Morphological characteristics of the oviduct in Egyptian Balady Duck (Anas boschas domesticus) during laying cycle.

Abstract

The objective of the current study was to present baseline data on the morphology and surface architecture of the oviduct in adult female Balady duck grossly and by using scanning electron microscope (SEM). Fifteen apparently healthy adult female Balady ducks were used which weighted (2-4 kg). Two birds were formalized while the other birds were used in the fresh state for dissection then careful evisceration of the oviduct. For SEM five of the latter were used immediately after immersion in saline. Our data anatomically revealed that infundibulum had funnel and tubular parts, magnum was highly convoluted pale white or creamy color, less convoluted isthmus, dilated uterus and S-shape spiral vagina. The inner wall of the duct contains longitudinal folds in the first four parts while the vagina showed transverse thick folds. color of the mucosa was reddish in infundibulum, magnum and isthmus while greenish brown in color in the uterus and whitish yellow in the vagina. SEM showed primary and secondary folds allover the oviduct which became more thicker in the uterus and carrying tertiary folds in the vagina.

Comparative Macro Anatomical Studies on the Female Reproductive System of Kamrupa Variety and Indigenous Chicken (Gallus domesticus) of Assam during Different Stages of Laying

“…The uterus of both Indigenous chicken of Assam and Kamrupa variety was the dilated muscular portion of the oviduct with visible longitudinal folds internally, which were in concurrence with W ani et al (2017) in native chicken of Kashmir and Mahmoud et al (2018) in Egyptian Balady Duck. The mean length of the uterus in the indigenous chicken of Assam and Kamrupa variety during different stages of laying was in concurrence with the findings of Mahmoud et al (2018) who reported that the uterus measured about 4-9 cm during laying in Egyptian Balady duck. Mishra et al (2014) also reported that the length and weight of uterus was 6.10±2.80 cm and 6.80±1.32 gm respectively at 8-11 months old chicken.…”

“…This was in accordance with Dyce et al (1987) andWani et al (2017) in native chicken of Kashmir. The magnum of Egyptian Balady duck was the longest thick and creamy part of the oviduct which was convoluted and attached by dorsal and ventral oviductal ligament with average length of about 15-25 cm (Mahmoud et al, 2018). The present study revealed that the length of the magnum was significantly higher (p<0.01) during the laying period in comparison to the post-laying period in both the groups which might be due to functional inactivity of the organ.…”

“…In the present findings, a constricted portion like sphincter at the utero-vaginal junction was recorded.The vagina was the last segment observed which connected the uterus to cloaca, total average length recorded as 45.73±3.77 mm in indigenous chicken and 80.75±6.67 mm in Kamrupa variety. Mahmoud et al (2018), reported that the vaginal length measured about 3-5 cm in Egyptian Balady Duck. Mohammadpour et al (2012) recorded that the mean length of the vagina of hen and duck at the age of 1-1.5 years were 6.10±2.10 cm and 6.62±1.13 cm.…”

“…During laying period the whole length of the oviduct was voluminous and recorded to be 33-59cm and the oviduct was related rostrally to the ovary, caudally to the cloaca, dorsally to the left kidney, ventrally to the gizzard and the small intestine and to the colon from the right side. Two peritoneal folds namely dorsal and ventral oviductal ligaments kept the oviduct in position (Mahmoud et al 2018). The infundibulum of hen at the age of 150 days, 180 days and 210 days, weighed 0.87±0.14 gm, 0.87±0.16 gm and 1.0±0.3 gm with Comparative Macro Anatomical Studies on the Female Reproductive System of Kamrupa Variety and Indigenous Chicken (Gallus... a length of about 9.0±0.7 cm, 9.2±0.2 cm and 9.7±0.8 cm respectively (Khokhlov, 2008).…”

“…in chicken;Wani et al (2017) in Kashmir faverolla chicken andDyce et al (1987) in avians Mahmoud et al (2018). reported that the infundibulum of Egyptian Balady duck during the laying cycle measured about 4-8 cm in length and divided into two parts, the funnel and tubular part.…”