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Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 2002;15(7): 1018-1021.
https://doi.org/10.5713/ajas.2002.1018    Published online January 1, 2002.
Studies on the Fine Structure of Caeca in Domestic Geese
Yieng How Chen, Hoang Kao Hsu, Jenn Chung Hsu
Abstract
The objective of this study was to investigate the villus distribution in the caeca of domestic geese based on the fine structure. The caeca of White Roman geese, 14-week old, were sampled and specimens were detected under photomicroscope and scanning electron microscope (SEM). The results indicated that the villi existed at the proximal caecum. The morphologies of these villi showed finger-like, peak-like or tongue-like shapes. The heights of the villi decreased far from the proximal caecum. No villi were found in the middle and distal caecum. It was obvious that the proximal segment was the main portion for absorbing food nutrients in the caeca. The caecal content particles were small and possessed a viscid character. The large particles filtered out at the proximal caecum just like a mesh. The surface of the middle caecum exhibited parallel ridges with no villi. There were band plicae circular shapes found in the middle caecum under scanning electron microsopy.
Keywords: Caecum; Scanning Electron Microscopy; Villi
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