AMINO-ACIDS IN PLASMA OF FASTING FAT PRAIRIE DOGS AND LEAN MARTENS

Protein catabolism was compared between fasted martens (Martes america na) and white-tailed prairie dogs (Cynomys leucurus). Amino acids in p lasma decreased in white-tailed prairie dogs during fasting, but eleva ted in martens with a simultaneously reduced excretion of urea, thus s uggesting the martens may have a higher turnover of proteins, but conc omitantly greater recycling of nitrogen.