P REGNANT animals need high energy to maintain pregnancy and embryo development.Animals supplemented with low energy diets are predisposed to inflammatory processes, immune system dysfunction, and maternal metabolic issues during pregnancy. This research work aimed to declare the changes in hemato-biochemical parameters in pregnant Rembi sheep. Thirty healthy Rembi ewes were synchronized in October 2020 for the current study. Beginning in the first month of pregnancy, blood was taken monthly from the jugular vein. Our results showed that plasma glucose (GLU), urea, and globulin(Glob) decreases were highly significant (P<0.05) during the last two months of pregnancy. Conversely, the values of triglyceride (TG), Albumin (Alb), Alanine Aminotransferase (ALT), and Aspartate Aminotransferase (AST) recorded a highly significant increase at the end of the pregnancy. Furthermore, serum levels of Calcium (Ca) and Phosphorus (P) recorded a highly significant (P<0.05) decrease during the last month of gestation. Total protein (TP) and Gammaglutamyl Transferase (GGT) showed significant (P<0.05) decreases during the first gestational month. Regarding the hematological parameters, especially erythrogram, in the last month of gestation, ewes present macrocytic hypochromic anemia with a highly significant (P<0.05) decrease in the values of red blood cells (RBC) and hemoglobin (HBC). White blood cells (WBC) were found to be significantly higher (P< 0.05) in the final month of pregnancy compared to the first. Blood parameters may change during pregnancy, and that can reflect the health of the ewes.
Several nutritional problems can be observed in ewes with advanced pregnancy when energy demands related to fetal development increase, then can hurt ewes and their lambs during this period. The aim of our study was the assessment of hematological and some biochemical parameters changes in ewes during late pregnancy and the influence of age, parity, and fetuses number on the latter. In this study blood samples were collected from forty ewes of the Rembi breed during the end of pregnancy, housed in the region of Tiaret, aged 2 to 6 years old. The choice of these ewes was made randomly. Our results recorded a decrease in the values of red blood cells (RBC), hemoglobin (Hb), hematocrit (Ht), Iron (Fe), and glucose (Glu), plus an increase in total white blood cells (WBC) compared to the range of reference.Statistical analyzes showed a significant influence of age on the RBC and Fe values with a highly significant influence of parity on the mean corpuscular volume (MCV) value. Our results recorded a positive correlation between (RBC, Hb, and Ht) and Glu value, whereas a negative correlation was found between WBC and platelets (PLA). Metabolic diseases due to nutritional problems are very important in ewes at the end of pregnancy, and then it is necessary to highlight the changes that can adversely affect lambing and lamb viability in this physiological stage.
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