iodine‐free feeding salt utilised 48.8% of the received iodine. The tested supplementary iodine sources included potassium iodide (KI), ethylenediamine dihydroiodide (EDDI), iodine humate (HUI) prepared from iodine acid (HIO3), and the product P containing 0.004% iodine in an oil base (P). The amount of the supplemented iodine was in all cases 1 mg per 1 kg feed. The utilisation of iodine from the supplements reached 93.6, 92.6, 90.7, and 67.9% for KI, EDDI, P, and HUI, respectively. The values were significantly higher compared with controls (P < 0.01). Compared with KI and EDDI, the utilisation of iodine from HUI was significantly lower (P < 0.01). The lower availability of iodine from HUI was probably due to the high binding capacity of humate. The amount of urinary iodine excreted by control pigs receiving in the non‐supplemented ration 147.5 μg iodine per day, was 40.3 μg per day (27.3%). In the pigs receiving in the supplemented ration 1647.5 μg iodine per day, the amount of urinary iodine reached 734.9 to 805.0 μg per day (44.6 to 48.9%). The corresponding values of faecal excretion were 75.6 μg iodine per day (51.2%) for the control pigs and 106.2 to 121.1 μg iodine per day (6.45 to 7.35%) for the pigs fed the supplemented rations. A high amount of 528.6 μg iodine per day (32.1%) was excreted in the faeces by pigs of the group HUI.
Publication Year: 2000
Publication Date: 2000-04-01
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
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Cited By Count: 13
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