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Transcriptome profile analysis of breast muscle tissues from high or low levels of atmospheric ammonia exposed broilers (Gallus gallus)

ABSTRACT: Abstract: Atmospheric ammonia is a common problem in poultry industry. High concentrations of aerial ammonia cause great harm to broilers' health and production. For the consideration of human health, the limit exposure concentration of ammonia in houses is set at 25 ppm. Previous reports have shown that 25 ppm is still detrimental to livestock, especially the gastrointestinal tract and respiratory tract, but the negative relationship between ammonia exposure and the tissue of breast muscle of broilers is still unknown. In the present study, 25 ppm ammonia in poultry houses was found to lower slaughter performance and breast yield. Then, high-throughput RNA sequencing was utilized to identify differentially expressed genes in breast muscle of broiler chickens exposed to high (25 ppm) or low (3 ppm) levels of atmospheric ammonia. The transcriptome analysis showed that 163 genes (fold change ≥ 2 or ≤ 0.5; P-value < 0.05) were differentially expressed between Ammonia25 (treatment group) and Ammonia3 (control group), including 96 down-regulated and 67 up-regulated genes. qRT-PCR analysis validated the transcriptomic results of RNA sequencing. Gene Ontology (GO) functional annotation analysis revealed potential genes, processes and pathways with putative involvement in growth and development inhibition of breast muscle in broilers caused by aerial ammonia exposure. This study facilitates understanding of the genetic architecture of the chicken breast muscle transcriptome, and has identified candidate genes for breast muscle response to atmospheric ammonia exposure.

ORGANISM(S): Gallus gallus

PROVIDER: GSE85786 | GEO | 2016/08/19

SECONDARY ACCESSION(S): PRJNA339392

REPOSITORIES: GEO

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Transcriptome profile analysis of breast muscle tissues from high or low levels of atmospheric ammonia exposed broilers (Gallus gallus)

Project description:Abstract: Atmospheric ammonia is a common problem in poultry industry. High concentrations of aerial ammonia cause great harm to broilers' health and production. For the consideration of human health, the limit exposure concentration of ammonia in houses is set at 25 ppm. Previous reports have shown that 25 ppm is still detrimental to livestock, especially the gastrointestinal tract and respiratory tract, but the negative relationship between ammonia exposure and the tissue of breast muscle of broilers is still unknown. In the present study, 25 ppm ammonia in poultry houses was found to lower slaughter performance and breast yield. Then, high-throughput RNA sequencing was utilized to identify differentially expressed genes in breast muscle of broiler chickens exposed to high (25 ppm) or low (3 ppm) levels of atmospheric ammonia. The transcriptome analysis showed that 163 genes (fold change â?¥ 2 or â?¤ 0.5; P-value < 0.05) were differentially expressed between Ammonia25 (treatment group) and Ammonia3 (control group), including 96 down-regulated and 67 up-regulated genes. qRT-PCR analysis validated the transcriptomic results of RNA sequencing. Gene Ontology (GO) functional annotation analysis revealed potential genes, processes and pathways with putative involvement in growth and development inhibition of breast muscle in broilers caused by aerial ammonia exposure. This study facilitates understanding of the genetic architecture of the chicken breast muscle transcriptome, and has identified candidate genes for breast muscle response to atmospheric ammonia exposure. Breast muscle mRNA profiles of 42-day old Arbor Acres male broilers exposed to 3 ppm (Ammonia3) and 25 ppm (Ammonia25) concentrations of atmospheric ammonia were generated by RNA sequencing, in duplicate, using Illumina HiSeq2000.

2016-08-19 | E-GEOD-85786 | biostudies-arrayexpress

Identification of candidate genes associated with breast muscle of broilers exposed to atmospheric ammonia using RNA sequencing

Project description:Abstract: Ammonia is one of the most prominent air pollutants in poultry houses. High levels of ammonia have adverse effects on respiratory health, growth performance, meat production of broilers, and breast meat growth and yield are critical important in the broiler industry. To date, studies focus on the negative relationship of ammonia exposure and breast muscle tissue are still very limited, and the underlying molecular mechanisms remain poorly understood. In this study, high concentrations of atmospheric ammonia were found to lower slaughter rate and broiler breast meat yield significantly (P < 0.05). To explore the candidate genes that ammonia regulates breast meat yield of broilers, high throughout RNA-Seq was used to compare the transcriptome of breast muscle with different ammonia exposure (50 ppm vs 3 ppm). In total, 129 differentially expressed genes (DEGs) were identified (P-value < 0.05; fold-change ≥ 2), among which 87 genes were significantly down-regulated and 42 were up-regulated. Bioinformatics analysis suggested that DEGs (such as PDK4, ACSL1, GLUL, FBXO32) were involved in fatty acid degradation/metabolism, nitrogen metabolism, PPAR signaling and adipocytokine signaling pathways. Functional annotation showed that DEGs were mainly enriched in reactive oxygen species metabolic process and muscle contraction. It can be concluded that decreased meat yield was due to the DEGs participating in above biological processes and pathways. This study provides novel insights into transcriptional differences in breast meat between high- and low-ammonia exposed broiler chickens.

2017-10-14 | GSE104941 | GEO

High Concentrations of Atmospheric Ammonia Induce Alterations of Gene Expression in the Breast Muscle of Broilers (Gallus gallus) Based on RNA-Seq

Project description:Background: High concentrations of atmospheric ammonia are one of the key environmental stressors affecting broiler production performance, which causes remarkable economic losses as well as potential welfare problems of the broiler industry. Previous reports have demonstrated that high levels of ammonia can alter body fat distribution and meat quality of broilers. However, the molecular mechanisms and metabolic pathways in breast muscle altered by high concentrations of ambient ammonia exposure on broilers are still unknown. Results: This study utilized RNA-Seq to compare the transcriptomes of breast muscles to identify differentially enriched genes in broilers exposed to high or low concentrations of atmospheric ammonia. A total of 267 promising candidate genes were identified by differential expression analysis, among which 67 genes were up-regulated and 189 genes were down-regulated. Bioinformatics analysis suggested that the up and down-regulated genes were involved in the following two categories of cellular pathways and metabolisms: Steroid biosynthesis (gga00100) and peroxisome proliferator-activated receptor (PPAR) signaling pathway (gga03320), which both participate in the lipid metabolism processes. Conclusions: This study suggests that longtime exposure to high concentrations of aerial ammonia can change fat content in breast muscle, meat quality and palatability via altering expression levels of genes participating in important lipid metabolism pathways. This study maybe provides new information that could be used for genetic breeding and nutritional intervention in production practice of broilers industry in the future.

2016-07-10 | GSE84099 | GEO

High concentrations of atmospheric ammonia induce alterations in the hepatic proteome of broilers (Gallus gallus): An iTRAQ-based quantitative proteomic analysis

Project description:With the development of the poultry industry, ammonia, as a main contaminant in the air, is causing increasing problems with broiler health. To date, most studies of ammonia toxicity have focused on the nervous system and the gastrointestinal tract in mammals. However, few detailed studies have been conducted on the hepatic response to ammonia toxicity in poultry. The molecular mechanisms that underlie these effects remain unclear. In the present study, our group applied isobaric tags for relative and absolute quantitation (iTRAQ) - based quantitative proteomic analysis to investigate changes in the protein profile change in hepatic tissue of broilers exposed to high concentrations of atmospheric ammonia, with the goal of characterizing the molecular mechanisms of chronic liver injury from exposure to high ambient levels of ammonia. Overall, 30 differentially expressed proteins that are involved in nutrient metabolism (energy, lipid and amino acid), immune response, transcriptional and translational regulation, stress response and detoxification were identified. In particular, two of these proteins, beta-1 galactosidase (GLB1), and a kinase (PRKA) anchor protein 8-like (AKAP8 L), were previously suggested to be potential biomarkers of chronic liver injury. In addition to the changes in the protein profile, serum parameters and histochemical analyses of hepatic tissue also showed extensive hepatic damage in ammonia-exposed broilers. Altogether, these findings suggest that longtime exposure to high concentrations of atmospheric ammonia can trigger chronic hepatic injury in broilers via different mechanisms, providing new information that can be used for intervention using nutritional strategies in the future.

2016-06-15 | PXD001670 | Pride

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Project description:Transcriptome profile analysis of breast muscle tissues from high or low levels of atmospheric ammonia exposed broilers (Gallus gallus)

| PRJNA339392 | ENA

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Project description:High Concentrations of Atmospheric Ammonia Induce Alterations of Gene Expression in the Breast Muscle of Broilers (Gallus gallus) Based on RNA-Seq

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Effects of atmospheric ammonia on the production performance, serum biochemical indices, and liver RNA-seq data of laying ducks

Project description:The liver is the largest detoxification organ in the human body. RNA sequencing (RNA-seq) analyses of liver samples were performed to investigate the effects of high ammonia levels (ammonia exposure at 75 ± 5 ppm), a low ammonia level (ammonia exposure at 5 ± 5 ppm) was set as control group, on the metabolism and detoxification capabilities of laying ducks.

2020-02-08 | GSE144924 | GEO

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Project description:Identification of candidate genes associated with breast muscle of broilers exposed to atmospheric ammonia using RNA sequencing

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