[Urea feeding of sheep on a diet rich in proteins: effects on urinary secretion].
Ten ewes kept on a high protein level diet were fed water solutions of urea (0.25 g/kg). Blood urea, urine volume and renal urea excretion were determined thereafter. A long lasting increment of blood urea level was observed as well as an increased urine volume with a lowered urinary osmotic pressure. Moreover, urea clearance was significantly decreased in spite of the increased amount of urea excreted by the kidney. A negative correlation between urea clearance and blood urea level could be demonstrated when the latter was higher than 0.5 g/l.
D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D004044:Dietary Proteins / Q000378:metabolism*; D012756:Sheep / Q000378:metabolism* / Q000652:urine; D014508:Urea / Q000008:administration & dosage* / Q000097:blood / Q000652:urine
D004044:Dietary Proteins; D014508:Urea
Apport digestif d'urée chez la brebis soumis à un régime riche en protéines: effets sur la sécrétion urinaire.