Spiked poultry meat
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB30886 | ENA |
REPOSITORIES: ENA
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Project description:The objective of this study was to determine differential gene expression of turkey breast muscle regarding development of PSE meat defect. Genetically unimproved, random-bred (RBC2) turkeys representing turkeys from 1966, which are smaller and grow slower than modern turkeys, were raised at the Michigan State University (MSU) Poultry farm and harvested at 22 week of age. Breast meat was collected and snap frozen in liquid nitrogen. Percent marinade uptake at 24h post-slaughter of each sample was determined. The highest (n=6) and the lowest (n=6) marinade uptake were classified as normal and PSE, respectively. Differentially expressed genes between normal and PSE was identified using TSMLO microarray and confirmed by qRT-PCR. Forty-one oligos were differentially expressed (false discovery rate, FDR<0.1). Candidate genes and pathways associated with development of PSE in turkey were suggested for further experiment to gain greater comprehension about this meat quality defect.
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Project description:The objective of this study was to determine differential gene expression of turkey breast muscle regarding development of PSE meat defect. Genetically unimproved, random-bred (RBC2) turkeys representing turkeys from 1966, which are smaller and grow slower than modern turkeys, were raised at the Michigan State University (MSU) Poultry farm and harvested at 22 week of age. Breast meat was collected and snap frozen in liquid nitrogen. Percent marinade uptake at 24h post-slaughter of each sample was determined. The highest (n=6) and the lowest (n=6) marinade uptake were classified as normal and PSE, respectively. Differentially expressed genes between normal and PSE was identified using TSMLO microarray and confirmed by qRT-PCR. Forty-one oligos were differentially expressed (false discovery rate, FDR<0.1). Candidate genes and pathways associated with development of PSE in turkey were suggested for further experiment to gain greater comprehension about this meat quality defect. Two-condition experiment: normal vs PSE; Biological replicate: n=6 for each condition; Birds were randomly assigned to an array and hybridizations were performed in random order.
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Project description:Improvement of feed efficiency would increase profitability of the poultry industries by decreasing the amount of feed required for production. Korat (KR) chicken is a new alternative meat-type chicken breed which its meat is recognized for its high protein, low fat and low purine content, whereas its low feed efficiency leads to high cost of production. Deeper understanding on how feed efficiency influences meat quality is poorly elucidated. To fulfill deeper understand molecular key that point the variation in feed efficiency and meat quality, the aim of this study was to investigate molecular pathways and genes involved in feed efficiency and meat quality in thigh of slow-growing KR chicken. A total of 75 males KR chicken were reared in individual cage until 10 weeks of age. Individual feed intake and body weight were collected weekly to calculate Feed Conversion Ratio (FCR) and Residual Feed Intake (RFI). Meat quality parameters were measured in thigh muscles such as ultimate pH (pHu), water-holding capacity (WHC), drip loss (DL), nucleotides content and several biomolecules (amide, …). Base on extreme values of FCR at 10 weeks of ages, 12 birds from the high FCR group (HFCR) and 9 birds from the low FCR group (LFCR) were selected for investigating their transcriptome using an 8×60K Agilent chicken microarray. In addition, a weighted gene coexpression network analysis was performed to detect the relationship between modules of co-expressed genes and feed efficiency, meat quality in thigh muscle. The result in this study indicated that selection on feed efficiency (FCR, RFI) would affect flavor precursor, lipid and protein content in thigh muscle. Based on WGCNA and functional enrichment analysis, results suggested that the key molecular pathways relate to FCR, RFI and meat quality (WHC, DL, IMP, AMP and inosine) in thigh muscle were the pathways of regulation of biological process, biological regulation and regulation of metabolic. Moreover, we revealed four genes there are assembly competence domain (ACD) gene, baculoviral IAP repeat containing 5 (BIRC5) gene, cytochrome c oxidase assembly factor 3 (COA3) gene and myosin light chain 9 (MYL9) gene that might be biomarker gene in feed efficiency and meat quality in thigh muscle. The hypothesis of the current study was alteration feed efficiency in slow-growing chicken will impact meat quality especially in term of texture and flavor.
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2013-09-04 | GSE50538 | GEO
Project description:To find a promoter upregulated in the presence of rotten meat, we exposed B. subtilis 168 to the volatiles of rotten meat (mixed beef/pork) and performed a microarray comparing it to B. subtilis which was not exposed to the meat. The results where used to build iGEM Groningen 2012s Food Warden, a spoiled meat detector. Find more information at: 2012.igem.org/Team:Groningen One condition design; including dye swap, two technical replicates and two experimental replicates
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