Issue |
BIO Web Conf.
Volume 139, 2024
International Scientific and Practical Conference “AGRONOMY – 2024” (AgriScience2024)
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Article Number | 12005 | |
Number of page(s) | 9 | |
Section | Private Zootechnics, Technology for the Production of Livestock Products | |
DOI | https://doi.org/10.1051/bioconf/202413912005 | |
Published online | 15 November 2024 |
Histological characteristics of the gastrointestinal tract organs of broilers of the Smena 8 and Cobb 500 crosses
Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, 127434, Moscow, Russia
* Corresponding author: alseryakova@mail.ru
A comparative study of the growth patterns of the layers of the digestive tube was conducted in two broiler crosses, Smena 8 and Cobb 500. Histological studies were performed on days 1, 7 and 42. Sections were stained with hematoxylin and eosin. The size of the layers was measured on sections of the glandular section of the stomach and intestine, and relative values were calculated. In the Smena 8 cross, by the end of the experiment, compared with the daily age, the relative size of the mucous membrane of the glandular section of the stomach (6.1%) and the villi of the proximal part of the cecum (5.9%) decreased, while the relative size of the submucosa of the stomach (2.3%), villi of the duodenum (1.5%) and the muscular membrane of the proximal part of the cecum (7.5%) increased. In the Cobb 500 cross, changes in these structures were in the opposite direction. The villi of the jejunum and proximal part of the cecum increased by 8.2 and 21.6%. In both crosses, the relative size of the crypt layer and the muscular plate of the mucous membrane in the jejunum and proximal part of the cecum decreased. At the age of one week, the submucosa of the glandular part of the stomach in the Cobb 500 cross increased by 9.9%. We assume that better development of the submucosa of the stomach at the beginning of life together with the development of villi of the jejunum and proximal part of the cecum contribute to more effective formation of productive qualities of broilers of the Cobb 500 cross.
© The Authors, published by EDP Sciences, 2024
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