Anatomical Studies on the sperm storage organ of Pati and Chara-Chemballi Ducks

The present investigation was conducted on the comparative anatomical study of vagina (sperm storage organ) of Pati and Chara-Chemballi ducks during laying periods. The vagina was collected immediately after death and anatomical studies were made on it. The vagina was a narrow muscular tube, sharply curved and was tightly bound by ligament. The length, width thickness and weight of vagina of Chara-Chemballi ducks were significantly (p<0.01) higher than Pati duck. The lining epithelium consisted of pseudostratified columnar epithelial cells with few goblet cells. The mean height of lamina epithelialis mucosae of vagina of the present study was significantly (p<0.01) higher in Chara-Chemballi duck (26.508±0.298 µm) than Pati duck (23.058±0.330 µm). A weak PAS positive reaction was noticed in the lining epithelium of vagina of Pati and Chara-Chembali ducks.