Effects of the Feeding of Iodine Additives on Qualities and Production of Eggs in Layers

概要

論文の詳細を見る
This experiment was to determine the effects of the feeding of three different types of organic or inorganic iodine additives on the contents of iodine and cholesterol in eggs and egg production in layers. The iodine content in yolk increased rapidly 4 days after the feeding of the additives. At 9-11 days later it reached to the maximal levels (19-23μg) which were about 60-70 times compared with those of the control group and were maintained during the feeding of the additives. When the feeding of the additives was suspended, the iodine content in yolk decreased sharply 5 days later and reached to almost the same levels as those of the control group 9 days later. The iodine content in albumen also increased gradually reaching to the maximal levels (0.6-1μg) 5 days after the feeding of the additives. It reached to the same levels as those of the control group 4 days after suspending the feeding of the additives. It is suggested that iodine fed additionally to layers is accumulated both in yolk and albumen, but the degree of the accumulation is much higher in yolk than albumen.There was no difference in iodine accumulation in the eggs among three different types of iodine additives used. The content of cholesterol in yolk and laying performance was not affected by the feeding of the additives.
日本家禽学会の論文