Effect of a single dose of iodized fatty acid ester Lipiodol® Ultra-Fluid on egg iodine concentrations and egg production

https://doi.org/10.17221/5782-VETMEDCitation:Trckova M., Pisarikova B., Suchy P., Herzig I. (2003): Effect of a single dose of iodized fatty acid ester Lipiodol® Ultra-Fluid on egg iodine concentrations and egg production. Veterinarni Medicina, 48: 293-300.
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The aim of the study was to test whether a single intramuscular or oral application of iodized fatty acid esters (IFAE), without any iodine supplements in the rations, would increase for a long time iodine concentrations in egg yolk without any drop of egg production and egg quality. The results were compared with those obtained using the conventional iodine source – potassium iodide (KI). After the adaptation period, 10 mg of iodine/kg of live weight were applied to the experimental layers at the age of 21 weeks. The layers were divided into four groups: the group K-KI received iodine orally in the form of potassium iodide; iodine was applied orally in the form of IFAE to the group P-PO; and iodine as IFAE was applied intramuscularly to the group P-IM. The control group (K-0) received no iodine. Increased concentrations of iodine in egg yolk were observed following oral application of KI and IFAE. Maximum concentrations were measured on day 5 following application (12 863 ± 3 269 μg I/kg for K-KI, and 14 037 ± 2 506 μg I/kg for P-PO). Quite different course of changes was recorded following intramuscular application of iodine (group P-IM). Both, the increase and drop of iodine concentrations were slow, maximum values were measured from day 11 till day 35 of the experiment (from 769 ± 426 to 1 163 ± 757 μg of I/kg yolk). Intramus­cular application of IFAE resulted in significantly higher levels (P < 0.05, P < 0.01) of iodine in egg yolk from day 11 till the end of the experiment (on day 154) compared with the group K-0, and from day 14 compared with the group K-KI. At the same time, more fluent course of egg production with maximum at the age of 34 weeks was observed in laying hens. No effect of iodine application on egg production and egg mass was found. Significantly higher weights of eggs (P < 0.05, P < 0.01) and egg white (P < 0.05) were recorded following oral and intramuscular application of IFAE compared with the control group K-0.
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