[Dynamics of basic hematologic values in ewes during the course of a year]

Area of Science:

• Veterinary Hematology
• Sheep Physiology
• Reproductive Biology

Context:

• Establishing baseline hematological values in Merino ewes is crucial for understanding normal physiological parameters.
• Pregnancy and parturition significantly influence hematological profiles in sheep.
• Longitudinal studies are essential to track developmental and reproductive changes in animal blood parameters.

Purpose:

• To document basal hematological values in Merino ewes from birth through subsequent pregnancies.
• To analyze changes in erythrocyte and leukocyte counts during different life stages, including gestation and postpartum.
• To assess the impact of gravidity on red blood cell quality and white blood cell dynamics.

Summary:

• Erythrocyte counts ranged from 6.5-10.3 T/L, hemoglobin 101.3-121.3 g/L, and hematocrit 0.32-0.37 L/L.
• Leukocyte counts varied from 4.98-9.93 G/L, with neutrophils dominating during parturition before normalizing postpartum.
• Gravidity did not negatively affect red blood cell quality, with all values remaining within physiological limits.

Impact:

• Provides essential reference ranges for Merino ewe hematology, aiding in health monitoring and disease diagnosis.
• Highlights the dynamic nature of leukocyte populations, particularly neutrophils, around parturition.
• Confirms the robustness of red blood cell parameters despite the physiological stress of advanced pregnancy.