Hematological and Biochemical Profiles of Nutria (<i>Myocastor coypus</i>): Implications for Biodiversity Management and Household Rearing Practices
2025
Roxana Lazăr | Paul-Corneliu Boișteanu | Ioana Bolohan (Acornicesei) | Bianca Maria Mădescu | Mihaela Ivancia | Mircea Lazăr
The absence of standardized reference values for wild rodent species underscores the need for comprehensive hematological and biochemical profiles. This study established robust reference intervals (RIs) for <i>Myocastor coypus</i> raised in captivity, analyzing 30 nutrias (10 males, 10 females, and 10 juveniles) at a private farm in northeastern Romania. Leukocyte (WBC) counts averaged 11.85 (10<sup>3</sup>/µL) in males, 10.51 (10<sup>3</sup>/µL) in females, and 11.63 (10<sup>3</sup>/µL) in juveniles, indicating a consistent immune response. Hemoglobin was 11.81 g/dL in males, 11.97 g/dL in females, and 15.42 g/dL in juveniles, with hematocrit levels around 45%. Juveniles displayed higher MCH (38.59 pg) and MCHC (38.58 g/dL), reflecting growth-related adaptations. Platelet counts were lower in adults. Biochemical findings showed lower cholesterol (14.89 mg/dL) and higher glucose (236.26 mg/dL) in juveniles, indicating intense energy metabolism. Total proteins were significantly elevated in juveniles (33.17 g/dL). Creatinine and uric acid levels were higher in adults, although calcium exceeded reference ranges in males (12.04 mg/dL). Hepatic enzyme ALT was higher in males. These findings establish baseline health parameters for captive nutrias, aiding in monitoring and improving rearing practices.
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