Mean daily water intake was 81.5 kg/cow
and ranged from 14.2 to 171.4 kg/cow. Average
ambient temperature, milk production, dry matter
intake, dry matter content of the ration, body weight,
lactation rank, lactation day, Na intake and K intake
were positively related ( P < 0.001), and only the
relative humidity and roughage part of the ration were
negatively correlated (P < 0.001) to the water intake.