Histological and Histopathological Comparative Study for Placentae of an Aborted Ewe with Placentae of Normal Birth in Ewe

*Hassan HK Al Bayati
Department Of Pathology, College Of Veterinary Medicine, Tikrit University, Tikrit, Iraq

*Corresponding Author:
Hassan HK Al Bayati
Department Of Pathology, College Of Veterinary Medicine, Tikrit University, Tikrit, Iraq

Published on: 2020-09-05


The present study was designed to show the histological architecture of the placenta after abortion in the ewe. Six placentae from normal gestation and normal birth, and six placentae from aborted ewe. The histological technique was done to complete the histological procedures, to obtain a slide with tissue, of the placenta, sectioned at 6 micrometer thickness, and stained by Hematoxylin and Eosin. The results revealed that abortion leads to the effect of the placenta in this case. The chorionic villi were containing cytotrophoblasts and syncytiotrophoblasts in a few numbers with the degenerated condition at the periphery of these villi and its core have congested blood vessels and lymphocytic infiltration with giant cells also seen.


Placentae; Abortion; Abortion in the Ewe; Normal birth in Ewe; Placental Histopathology


Abortion and death among newborns cause sharp economic problems in ewes [1]. Therefore, must be identified abortion where is a case that the gestation is the arrest of early-stage, mid-stage, and late-stage or even at any time of pregnancy, the embryo or fetus when is aborted is usually under many factors or manifestations leading to expelling outside the uterus of a pregnant female, the mortality as an aborted fetus is 100% due to contamination of uterus with one of the microbial, viral, nutritional or even mechanical effect, endometritis is expected result, also retained placenta or placental lesion, also present, where that of poor nutrition of ewe lead to reduce conception and even embryonic lost and also lambing rate reduced [2], while the effect of bacterial and parasite causes abortion by such as (Chlamydia abortus, listeriosis, and Toxoplasma gondii) [1]. The clinical signs of Toxoplasmosis may be seen in the second stage of the trimester in pregnancy ewe because infected for the first time with exemplary symptoms include stillborn and feeble, predominately, mummified fetus and placental cotyledons on the placenta, with present “white spots” lesions are grossly seen on the wall of the placenta [3]. It was found that Compylobacteriosis C.fetus, E.coli also recorded inducing abortion in ewe and bird, survive for short time (days) outside the gut, in abortion causes suppurative placentitis and endometritis bronchopneumonia in the fetus, with hepatic lesion and the abortion, usually occur in last six weeks of gestation, the risk of infection of Campylobacteriosis (contaminated environments and moist, drying condition in building or at pasture, the ally also found other causes of abortion is Listeriosis are diagnosed by culture and diagnosed, isolated from fetal membranes, fetal stomach contents or fetal liver, its abortion induced at any stage of gestation [1].

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