Stereological investigation of medulla oblongata volume in Norduz sheep

In this study, it was aimed to stereologically examine the medulla oblongata volume of Norduz sheep in Gürpınar District Van Province. Upon receiving news from sections region, we went region. A total 12 skulls, 6 females and males, were received slaughter After brains dissected, they fixed as a whole formaldehyde for 1 week. Medulla oblongatas separated brain kept Tissues obtained by sequential random sampling used texture tracking. tracking, 10-12 5 μm thickness taken method using rotary microtome (Leica RM, 2135, Leica Instruments, Nussloch, Germany) steel disposable blades. These stained with hematoxylin-eosin staining viewed under an Olympus CX31 microscope U - TV0, 5XC 3 Tokyo Japan. Photos 4× objective calculations. Total volume, cortex values calculated separately images Shtereom I program. The Cavalieri's principle when applying stereological methods statistical evaluation between sexes, no difference found comparison values, both sexes. addition, there sexes terms medulla/total ratio values. However, value 0.004 cortex/total case, since p < 0.005, is possible talk about statistically significant male female value. Again, medulla/cortex be 0.041, observed calculations evaluated programs all results presented literature.