Abstract
The indocyanine green [IG] excretion test was performed in dairy cows, and the usefulness of this test was demonstrated. Absorption maximum of IG dye was observed at the wavelength of 805 nm. The dose of IG dye was varied between 0.25-0.75 mg/kg body wt in heifers with no significant (P > 0.05) difference in plasma clearance. When the dose of 0.25 mg/kg body wt was given to cows, the disappearance was exponential from 2-8 min after injection of IG dye solution in heifers and calvers. No side effects during and after injection of IG dye solution were observed. [IG has been used for measurement of cardiovascular and liver function.].