1. Ileal Transcriptome Profiles of Japanese Quail Divergent in Phosphorus Utilization
- Author
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Michael Oster, Henry Reyer, Nares Trakooljul, Frank M. Weber, Lu Xi, Eduard Muráni, Siriluck Ponsuksili, Markus Rodehutscord, Jörn Bennewitz, and Klaus Wimmers
- Subjects
phosphorus use ,intestinal expression profiles ,fowl ,quail physiology ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Phosphorus (P) is an essential component for all living beings. Low P diets prompt phenotypic and molecular adaptations to maintain P homeostasis and increase P utilization (PU). Knowledge of the molecular mechanisms of PU is needed to enable targeted approaches to improve PU efficiency and thus lower P excretion in animal husbandry. In a previous population study, Japanese quail were subjected to a low P diet lacking mineral P and exogenous phytase. Individual PU was determined based on total P intake and excretion. A subset of 20 extreme siblings discordant for PU was selected to retrieve gene expression patterns of ileum (n = 10 per PU group). Sequencing reads have been successfully mapped to the current Coturnix japonica reference genome with an average mapping rate of 86%. In total, 640 genes were found to be differentially abundant between the low and high PU groups (false discovery rate ≤ 0.05). Transcriptional patterns suggest a link between improved PU and mitochondrial energy metabolism, accelerated cell proliferation of enterocytes, and gut integrity. In assessing indicators of the efficient use of macro- and micronutrients, further research on turnover and proliferation rates of intestinal cells could provide an approach to improve P efficiency in poultry species.
- Published
- 2020
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