MACROSCOPIC AND MICROSCOPIC STUDY OF POSTERIOR ALIMENTARY CANAL OF DIGESTIVE TRACT OF THE RUSSIAN STURGEON, ACIPENSER GULDENSTADTI

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SHEYBANI M.T.

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Journal: Journal of Veterinary Research Year:2003 | Volume:58 | Issue:1 Page(s): 45-48

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Title

MACROSCOPIC AND MICROSCOPIC STUDY OF POSTERIOR ALIMENTARY CANAL OF DIGESTIVE TRACT OF THE RUSSIAN STURGEON, ACIPENSER GULDENSTADTI

Author(s)

SHEYBANI M.T. | Issue Writer Certificate

Keywords

POSTERIORQ4

ALIMENTARY CANALQ4

RUSSIAN STURGEONQ2

HISTOLOGYQ2

Abstract

Objective: Recognizing the morphologic and microscopic structures of some parts of the G. tract which have the most important absorptive role in relation with feeding and growth of the sturgeons.Design: Descriptive study.Animals: A total number of six adult RUSSIAN STURGEONs freshly prepared from Caspian sea.Procedure: After removing the POSTERIOR parts of G. tract, they were immediately fixed in % 10 buffered formalin and transported to the laboratory. Routine procedures of HISTOLOGY were made and the paraffin sections of 5 micron were stained by Hematoxylin and Eosin. Results: The large or spiral intestine was characterized with particular spiral valves. They were lined with a pscudostratificd epithelium encircled by a connective tissue layer and strands of smooth muscle and some lymphatic nodules. A similar epithelium was present in spiral intestine's mucosa. In lamina propria and sub mucosa were some simple tubular and many large branched secular glands with I the same epithelium. Numerous secretory and granular cells were seen in this epithelium. Rectum had a pseudo stratified epithelium with brush borders and numerous goblet cells. The large glands of the previous parts were absent. The epithelium gradually changed into stratified squamous toward the anus at the end of the canal.Conclusion: Considering the presence of many goblet and secretary cells in the mucosal epithelium of these parts and also spiral valves, in some species it has been shown that the enzyme concentrations and protein levels in these parts were higher. So it is concluded that especially the spiral intestine to be the principal site of absorption I in sturgeons, this study also showed that, in this species due to presence of a highly complex mucosal structures, large absorptive areas have been provided, which is correspondent with tbe route of their feeding.

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References

HISTOLOGICAL STUDY OF INTESTINES OF ACIPENSER PERSICUS

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APA: Copy

SHEYBANI, M.T.. (2003). MACROSCOPIC AND MICROSCOPIC STUDY OF POSTERIOR ALIMENTARY CANAL OF DIGESTIVE TRACT OF THE RUSSIAN STURGEON, ACIPENSER GULDENSTADTI. JOURNAL OF VETERINARY RESEARCH, 58(1), 45-48. SID. https://sid.ir/paper/35071/en

Vancouver: Copy

SHEYBANI M.T.. MACROSCOPIC AND MICROSCOPIC STUDY OF POSTERIOR ALIMENTARY CANAL OF DIGESTIVE TRACT OF THE RUSSIAN STURGEON, ACIPENSER GULDENSTADTI. JOURNAL OF VETERINARY RESEARCH[Internet]. 2003;58(1):45-48. Available from: https://sid.ir/paper/35071/en

IEEE: Copy

M.T. SHEYBANI, “MACROSCOPIC AND MICROSCOPIC STUDY OF POSTERIOR ALIMENTARY CANAL OF DIGESTIVE TRACT OF THE RUSSIAN STURGEON, ACIPENSER GULDENSTADTI,” JOURNAL OF VETERINARY RESEARCH, vol. 58, no. 1, pp. 45–48, 2003, [Online]. Available: https://sid.ir/paper/35071/en

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