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This study aims to investigate, for the first time in Algeria, the variations of hematological and ionic parameters of Holstein dairy cows according to the physiological stage, as an indicator of its health status. The survey was conducted between January and March 2020 and carried out on 4 lots of 15 dairy cows each. The analysis of blood parameters concerned: red blood cells (RBC), hematocrit (HCT), hemoglobin (HGB), mean corpuscular volume (MCV), mean corpuscular hemoglobin content (MCH), mean corpuscular hemoglobin concentration (MCHC), platelets (PLT), the white blood cells (WBC), lymphocytes (LYM), monocytes (MONO), neutrophils (NEU), eosinophils (EOS), basophils (BASO) and ionic parameters such as potassium (K), chlorine (Cl), calcium (Ca), phosphorus (P) and sodium (Na). The RBC level was lowest in the 2nd third of gestation (6.0 ± 0.8 x 106/µL) and in postpartum period (5.6 ± 0.8 x 106/µL), in comparison to the 1st third (6.6 ± 0.6 x 106 / µL) and 3rd third (dry period) of gestation (6.7 ± 0.5 x 106 / µL) (pst third of gestation compared to the other stages, (11.3 ± 2.2 x 103 / µL) versus (6.4 ± 4.1 x 103 / µL), (5.2 ± 1.3 x 103 / µL), and (8.0 ± 4.9 x 103 / µL) for the 2nd third, 3rd third of gestation, and postpartum, respectively (p |
