Publikationsdatenbank

Morphometric evaluation of the intestine and its interpretation:
Comparison between a dual-purpose and a conventional chicken line (2019)

Art

Vortrag

Autoren

Alshamy, Zaher (WE 1)

Hünigen, Hana (WE 1)

Hafez, Hafez M. (WE 15)

Plendl, Johanna (WE 1)

Al-Masri, Salah (WE 1)

Kongress

The 10th meeting of Young Generation of Veterinary Anatomists

Bukarest, 24. – 26.07.2019

Quelle

Proceedings of "The 10th Meeting of the Young Generation of Veterinary Anatomists – YGVA 2019" : July 24 - 26, 2019 : București, România — University of Agronomic Sciences and Veterinary Medicine of Bucharest (Hrsg.)

București, România: Ex Terra Aurum, 2019 — S. 34–35

ISBN: 978-606-8974-15-6

Sprache

Englisch

Verweise

URL (Volltext): https://ygva2019.usamv.ro/ygva-files/YGVA%202019%20Proceedings.pdf

Kontakt

Nutztierklinik: Abteilung Geflügel

Königsweg 63
14163 Berlin
+49 30 838 62676
gefluegelkrankheiten@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Introduction:
Digestion, absorption and the barrier functions of the intestine can be evaluated by specific morphometric parameters. Intestinal length, enlargement of the mucosal surface area, villus length, epithelial height and the microvilli length of the intestinal mucosa are indicatorsfor digestion and absorption efficiency. The crypts ́ depth is a parameter for the intestinal secretory potential. The thickness of the tunica muscularis serves as an indicator of motility and transport of the ingesta. The status of the intestinal junctional complexes signals intestinal barrier functions. In this study, the intestines of the dual-purpose chickens Lohmann Dual (LD) and the broiler chicken line (Ross 308).were histologically and electron microscopically examined and compared.

Materials and Methods:
Sixty-six (LD) and 54 (Ross) chickens were kept for 9 respectively 5 weeks. Every week 6 chickens from each line were weighed and then euthanized. Samples of jejunum and ileum were histologically examined. The intestinal length, the villus and epithelial height, the crypts ́ depth, the enlargement factor of the intestinal mucosal surface and the thickness of the tunica muscularis were measured. Samples of jejunum were processed through transmission electron microscopy and the junctional complex and microvilli length were measured. The data was examined using the Mann–Whitney test.

Results and Discussions:
Ross chickens grew faster than LD chickens over the study period. Given the same body weight, LD chickens have a shorter intestine and a smaller mucosal surface area per unit of mucosa muscularis length compared to Ross chickens. This suggests a reduced absorption potential of LD chicken’s intestine. Furthermore, the intestinal tunica muscularis of the LD chickens was thicker than the one of Ross chickens which may enhance the peristaltic movement and digesta transport. The shorter intestine of LDs combined with thicker tunica muscularis could lead to a shorter intestinal passage time, subsequently, a lower uptake of available nutrients compared to Ross chickens.

Conclusion:
Our results revealed differences in morphometric measurements between two the chicken lines which could be related to the slow growth rate of LD chickens. These differences should be considered in the feeding strategies and further selection of the LD chickens.