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Morphological changes of the muscovy duckling small intestine during development

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Abstract:

The morphology of the small intestine was investigated in Muscovy ducklings before and after the hatching period using light micoscopy. The villi, crypt depth, villi : crypt (V : C) ratio, were measured in embryos on days 24 and 30 of development, on the day of hatching, and in neonates on days 2, 9 and 13 post-hatching. The height, width and perimeter (girth of villi) of small intestinal villi significantly increased with age (P < 0.05). Villi number (per transverse section of small intestine) decrease from 2 to 13 days post-hatching (P < 0.05). The crypt depth and width were significantly affected by age from hatching to 2 days of age (P < 0.05). The number of crypts increased significantly in the duodenum and jejunum between hatching and 9 days of age (P < 0.05). In the duodenum and jejunum, the V : C ratio peaked at hatching, and decreased from hatching to 2 days of age (P < 0.05). The parameters of villi and crypt of the small intestine rapidly changed between hatching and 9 days post hatch suggesting that the first week of life is a crucial step in physiological changes.

Keywords: MORPHOLOGY; MUSCOVY DUCKLING; SMALL INTESTINE; VILLI

Document Type: Research Article

DOI: http://dx.doi.org/10.3184/175815512X13265413399595

Publication date: February 1, 2012

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