Serum 25(OH) Vitamin D Concentrations in Horses: Effects of Age, Gender, Breed, Skin Colour and Season

• DOI: 10.1002/vms3.70092
• Publication Date: 2025-01-08T08:59:03Z
• Authors: Mohieddin Alemi; Saba Ahmadi Sheik...; Mehrdad Mohri
• Keywords: Veterinary medicine; SF600-1100; reference value; 25(OH)Vit D; ELISA; Original Article; diet; horse

ABSTRACT Background The optimal amount of vitamin D required for the proper functioning immune system differs from necessary bone homeostasis. Furthermore, metabolism varies among horses. Nevertheless, there is a dearth information regarding reference values in horses, particularly Turkmen breed. primary objectives this study were to determine concentrations 25‐hydroxyvitamin (25(OH)Vit D) Turkmen, Thoroughbred and mixed × horses explore effects various factors on it its relationship with serum biochemical variables signalment data. Methods For measurement 25(OH)Vit D, 90 healthy (min age: 6 months; max 10 years) that stable north Iran (37°17′ N, 55°18′ E) selected clinical examination complete blood biochemistry analysis. categorised into different groups based sex, season (spring, n = 45; autumn, 45), breed (Turkmen, Thoroughbred), age (< 2 years, 2–8 years > 8 skin colour. Sampling was performed only once each horse. Results In study, median concentration sampled 17.42 ng/mL (IQR: 9.82–30.85). significantly lower autumn (median: 15.83 IQR: 8.67–54.68) than spring 18.02 13.77–27.54) also 11.63–23.12) 17.72 8.94–51.67) ( p ≤ 0.05). Conclusion According results present had significant effect concentration, difference observed between mixed‐bred It unclear whether time sun exposure or content diet causes seasonal concentration.