One pig drank excessively, using most of 1 carboy every
day; therefore, the water was replaced daily. One other
carboy fell on d 2, and the water was replaced. Water
use by each pig was measured with a graduated cylinder
(to within 10 mL) on 2 separate days, the day before
the study began, and on d 2, which was consistent
with daily water use. Water samples, randomly chosen,
were collected daily except for on d 2 and 5 when all
carboys were collected.