Abstract

In birds, sunlight exposure to non-feathered skin areas including the leg helps in synthesis of vitamin D3 and thus calcium regulation. Gradual rise in total serum calcium had been recorded in Bank Myna in response to increasing duration of sunlight exposure with a maximum of 15.13+ 0.146mg/ dl in June. Incongruously, the experimental Bank Myna without direct sunlight exposure did not displayed marked rise in serum calcium level. In Bank Myna with natural day length sunlight exposure, higher values of serumPi had been recorded in breeding peak (June).

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