とうもろこしに対する放射線照射

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書誌事項

タイトル別名
  • Gamma Ray Irradiation to Corn
  • トウモロコシ ニ タイスル ホウシャセン ショウシャ カサンカブツ ノ セイセ
  • Formation of Peroxide and Its Effects on Chicks
  • 過酸化物の生成および雛に対する影響

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Two feeding experiments with chicks were carried out using gamma ray irradiated diets. In Experiment I, corn was irradiated at the levels of 3 and 6M rad prior to mixing with other ingredients. In Experiment II, the whole diet containing 65% corn was irradiated at the levels of 0.6, 3 and 6M rad. Peroxides and carbonyl compounds were formed with increasing dose levels, but the amount of peroxide in the corn was much smaller than that in the irradiated soybean oil reported in the previous study. No marked difference was observed in feed consumption and feed efficiency between control and irradiated diets. In Exp. I, the decreases in digestibility of crude protein and in metabolizable energy content were observed. In Exp. II, hemolysis of chicks developed with irradiation to the diet and encephalomalacia was observed in 4 chicks out of 6 which were fed 6M rad irradiated diet and all the chicks died within a day or two after showing the symptom of encephalomalacia. It is considered that most serious change with irradiation to the diets containing mainly corn is the destruction of vitamin E.

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