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Xylo-oligosaccharides and virginiamycin differentially modulate gut microbial composition in chickens
Download2015
Zhao, Xin, Pourabedin, Mohsen, Guan, Leluo
Background The emergence and spread of antibiotic resistance in pathogens have led to a restriction on the use of antibiotic growth promoters (AGPs) in animal feed in some countries. The potential negative after-effects of a ban on AGPs could be mitigated by improving animal intestinal health...
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Transcriptome microRNA profiling of bovine mammary epithelial cells challenged with Escherichia coli or Staphylococcus aureus bacteria reveals pathogen directed microRNA expression profiles
Download2014
Zhao, Xin, Liang, Guanxiang, Jin, Weiwu, Guan, Leluo, Beaudoin, Frédéric, Ibeagha-Awemu, Eveline M.
Background MicroRNAs (miRNAs) can post-transcriptionally regulate gene expression and have been shown to be critical regulators to the fine-tuning of epithelial immune responses. However, the role of miRNAs in bovine responses to E. coli and S. aureus, two mastitis causing pathogens, is not well...
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The gut microbiome and its potential role in the development and function of newborn calf gastrointestinal tract
Download2015
Grebiel, Philip J., Malmuthuge, Nilusha, Guan, Leluo
A diverse microbial population colonizes the sterile mammalian gastrointestinal tract during and after the birth. There is increasing evidence that this complex microbiome plays a crucial role in the development of the mucosal immune system and influences newborn health. Microbial colonization is...
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Taxonomic assessment of rumen microbiota using total RNA and targeted amplicon sequencing approaches
Download2016
Janssen, Peter H., Li, Fuyong, Sun, Xu, Cox, Faith, Guan, Leluo, Henderson, Gemma
Taxonomic characterization of active gastrointestinal microbiota is essential to detect shifts in microbial communities and functions under various conditions. This study aimed to identify and quantify potentially active rumen microbiota using total RNA sequencing and to compare the outcomes of...
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Reducing GHG emissions through genetic improvement for feed efficiency: Effects on economically important traits and enteric methane production
Download2013
Baron, Vern S., Ominski, Kim H., Guan, Leluo, Basarab, John A., Beauchemin, Karen A., Miller, Stephen P.
Genetic selection for residual feed intake (RFI) is an indirect approach for reducing enteric methane (CH4) emissions in beef and dairy cattle. RFI is moderately heritable (0.26 to 0.43), moderately repeatable across diets (0.33 to 0.67) and independent of body size and production, and when...
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Potential regulatory role of microRNAs in the development of bovine gastrointestinal tract during early life
Download2014
Liang, Guanxiang, Bao, Hua, Guan, Leluo, Griebel, Philip J., Stothard, Paul, McFadden, Thomas B., Malmuthuge, Nilusha
This study aimed to investigate the potential regulatory role of miRNAs in the development of gastrointestinal tract (GIT) during the early life of dairy calves. Rumen and small intestinal (mid-jejunum and ileum) tissue samples were collected from newborn (30 min after birth; n = 3), 7-day-old...
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2011
Bergen, Werner G., Fernyhough, Melinda E., Hausman, Gary J., Dodson, Mike V., Du, Min, Mir, Priya S., Guan, Leluo, Jiang, Zhihua
Obesity and metabolic syndromes are examples whereby excess energy consumption and energy flux disruptions are causative agents of increased fatness. Because other, as yet elucidated, cellular factors may be involved and because potential treatments of these metabolic problems involve systemic...
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2014
Jin, Weiwu, He, Maolong, Guan, Leluo, Romao, Josue M., McAllister, Tim
Background MicroRNAs (miRNAs) are small non-coding RNAs found to regulate several biological processes including adipogenesis. Understanding adipose tissue regulation is critical for beef cattle as fat is an important determinant of beef quality and nutrient value. This study analyzed the...
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Microarray analysis in caudal medulla of cattle orally challenged with bovine spongiform encephalopathy
Download2011
Williams, John L., Moore, Stephen S., Almeida, Luciane M., Basu, Urmila, Guan, Leluo
Bovine spongiform encephalopathy (BSE) is a fatal disorder in cattle characterized by progressive neurodegeneration of the central nervous system. We investigated the molecular mechanisms involved in neurodegeneration during prion infection through the identification of genes that are...
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Initial differences in lipid processing leading to pig- and beef-derived mature adipocyte dedifferentiation
Download2009
Fernyhough, Melinda E., Hausman, Gary J., Guan, Leluo, Guridi, Maitea, Jiang, Zhihua, Dodson, Michael V., Chen, Jie
Clonal cultures of pig-derived mature adipocytes are capable of dedifferentiating and forming proliferative-competent progeny cells in vitro. Initial lipid processing, is different to that observed in cultures of beef-derived adipocytes. Mature pig adipocytes extrude lipid before proliferation,...