The embryonic development of the bovine stomach revisited.

Kalenberg, Christina Alexandra; Stoffel, Michael Hubert (2020). The embryonic development of the bovine stomach revisited. Anatomia, histologia, embryologia, 49(2), pp. 270-280. Wiley 10.1111/ahe.12525

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The adult anatomy and physiology of the bovine (Bos taurus) stomach have been investigated extensively. Despite the many studies, however, the early development of the stomach has not yet been fully elucidated. The goal of the present study, therefore, was to review the available literature, to visualize the embryonic and early foetal development of the bovine stomach and to shed light on unresolved issues. The stomachs of fifteen bovine embryos and eleven foetuses from 26 to 80 days of gestation were photographed both in situ and after exenteration and critical point drying. A series of photographs was obtained that yielded a contiguous and comprehensive view of all the developmental changes that occurred until the virtually final configuration of the stomach was attained. In addition, the serosal surface was studied by electron microscopy, thus revealing subtle regional differences in the lining of the peritoneal cavity. Our observations corroborate the contention that all the compartments evolve from the fusiform primordium and that no outgrowth at the level of the oesophagus occurs. The greater curvature as well as the attachment line of the dorsal mesogastrium shift to the left, which is similar to the process in monogastrians. The rumen and reticulum develop from separate protrusions, and further compartmentalization results from constrictions and bulges and not from folding. Between 55 and 60 days of gestation, the entire bovine stomach except for the abomasum eventually relocates to its final position. In summary, previously debated key issues were addressed and integrated with current findings.

Item Type:

Journal Article (Original Article)

Division/Institute:

09 Interdisciplinary Units > Microscopy Imaging Center (MIC)
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Veterinary Anatomy

UniBE Contributor:

Kalenberg, Christina Alexandra and Stoffel, Michael Hubert

Subjects:

500 Science
500 Science > 570 Life sciences; biology
500 Science > 590 Animals (Zoology)

ISSN:

0340-2096

Publisher:

Wiley

Language:

English

Submitter:

Vanessa Alice Blum

Date Deposited:

01 Apr 2020 08:28

Last Modified:

01 Apr 2020 08:28

Publisher DOI:

10.1111/ahe.12525

PubMed ID:

31877582

Uncontrolled Keywords:

bovine embryology morphogenesis photomicrography scanning electron microscopy stomach

BORIS DOI:

10.7892/boris.142473

URI:

https://boris.unibe.ch/id/eprint/142473

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