Histomorphometrical and Histochemical Study of Caecum in Adult Muscovy Ducks (Cairina moschata)
Histomorphometrical and Histochemical Study of Caecum in Adult Muscovy Ducks (Cairina moschata)
Thekra Fadel Saleh, Omar Younis Altaey*
ABSTRACT
Muscovy ducks are becoming an increasingly important source of food worldwide. Caecal microbial digestion is crucial for the growth and maintenance of the health in these birds. The main objective of this study is to understand the anatomy, histology, histochemistry, and distribution of lymphoid tissue in the caeca of Muscovy ducks. Samples from eight healthy adult Muscovy ducks (Cairina moschata) were fixed, processed, sectioned, and stained with Hematoxylin and Eosin as well as Periodic Acid Schiff: Alcian blue pH 2.5 and toluidine blue stains for histochemical analysis. Dissecting microscope measurements and histological measures were taken, and immunohistochemical analysis was performed to evaluate B lymphocyte distribution. The study found that in Muscovy ducks, the left caecum was longer and heavier than the right caecum, and the proximal portion of both caeca was wider and had thicker walls compared to the middle and distal portions. Histologically, the length of villi and depth of crypts were greater in the proximal portion compared to the middle and distal portions. Histochemical analysis showed that acidic glycoprotein was dominant in the villi and crypts, with higher density in the middle portion compared to the proximal and distal portions. The density of glycosaminoglycans was also higher in goblet cells at the basal crypts compared to longitudinal crypts. Immunohistochemical analysis revealed higher levels of lymph follicles and B lymphocytes in the proximal portion compared to the middle and distal portions. The complex architecture suggests that caeca in Muscovy duck play a significant role in microbial digestion and immunological functionality and Insight into caecal morphology enhance bird’s productivity and health.
Keywords | Biochemical, Food security, Histology, Histochemistry, Histomorphometry, Muscovy ducks
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June 2023
Adv. Anim. Vet. Sci., Vol. 11, Iss. 6, pp. 864-1036
