Routine red bone marrow smear in local breed claves at Basrah, Iraq

Abstract

The state of the peripheral blood reflects on bone marrow activity. Therefore, we need to know the normal red bone marrow, and it can be a reference for those interested in hematology. Calves of apparently healthy local breeds were used to examine the state of the bone marrow, take a sample of peripheral blood before slaughter, and then a bone marrow biopsy that was immediately after slaughter. The calves that showed typical values for the parameters of red blood cells and total and differential white blood cells were included in the study. The result of bone marrow smears for nine normal calves appeared to have a faint coloration of granulated myelocytic than erythroid cells. As well as the myeloid was less than the erythroid, and that M: E ratio was 0.91±0.03. The erythroid series, Rubriblast, and Rubricyte were present as the most common progenitor red cell, including basophilic, polychromic, and normochromic cytoplasm, metarubricyte as a reduced nucleus. The myeloid series: Myeloblast, myelocyte was the most common progenitor white cells with granulation as basophilic, eosinophilic and neutrophilic within their cytoplasm, metamyelocyte with shrunken nuclei and band cell with horseshoe nucleus. They rarely found the megakaryocyte, enormous multinucleate cell.