Gross observation on the development of placentome in buffalo (Bubalus bubalis)

Ram, R.; Chandra, G.

Indian Journal of Animal Health 18(2): 11-16

1979


Accession: 000669507

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Abstract
Development of placentome was studied in 14 buffaloes at different stages of gestation. Before firm attachment the maternal cotyledons enlarged and appeared spongy. Fetal cotyledons were bud-like and subsequently became congested with many villi. A firm attachment was observed in the placentome of the mid-region of gravid horn at 11 cm crown-rump length (crl) stage. By 31.5 cm crl stage it was difficult to separate the two components of the placentome. In the non-gravid horn a firm attachment was observed in the mid-region of the 19.5 cm fetus. By the 37 cm stage, placentomes had developed in almost all the regions of the uterus and were morphologically similar in both horns. However, there were some maternal cotyledons, especially in the extremities, which were not invaded by the fetal cotyledons. Total number of maternal cotyledons and placentomes increased from 94 at 1.2 cm crl stage to 165 at 37 cm. Largest placentomes were found in the mid-ventral region of the gravid horn. The shape of the placentomes showed wide variation, and a prominent stalk developed at the 19.5-cm crl stage. Honeycomb like cavities, conspicuous in the larger placentomes, were not seen after removal of the fetal membranes.