Captive Sarcophilus harrisii and Dasyurus viverrinus were fed on rats and provided with water ad libitum. Apparent dry matter digestibility was about 80% and apparent energy digestibility was about 88% in both species. The daily water turnover rate was approximately 130 ml per W*0.82 in both species, but S. harrisii obtained substantially more water by drinking than D. viverrinus. Sodium turnover rates were closely correlated with food consumption.
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Green et al. (1979) studied this question.