TY - JOUR AU - Chalyshev, Aleksander V. PY - 1998/01/01 Y2 - 2024/03/28 TI - IONIC HOMEOSTASIS IN RETICULO-RUMEN OF MOOSE AS A FACTOR OF ALIMENTARY ADAPTATION JF - Alces: A Journal Devoted to the Biology and Management of Moose JA - Alces VL - 34 IS - 2 SE - Articles DO - UR - https://www.alcesjournal.org/index.php/alces/article/view/759 SP - 347-353 AB - <p>In this study the results obtained on the daily mineral intake by moose and on the concentration of mineral elements in the reticulo-rumen liquid of moose in summer and in winter months are compared to previous data on reindeer. In both species a great difference in seasonal nutrient consumption is not followed by variation in total mineral elements of the reticulo-rumen liquid. Nutrient homeostasis, particularly of sodium, potassium, phosphates, and nitrogen in reticulo-rumen content in winter is maintained by intensive excretion with saliva and by transepithelial shortchain fatty acid-bicarbonate exchange. The stable level of mineral elements in the reticulo-rumen liquid in winter is necessary for microorganisms and for enteric ion homeostasis. Na<sup>+</sup>/H<sup>+</sup> and K<sup>+</sup>/H<sup>+</sup> Exchange through the rumen wall is a function of alkalinization of the epithelium. It is concluded that the reticulo-rumen in winter is a significant organ for nutrient deposition and its metabolism is a factor in wild ruminant seasonal adaptability.</p> ER -