[Apparatuses for obtaining continuous 24-hour records of water intake and urinary output in dogs]

Two apparatuses were constructed to obtain continuous records of water intake and urinary output in a dog. As a validation of their accuracy, daily patterns of these measurements were observed on a beagle using these two apparatuses during non-treatment and treatment of the diuretic drug, flosemide. During the non-treatment, water intakes increased after feeding, but urinary outputs did not show a regular pattern. These patterns were the same as the previously reported patterns. During the treatment, urinary output increased within one hour after treatment. These results show these apparatuses are useful in measuring water intake and urinary output continually on the experimental dog.