Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1298574 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:An experiment was conducted to investigate the effects of dietary inclusion of rye, a model ingredient to increase gut viscosity, between 14 and 28 days of age on immune competence related parameters and performance of broiler. A total number of 960 one-day-old male Ross 308 chicks were weighed and randomly allocated to 24 pens (40 birds per pen), and the birds in every 8 replicate pens were assigned to one of three experimental diets including graded levels, 0%, 5%, and 10% of rye. Tested immune competence related parameters were composition of the intestinal microbiota, genes expression in gut tissue, and gut morphology. The inclusion of 5% or 10% rye in the diet (d14-28) resulted in decreased performance and litter quality, but in increased villus height and crypt depth in the small intestine (jejunum) of the broilers. Relative bursa and spleen weights were not affected by dietary inclusion of rye. In the jejunum, no effects on number and size of goblet cells, and only trends on microbiota composition in the digesta were observed. Dietary inclusion of rye affected expression of genes involved in cell cycle processes of the jejunal enterocyte cells, thereby influencing cell growth, cell differentiation and cell survival, which in turn were consistent with the observed differences in the morphology of the gut wall. In addition, providing rye-rich diets to broilers affected the complement and coagulation pathways, which are parts of the innate immune system. These pathways are involved in eradicating invasive pathogens. Overall, it can be concluded that inclusion of 5% or 10% rye to the grower diet of broilers had limited effects on performance. Ileal gut morphology, microbiota composition of jejunal digesta, and gene expression profiles of jejunal tissue, however, were affected by dietary rye inclusion level, indicating that rye supplementation to broiler diets might affect immune competence of the birds.
2017-04-19 | GSE94095 | GEO
Project description:RNA N6-melthyladenosine has been suggested to play important roles in various biological processes. Chicken ovary development is a process controlled by complex gene regulations. In this study, transcriptome-wide m6A methylation of the Wuhua yellow-feathered chicken ovaries before and after sexual maturation was profiled to identify potential molecular mechanisms underlying chicken ovary development. The results showed that m6A levels of mRNAs changed dramatically during sexual maturity. A total of 1476 differential m6A peaks were found between these two stages with 662 significantly up-regulated methylation peaks and 814 down-regulated methylation peaks after sexual maturation. A positive correlation was found between the m6A peaks and gene expression levels. Functional enrichment analysis indicated that apoptosis related pathways might be the key molecular regulatory pathway underlying the poor reproductive performance of Wuhua yellow-feathered chicken. The fine expressional regulation of genes related to follicles development and follicle atresia controlled by m6A during the maturity results in the poor reproductive performance in the Wuhua yellow-feathered chicken. However, the regulatory mechanisms are still unclear, thus more further studies are required. The pathways and corresponding candidate genes found here may be useful for molecular design breeding for improving egg production performance in Chinese local chicken breed, and it will also benefit for the genetic resource protection of valuable avian species.
2023-11-01 | GSE239644 | GEO
Project description:The aim of this study was to explore whether, and if so, how Bacillus subtilis KC1 can enhance the growth performance of broilers that have been adversely affected by Mycoplasma gallisepticum (MG) infection. A total of 96 1-day-old male broilers were randomly divided into 4 groups: the control group (basal diet), the MG group (basal diet + MG challenge), the Bacillus subtilis KC1 group (basal diet + Bacillus subtilis KC1 supplementation), the Bacillus subtilis KC1 + MG group (basal diet + Bacillus subtilis KC1 supplementation + MG challenge). The trial lasted 42 days, and the results showed that the MG group had significantly reduced body weight and average daily gain, as well as increased feed conversion ratio of broilers, compared to the control group. Dietary supplementation with Bacillus subtilis KC1 significantly improved the growth performance of MG-infected broilers. In addition, dietary supplementation with Bacillus subtilis KC1 significantly improved oxidative stress and inflammatory response markers, characterized by increased superoxide dismutase levels and reduced levels of malondialdehyde, interleukin-1β, and tumor necrosis factor-α. Furthermore, both metabolomics and transcriptomics analyses indicated that MG infection markedly disrupted amino acid metabolism in broilers, whereas Bacillus subtilis KC1 supplementation alleviated the abnormal amino acid metabolism caused by MG infection. These results suggested that Bacillus subtilis KC1 may alleviate the poor growth performance caused by MG infection in broilers by improving amino acid metabolism.
2024-10-23 | GSE273913 | GEO
Project description:Functional microRNA (miRNA) screening for abdominal fat tissue with different dietary vitamin E (VE) levels was performed in broilers.
2020-12-01 | GSE142263 | GEO