Histological study of ovary through last periods( Oryctolagus cuniculus) of pregnancy in domestic rabbit

Abstract

  The aim of this work was to study the morphology of the ovaries of rabbit at last peroid pregnancy in order to understand the effect of pregnancy on the development of follicles. Twenty local breed pregnant does in estimated ages, five does prepared for every stage beginning from 22, 24, 26 and 30 days by which gestation occurred. Their ovaries were removed, fixed in 10% of formalin and routinely processed of histotechnique for histological studies. The observations of histological examination shown that the cortex was occupied with different types and various sizes of follicles, Corpora lutea were also observed in ovary at each stage of present study. These results show, and according statistical analyses of the numbers of primordial and primary follicles become decrease with  progressive of pregnancy. The diameter of primary follicles can be different according to the average diameter of the oocyte. The results showed that decrease rate of secondary follicles formation through all pregnancy stages of present work compare with the rate of primary follicles. The ratio of follicles growth to atresia folliclea in pregnancy is lower than that of the female at cycle stages. The morphometerical result showed that the increase in rate of the tertiary follicles in last day of gestation.