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브로일러 병아리의 등 피부에 312 mm 자외선 조사시 상이한 선량이 혈장내 비타민 D3 함량에 미치는 영향
장윤환(Y . H . Chiang),원지웅(J . W . Won),강훈석(H . S . Kang),김강수(K . S . Kim),여영수(Y . S . Yeoh) 한국축산학회 1992 한국축산학회지 Vol.34 No.3
This study was conducted to elucidate the effect of different dose of 312 nm UV light on plasma vitamin D₃(D₃) content of 3 week old broiler chicks. The 0.32, 0.65 or 0.98 J/㎠ of dose was applied on dosal skin of birds and blood samples were collected day 0, 1, 2, 3, 4 and 5 after UV exposure. The plasma was isolated and D₃ concentrations were analyzed by HPLC. When dorsal skin was exposed to 0.32 J/㎠ of UV dose, the mean plasma D₃ content was 24 ng/㎖ immediately after irradiation and 46 ng/㎖ (peak) at day one after exposure. The D₃ level tended to decrease until day 5 (10 ng/㎖). As 0.65 J/㎠ of UV dose was treated, the D₃ concentrations were 20, 22, 37, 14, 29 and 10 ng/㎖ at day 0, 1, 2, 3, 4 and 5 after irradiation, respectively. When 0.98 J/㎠ dose was applied, the plasma D₃ levels were 25, 25 and 34 ng/㎖ at day 0, 1 and 2, respectively and decreased thereafter. Consequently it was shown that the treatment of 0.32 J/㎠ produced more D₃ in chick plasma than 0.65 or 0.98 J/㎠ did (P$lt;.05).