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Research Article

Effectiveness of blood electrolyte homeostasis regulation in polar foxes (Allopex lagopus, Linnaeus 1758)

Wiesław Skrzypczak ¹ , Roman Szymeczko², Katarzyna Wiśniewska-Kwaśnik³, Anna Piątek⁴

¹Department of Physiology, Cytobiology and Proteomics, West Pomeranian University of Technology Szczecin, Klemensa Janickiego 29, 71-270 Szczecin, Poland

²Firma Esfeed, Gołębia 73/19, 85-309 Bydgoszcz, Poland

³Science and Technology Park of Szczecin, Cyfrowa 6, 71-441 Szczecin, Poland

⁴Apis LLC, Kossaka 3, 37-450 Stalowa Wola, Poland

1. Acta Sci. Pol. Zootechnica, 22(2), 2023, 31‒36
2. DOI: 10.21005/asp.2023.22.2.03

Abstract. The Arctic fox (Alopex lagopus, L. 1758) is maintained in captivity for breeding purposes due to the high quality of its winter fur. The success of breeding these animals depends primarily on their health, which determines high reproductive rates, low neonatal mortality and proper development of young animals. A prerequisite for maintaining good health is the maintenance of a constant internal environment, especially water-electrolyte and acid-base homeostasis. Sodium, potassium and chloride are the main electrolytes affecting volemia and osmolality of body fluids. In the current study, the results regarding the renal capacity of six-month-old foxes to regulate sodium, potassium, and chloride levels are presented, considering the sex of these animals. It has been shown that the concentration of sodium, potassium, and chloride in the blood serum of six-month-old polar foxes, as well as the osmotic pressure of the blood serum, were within the upper limits of physiological normal range. Higher concentrations of sodium and potassium were observed in males of these animals. Nonetheless, the results indicated efficient regulation of blood electrolyte homeostasis, both in females and males.

Keywords: polar fox, plasma blood, natrium, kalium, chloride, osmotic pressure