Availabilities of three iron compounds as dietary iron sources for red sea bream.

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Other Title
  • マダイ飼料用鉄給源としての各種鉄剤の利用性
  • マダイ飼料用鉄給源としての各種鉄剤の利用性〔英文〕
  • マダイ シリョウヨウ テツ キュウゲン トシテノ カクシュ テツザイ ノ リヨ

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Two experiments were conducted to compare the availability offerrous chloride, ferric chloride, and ferric citrate as the iron sources in the diet for red sea bream, Chrysophrys major. Iron contents of the test diets were adjusted to approxunately 15mg per 100g of diet in experiment I, and 20mg per 100g in experiment II. Fish were reared on the test diets at 25° over a 73-day period (Exp.I) and over a 90-day period (Exp. II). At the end of the feeding trial, hematological examinations and chemical analyses of the blood serum were conducted. At the 15mg Fe per 100g diet level, fish fed the diet supplemented with ferric citrate showed a slight iron deficiency anemia, but fish fed the diets with supplemental ferrous chloride and ferric chloride did not. On the other hand, at the 20mg Fe per 100g diet level, no anemia was found in the ferric citrate group. Therefore, it is concluded that the amount of ferrous chloride and ferric chloride required for the prevention of iron deficiency anemia corresponds to 15mg Fe per 100g diet, and that of ferric citrate corresponds to 20mg Fe per 100g diet.

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