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Oviduct Histopathology of Internal Laying and Egg-Bound Syndrome in Laying Hens

Authors :
Marina Hosotani
Sohei Hamano
Tomohito Iwasaki
Yasuhiro Hasegawa
Hiromi Ueda
Takafumi Watanabe
Source :
Veterinary Sciences, Vol 10, Iss 4, p 260 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

In the egg industry, common reproductive disorders, such as internal laying and egg-bound syndrome, not only reduce egg productivity but also cause deaths in severe cases. In this study, we focused on the oviduct histology of the pathogenesis of internal laying and egg-bound syndrome. We divided the aged laying hens into four groups according to the observation of the abdominal cavity and oviductal lumen: healthy, internal laying, egg-bound, and intercurrent. The percentages of healthy, internal laying, egg-bound, and intercurrent groups were 55%, 17.5%, 15%, and 12.5%, respectively. In all parts of the oviduct (i.e., infundibulum, magnum, isthmus, and uterus), the oviductal epithelium was composed of ciliated epithelial cells and secretory cells. The epithelial region lacking cilia was larger in the entire oviduct of the internal laying, and intercurrent groups than in the healthy group. In the internal laying, egg-bound, and intercurrent groups, significant T-cell infiltration was observed in the lamina propria of the entire oviduct. The morphological alteration of ciliated epithelial cells in the oviducts caused by inflammation may be the underlying cause of the pathogenesis of internal laying and egg-bound syndrome.

Details

Language :
English
ISSN :
23067381
Volume :
10
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Veterinary Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.5ebc8674cccc471bba4981d06cdbc592
Document Type :
article
Full Text :
https://doi.org/10.3390/vetsci10040260