[The importance of exogenous factors on the composition of the urine of breeding sows].

The influence of protein content in feed, of reduced and increased water-intake, of different hygienic situations and of antibiotic feed-medication on urine contents was controlled in healthy and cystitis diseased sows. It could be shown, that the urinary quality of healthy and ill sows was influenced in the same direction by exogenous factors. The amount of water-intake shows the greatest influence. Its rinsing effect on the quantity of relevant parameters of the urine examination (bacterial count, protein content, cell content) can induce misleading findings. Therefore the evaluation of the urinary status should be completed by anamnestic information, especially concerning increased or reduced water-intake.