General Zoological Data
|Royal antelope female at San Diego Zoo.|
General Gestational Data
|Adult female antelope with offspring.|
General Characterization of the Placenta
The villi were straight and little-branched. Their surface was covered with a single layer of cellular trophoblast and numerous binucleate cells. The autolytic process had caused some accumulation of fluid in the villi; otherwise they were similar to those described for oribi.
|Macroscopic appearance of Royal Antelope placenta with tiny umbilical cord in the center.|
|Typical villous placenta that shows some degree of autolysis in the blue connective tissue of the villi. Chorionic plate with fetal vessels above.|
Details of fetal/maternal barrier
|Section of one villus with mild autolysis. Fetal vessel in center, disorganized (autolyzed) trophoblast contains a moderate number of binucleated cells.|
|Section of thin umbilical cord with large allantoic duct at arrow. The blood vessels are conspicuously confined to the periphery of the duct.|
|Higher power of the wall of the allantoic duct with its adjacent blood vessels. Debris inside the duct.|
|Amnion above, allantois with allantoic blood vessels below.|
|Membranes between the cotyledons. Amnion is above, the trophoblastic layer overlying the areolae below. Note the cylindrical trophoblast and debris over areolae.|
Trophoblast external to barrier
15) Pathological features
Other remarks - What additional Information is needed?
Izard, J. and Umfleet, K.: Notes on the care and breeding of the suni Nesotragus moschatus at Dallas Zoo. Int. Zoo Ybk.11:129, 1971.
Jones, M.L.: Longevity of ungulates in captivity. Int. Zoo Ybk. 32:159-169, 1993.
Kellas, L.M.: The placenta and foetal membranes of the antelope Ourebia ourebi (Zimmermann). Acta Anat. 64:390-445, 1966.
Kingswood, S.C., Kumamoto, A.T., Charter, S.J. and Jones, M.L.: Cryptic chromosomal variation in suni Neotragus moschatus (Artiodactyla, Bovidae). Animal Conserv. 1:95-100, 1998.
Matthee, C.A. and Robinson, T.J.: Cytochrome b phylogeny of the family bovidae: Resolution within the alcelaphini, antilopini, neotragini, and tragelaphini. Molec. Phylogen. Evol. 12:31-46, 1999.
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