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Genetics and Genomics Commons™

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2018

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Articles 481 - 510 of 616

Full-Text Articles in Genetics and Genomics

47472 (Gmr16g02), Neha Gogia, Ankita Sarkar, Amit Singh Jan 2018

47472 (Gmr16g02), Neha Gogia, Ankita Sarkar, Amit Singh

Dpp Enhancer Sequences Utilized in GMR Line

dpp enhancer - 47472

  • Id - GMR16G02
  • Location 2L:2425041, 2428154
  • Base pairs – 3113 bp


48770 (Gmr17e04), Neha Gogia, Ankita Sarkar, Amit Singh Jan 2018

48770 (Gmr17e04), Neha Gogia, Ankita Sarkar, Amit Singh

Dpp Enhancer Sequences Utilized in GMR Line

dpp enhancer - 48770

  • Id - GMR17E04
  • Location 2L: 2428913..2432834
  • Base pairs – 3921 bp


Methylation-Based Enrichment Facilitates Low-Cost, Noninvasive Genomic Scale Sequencing Of Populations From Feces, Kenneth L. Chiou, Christina M. Bergey Jan 2018

Methylation-Based Enrichment Facilitates Low-Cost, Noninvasive Genomic Scale Sequencing Of Populations From Feces, Kenneth L. Chiou, Christina M. Bergey

United States Public Health Resources

Obtaining high-quality samples from wild animals is a major obstacle for genomic studies of many taxa, particularly at the population level, as collection methods for such samples are typically invasive. DNA from feces is easy to obtain noninvasively, but is dominated by bacterial and other non-host DNA. The high proportion of non-host DNA drastically reduces the efficiency of high-throughput sequencing for host animal genomics. To address this issue, we developed an inexpensive capture method for enriching host DNA from noninvasive fecal samples. Our method exploits natural differences in CpG-methylation density between vertebrate and bacterial genomes to preferentially bind and isolate …


Triennial Reproduction Symposium: Looking Back And Moving Forward—How Reproductive Physiology Has Evolved, Deb L. Hamernik, Andrea S. Cupp, John S. Davis Jan 2018

Triennial Reproduction Symposium: Looking Back And Moving Forward—How Reproductive Physiology Has Evolved, Deb L. Hamernik, Andrea S. Cupp, John S. Davis

Department of Animal Science: Faculty Publications

In honor of the 50th anniversary of the Society for the Study of Reproduction (SSR), a Triennial Reproduction Symposium was cosponsored by SSR and the American Society of Animal Science (ASAS). The Society for the Study of Reproduction was formed in 1967 when a group of reproductive biologists that were members of ASAS met with physician scientists and decided to organize a new scientific society. The goal of SSR was to promote the study of reproduction by fostering interdisciplinary communication among scientists, holding conferences, and publishing meritorious studies. Today after its 50th anniversary, the mission for SSR is to harness …


Studies Of Norspermidine Uptake In Drosophila Suggest The Existence Of Multiple Polyamine Transport Pathways, Michael Dieffenbach Jan 2018

Studies Of Norspermidine Uptake In Drosophila Suggest The Existence Of Multiple Polyamine Transport Pathways, Michael Dieffenbach

Honors Undergraduate Theses

Polyamines are a class of essential nutrients involved in many basic cellular processes such as gene expression, cell proliferation, and apoptosis. Without polyamines, cell growth is delayed or halted. Cancerous cells require an abundance of polyamines through a combination of synthesis and transport from the extracellular environment. An FDA-approved drug, D,L-α-difluoromethylornithine (DFMO), blocks polyamine synthesis but is ineffective at inhibiting cell growth due to polyamine transport. Thus, there is a need to develop drugs that inhibit polyamine transport to use in combination with DFMO. Surprisingly, little is known about the polyamine transport system in humans and other eukaryotes. Understanding the …


National Beef Quality Audit–2016: Assessment Of Cattle Hide Characteristics, Offal Condemnations, And Carcass Traits To Determine The Quality Status Of The Market Cow And Bull Beef Industry, Mckensie K. Harris, L. Clay Eastwood, Courtney A. Boykin, Ashley N. Arnold, Kerri B. Gehring, Daniel S. Hale, Christopher R. Kerth, Davey B. Griffin, J.W. Savell, Keith E. Belk, Dale R. Woerner, Josh D. Hasty, Jennifer N. Martin, Ty E. Lawrence, Trenton J. Mcevers, Deborah L. Vanoverbeke, Gretchen G. Mafi, Morgan M. Pfeiffer, Ty B. Schmidt, Robert J. Maddock, D. Dwain Johnson, Chad C. Carr, Jason M. Scheffler, T. Dean Pringle, Alexander M. Stelzleni, Robert J. Delmore Jr. Jan 2018

National Beef Quality Audit–2016: Assessment Of Cattle Hide Characteristics, Offal Condemnations, And Carcass Traits To Determine The Quality Status Of The Market Cow And Bull Beef Industry, Mckensie K. Harris, L. Clay Eastwood, Courtney A. Boykin, Ashley N. Arnold, Kerri B. Gehring, Daniel S. Hale, Christopher R. Kerth, Davey B. Griffin, J.W. Savell, Keith E. Belk, Dale R. Woerner, Josh D. Hasty, Jennifer N. Martin, Ty E. Lawrence, Trenton J. Mcevers, Deborah L. Vanoverbeke, Gretchen G. Mafi, Morgan M. Pfeiffer, Ty B. Schmidt, Robert J. Maddock, D. Dwain Johnson, Chad C. Carr, Jason M. Scheffler, T. Dean Pringle, Alexander M. Stelzleni, Robert J. Delmore Jr.

Department of Animal Science: Faculty Publications

To continue the series that began in 1994, the National Beef Quality Audit (NBQA) – 2016 was conducted to quantify the quality status of the market cow and bull beef sector, as well as determine improvements made in the beef and dairy industry since 2007. The NBQA-2016 was conducted from March through December of 2016, and assessed hide-on carcasses (n = 5,278), chilled carcasses (n = 4,285), heads (n = 5,720), and offal items (n = 4,800) in 18 commercial processing facilities throughout the United States. Beef cattle were predominantly black-hided; 68.0% of beef cows and 67.2% of beef bulls …


Movement In Cats, Valerie N. Plummer Jan 2018

Movement In Cats, Valerie N. Plummer

College of Graduate Studies: Theses & Dissertations

Feral cats (Felis catus) are listed as one of the '100 world's worst invasive alien species'. There are as many as 70-100 million feral cats in the United States as well as an estimated 117-157 million domestic indoor and outdoor cats. Management efforts include a nonlethal feeding and sterilization program known as "trap-neuter-release" (TNR) where cats are surgically sterilized and returned to the environment. Population size and structure, immigration rates, spay/neuter rates, and data on spatial use all play a role in whether TNR is a viable management option. This study focuses on population structure and spatial use. …


Floral Symmetry Genes Elucidate The Development And Evolution Of Oil-Bee Pollinated Flowers Of Malpighiaceae And Krameriaceae, Farahnoz N. Khojayori Jan 2018

Floral Symmetry Genes Elucidate The Development And Evolution Of Oil-Bee Pollinated Flowers Of Malpighiaceae And Krameriaceae, Farahnoz N. Khojayori

Theses and Dissertations

Specialization on insect and animal pollinators is thought to be the driving force for the evolution of floral traits. Specifically in the New World (NW), the oil-bee pollination syndrome has led to the convergence of floral characters in two distantly related families of core eudicots, Malpighiaceae and Krameriaceae. Both families display a flag-like structure that establishes a zygomorphic flower and floral oil rewards in epithelial elaiophores. These traits work concomitantly to attract and reward female oil-bees that help fertilize these flowers and in return receive oils. The underlying genetics of floral zygomorphy were studied in several clades of core eudicots, …


Analysis Of The Transcription Factors Expressed In The Mature Seed Embryos Of Moringa Oleifera Lam. Using Rna-Sequencing And De Novo Transcriptome Assembly, Vivian A. Panes, R.D Baoas Jan 2018

Analysis Of The Transcription Factors Expressed In The Mature Seed Embryos Of Moringa Oleifera Lam. Using Rna-Sequencing And De Novo Transcriptome Assembly, Vivian A. Panes, R.D Baoas

Biology Faculty Publications

Moringa oleifera Lam. is well known for its numerous documented properties, particularly its significant applications in nutrition, therapeutics, biocontrol, energy, and bioremediation. These properties are the consequences of the vibrant physiological processes of the plant in the context of the ever-changing biotic and abiotic factors, in which transcription factors play substantial roles. Transcription factors (TFs) are the regulators of gene expression. Transcription factors enable the activation or repression of transcription. Along with the advent of ultrahighthroughput sequencing technologies such as RNA sequencing (RNA-Seq), in combination with bioinformatics techniques, the investigation of the TFs of M. oleifera was made possible. This …


Interitance Pattern Of Vestigial Mutation In Drosophila Melanogaster, Tori R. Witruck, Adam Padron Jan 2018

Interitance Pattern Of Vestigial Mutation In Drosophila Melanogaster, Tori R. Witruck, Adam Padron

A with Honors Projects

The purpose of this experiment was to determine the inheritance pattern of the vestigial mutation in Drosophila melanogaster. The experiment was to include two crosses with wild type and vestigial mutation, but the second cross experienced environmental setbacks potentially affecting the results, the experiment could lead to future testing on environmental effects on mutation.


Role Of Glycerol-3-Phosphate Permeases In Plant Defense, Juliana Moreira Soares Jan 2018

Role Of Glycerol-3-Phosphate Permeases In Plant Defense, Juliana Moreira Soares

Theses and Dissertations--Plant Pathology

Systemic acquired resistance (SAR) is a type of plant defense mechanism that is induced after a localized infection and confers broad-spectrum immunity against related or unrelated pathogens. During SAR, a number of chemical signals and proteins generated at the site of primary infection travel to the uninfected tissues and are thought to alert the distal sites against secondary infections. Glycerol-3-phosphate (G3P) is one of the chemical signals that play an important role in SAR. G3P is synthesized in the cytosol and chloroplasts via the enzymatic activities of G3P Dehydrogenase (G3Pdh) or Glycerol Kinase (GK). Interestingly, a mutation in three of …


Validating Functional Mechanisms For Non-Coding Genetic Variants Associated With Complex Traits, Cynthia Ann Kalita Jan 2018

Validating Functional Mechanisms For Non-Coding Genetic Variants Associated With Complex Traits, Cynthia Ann Kalita

Wayne State University Dissertations

Genome-wide association studies (GWAS) have identified a large number of genetic variants associated with disease as well as normal phenotypic variation for complex traits. However challenges remain in determining the functional relevance of human DNA sequence variants. Even after fine mapping, most variants are located in non-coding regions making it difficult to infer mechanisms linking individual genetic variants with the disease trait. In addition, we do not know under which environmental conditions the sequence variants have a functional impact, and whether they become one of many factors involved in complex phenotypes at the organismal level.

Chapter 1 describes computational methods …


The Cytoscape Automation App Article Collection., Barry Demchak, David Otasek, Alexander R Pico, Gary D Bader, Keiichiro Ono, Brett Settle, Eric Sage, John H Morris, William Longabaugh, Christian Lopes, Michael Kucera, Adam Treister, Benno Schwikowski, Piet Molenaar, Trey Ideker Jan 2018

The Cytoscape Automation App Article Collection., Barry Demchak, David Otasek, Alexander R Pico, Gary D Bader, Keiichiro Ono, Brett Settle, Eric Sage, John H Morris, William Longabaugh, Christian Lopes, Michael Kucera, Adam Treister, Benno Schwikowski, Piet Molenaar, Trey Ideker

Articles, Abstracts, and Reports

Cytoscape is the premiere platform for interactive analysis, integration and visualization of network data. While Cytoscape itself delivers much basic functionality, it relies on community-written apps to deliver specialized functions and analyses. To date, Cytoscape's CyREST feature has allowed researchers to write workflows that call basic Cytoscape functions, but provides no access to its high value app-based functions. With Cytoscape Automation, workflows can now call apps that have been upgraded to expose their functionality. This article collection is a resource to assist readers in quickly and economically leveraging such apps in reproducible workflows that scale independently to large data sets …


The Microbiome Stress Project: Toward A Global Meta-Analysis Of Environmental Stressors And Their Effects On Microbial Communities., Jennifer D Rocca, Marie Simonin, Joanna R Blaszczak, Jessica G Ernakovich, Sean M Gibbons, Firas S Midani, Alex D Washburne Jan 2018

The Microbiome Stress Project: Toward A Global Meta-Analysis Of Environmental Stressors And Their Effects On Microbial Communities., Jennifer D Rocca, Marie Simonin, Joanna R Blaszczak, Jessica G Ernakovich, Sean M Gibbons, Firas S Midani, Alex D Washburne

Articles, Abstracts, and Reports

Microbial community structure is highly sensitive to natural (e.g., drought, temperature, fire) and anthropogenic (e.g., heavy metal exposure, land-use change) stressors. However, despite an immense amount of data generated, systematic, cross-environment analyses of microbiome responses to multiple disturbances are lacking. Here, we present the Microbiome Stress Project, an open-access database of environmental and host-associated 16S rRNA amplicon sequencing studies collected to facilitate cross-study analyses of microbiome responses to stressors. This database will comprise published and unpublished datasets re-processed from the raw sequences into exact sequence variants using our standardized computational pipeline. Our database will provide insight into general response patterns …


Sivcpz Closely Related To The Ancestral Hiv-1 Is Less Or Non-Pathogenic To Humans In A Hu-Blt Mouse Model, Zhe Yuan, Guobin Kang, Lance Daharsh, Wenjin Fan, Qingsheng Li Jan 2018

Sivcpz Closely Related To The Ancestral Hiv-1 Is Less Or Non-Pathogenic To Humans In A Hu-Blt Mouse Model, Zhe Yuan, Guobin Kang, Lance Daharsh, Wenjin Fan, Qingsheng Li

Nebraska Center for Virology: Faculty Publications

The HIV-1 pandemic is a consequence of the cross-species transmission of simian immunodeficiency virus in wild chimpanzees (SIVcpz) to humans. Our previous study demonstrated SIVcpz strains that are closely related to the ancestral viruses of HIV-1 groups M (SIVcpzMB897) and N (SIVcpzEK505) and two SIVcpz lineages that are not associated with any known HIV-1 infections in humans (SIVcpzMT145 and SIVcpzBF1167), all can readily infect and robustly replicate in the humanized-BLT mouse model of humans. However, the comparative pathogenicity of different SIVcpz strains remains unknown. Herein, we compared the pathogenicity of the above four SIVcpz strains with HIV-1 using humanized-BLT mice. …


Identification Of Unequally Represented Founder Viruses Among Tissues In Very Early Siv Rectal Transmission, Jian Chen, Yanqin Ren, Lance Daharsh, Lu Liu, Guobin Kang, Qingsheng Li, Qiang Wei, Yanmin Wu, Jianqing Xu Jan 2018

Identification Of Unequally Represented Founder Viruses Among Tissues In Very Early Siv Rectal Transmission, Jian Chen, Yanqin Ren, Lance Daharsh, Lu Liu, Guobin Kang, Qingsheng Li, Qiang Wei, Yanmin Wu, Jianqing Xu

Nebraska Center for Virology: Faculty Publications

Characterizing the transmitted/founder (T/F) viruses of multi-variant SIV infection may shed new light on the understanding of mucosal transmission.We intrarectally inoculated six Chinese rhesus macaques with a single high dose of SIVmac251 (3.1 × 104 TCID50) and obtained 985 full-length env sequences from multiple tissues at 6 and 10 days post-infection by single genome amplification (SGA). All 6 monkeys were infected with a range of 2 to 8 T/F viruses and the dominant variants from the inoculum were still dominant in different tissues from each monkey. Interestingly, our data showed that a cluster of rare T/F viruses …


Analytical Performance Of A Low‐Cost Multiplex Polymerase Chain Reaction Human Papillomavirus Genotyping Assay For Use In Sub‐Saharan Africa, Kandali Samwel, Crispin Kahesa, Julius Mwaiselage, Daniela Gonzalez, John T. West, Charles Wood, Joel Palefsky, Peter C. Angeletti Jan 2018

Analytical Performance Of A Low‐Cost Multiplex Polymerase Chain Reaction Human Papillomavirus Genotyping Assay For Use In Sub‐Saharan Africa, Kandali Samwel, Crispin Kahesa, Julius Mwaiselage, Daniela Gonzalez, John T. West, Charles Wood, Joel Palefsky, Peter C. Angeletti

Nebraska Center for Virology: Faculty Publications

We have tested a multiplex polymerase chain reaction (PCR) human papillomavirus (HPV) genotyping assay to fill the need for rapid and low‐cost HPV detection in Sub‐ Saharan Africa. This method allows high throughput genotyping and simultaneous detection of 14 high‐risk and two low‐risk HPV types, by PCR amplification of HPV DNAs in a single reaction tube. In this study, we describe stepwise experiments to validate the multiplex HPV PCR assay for determination of HPV genotypes from 104 cervical brush samples from Tanzanian women. Assay performance was evaluated by determination of intra‐laboratory reproducibility, sensitivity, and specificity. Further performance was assessed by …


Discovery Of A Non-Nucleoside Rna Polymerase Inhibitor For Blocking Zika Virus Replication Through In Silico Screening, Aryamav Pattnaik, Nicholas Palermo, Bikash R. Sahoo, Zhe Yuan, Duoyi Hu, Arun S. Annamalai, Hiep L. X. Vu, Ignacio Correas, Pavan Kumar Prathipati, Christopher J. Destache, Qingsheng Li, Fernando A. Osorio, Asit K. Pattnaik, Shi-Hua Xiang Jan 2018

Discovery Of A Non-Nucleoside Rna Polymerase Inhibitor For Blocking Zika Virus Replication Through In Silico Screening, Aryamav Pattnaik, Nicholas Palermo, Bikash R. Sahoo, Zhe Yuan, Duoyi Hu, Arun S. Annamalai, Hiep L. X. Vu, Ignacio Correas, Pavan Kumar Prathipati, Christopher J. Destache, Qingsheng Li, Fernando A. Osorio, Asit K. Pattnaik, Shi-Hua Xiang

Nebraska Center for Virology: Faculty Publications

Zika virus (ZIKV), an emerging arbovirus, has become a major human health concern globally due to its association with congenital abnormalities and neurological diseases. Licensed vaccines or antivirals against ZIKV are currently unavailable. Here, by employing a structure-based approach targeting the ZIKV RNA-dependent RNA polymerase (RdRp), we conducted in silico screening of a library of 100,000 small molecules and tested the top ten lead compounds for their ability to inhibit the virus replication in cell-based in vitro assays. One compound, 3-chloro-N-[({4-[4-(2-thienylcarbonyl)-1-piperazinyl]phenyl}amino)carbonothioyl]-1-benzothiophene-2-carboxamide (TPB), potently inhibited ZIKV replication at submicromolar concentrations. Molecular docking analysis suggests that …


Including Phenotypic Causal Networks In Genome-Wide Association Studies Using Mixed Effects Structural Equation Models, Mehdi Momen, Ahmad Ayatollahi Mehrgardi, Mahmoud Amiri Roudbar, Andreas Kranis, Renan Mercuri Pinto, Bruno D. Valente, Gota Morota, Guilherme J.M. Rosa, Daniel Gianola Jan 2018

Including Phenotypic Causal Networks In Genome-Wide Association Studies Using Mixed Effects Structural Equation Models, Mehdi Momen, Ahmad Ayatollahi Mehrgardi, Mahmoud Amiri Roudbar, Andreas Kranis, Renan Mercuri Pinto, Bruno D. Valente, Gota Morota, Guilherme J.M. Rosa, Daniel Gianola

Department of Animal Science: Faculty Publications

Background: Phenotypic networks describing putative causal relationship among multiple phenotypes can be used to infer single-nucleotide polymorphism (SNP) effects in genome-wide association studies (GWAS). In GWAS with multiple phenotypes, reconstructing underlying causal structures among traits and SNPs using a single statistical framework is essential for understanding the entirety of genotype-phenotype maps. A structural equation model (SEM) can be used for such purpose.

Methods: We applied SEM to GWAS (SEM-GWAS) in chickens, taking into account putative causal relationships among body weight (BW), breast meat (BW), hen-house production (HHP), and SNPs. We assessed the performance of SEM-GWAS by comparing the model results …


Physiological And Behavioural Response Of Two Dairy Cows’ Genotypes During Summertime In The Central Region Of Chile, Rodrigo A. Arias, Camila Herrera, Rafael Larraín, Fernando González, Terry L. Mader, Alejandro Velásquez Jan 2018

Physiological And Behavioural Response Of Two Dairy Cows’ Genotypes During Summertime In The Central Region Of Chile, Rodrigo A. Arias, Camila Herrera, Rafael Larraín, Fernando González, Terry L. Mader, Alejandro Velásquez

Department of Animal Science: Faculty Publications

Heat stress has been recognized as a serious problem in dairy farms. The study goal was to assess the effects of climatic conditions on physiological and behavioral responses of dairy cows in Central Chile. Data of tympanic temperature (TT), panting score, respiration rate (RR), and shade utilization of cows from two genotypes, Holstein (H) and Holstein x Montbeliarde (HM), were collected twice per day (AM/PM) during three periods of the summer season in Central Chile. Moreover, three thermal comfort indices: Comprehensive climate index (CCI), temperature humidity-index (THI), and adjusted THI were estimated using meteorological data. The hour of each day …


Big Data Analytics And Precision Animal Agriculture Symposium: Machine Learning And Data Mining Advance Predictive Big Data Analysis In Precision Animal Agriculture, Gota Morota, Ricardo V. Ventura, Fabyano F. Silva, Masanori Koyama, Samodha C. Fernando Jan 2018

Big Data Analytics And Precision Animal Agriculture Symposium: Machine Learning And Data Mining Advance Predictive Big Data Analysis In Precision Animal Agriculture, Gota Morota, Ricardo V. Ventura, Fabyano F. Silva, Masanori Koyama, Samodha C. Fernando

Department of Animal Science: Faculty Publications

Precision animal agriculture is poised to rise to prominence in the livestock enterprise in the domains of management, production, welfare, sustainability, health surveillance, and environmental footprint. Considerable progress has been made in the use of tools to routinely monitor and collect information from animals and farms in a less laborious manner than before. These efforts have enabled the animal sciences to embark on information technology-driven discoveries to improve animal agriculture. However, the growing amount and complexity of data generated by fully automated, high-throughput data recording or phenotyping platforms, including digital images, sensor and sound data, unmanned systems, and information obtained …


The Influence Of Fat And Hemicellulose On Methane Production And Energy Utilization In Lactating Jersey Cattle, O. R. Drehmel, T. M. Brown-Brandl, J. V. Judy, S. C. Fernando, P. S. Miller, K. E. Hales, Paul J. Kononoff Jan 2018

The Influence Of Fat And Hemicellulose On Methane Production And Energy Utilization In Lactating Jersey Cattle, O. R. Drehmel, T. M. Brown-Brandl, J. V. Judy, S. C. Fernando, P. S. Miller, K. E. Hales, Paul J. Kononoff

Department of Animal Science: Faculty Publications

Feeding fat to lactating dairy cows may reduce methane production. Relative to cellulose, fermentation of hemicellulose is believed to result in less methane; however, these factors have not been studied simultaneously. Eight multiparous, lactating Jersey cows averaging (±SD) 98 ± 30.8 d in milk and body weight of 439.3 ± 56.7 kg were used in a twice-replicated 4 × 4 Latin square to determine the effects of fat and hemicellulose on energy utilization and methane production using a headbox-type indirect calorimetry method. To manipulate the concentration of fat, porcine tallow was included at either 0 or 2% of the diet …


Predictive Ability Of Genome-Assisted Statistical Models Under Various Forms Of Gene Action, Mehdi Momen, Ahmad Ayatollahi Mehrgardi, Ayyub Sheikhi, Andreas Kranis, Llibertat Tussell, Gota Morota, Guilherme J. M. Rosa, Daniel Gianola Jan 2018

Predictive Ability Of Genome-Assisted Statistical Models Under Various Forms Of Gene Action, Mehdi Momen, Ahmad Ayatollahi Mehrgardi, Ayyub Sheikhi, Andreas Kranis, Llibertat Tussell, Gota Morota, Guilherme J. M. Rosa, Daniel Gianola

Department of Animal Science: Faculty Publications

Recent work has suggested that the performance of prediction models for complex traits may depend on the architecture of the target traits. Here we compared several prediction models with respect to their ability of predicting phenotypes under various statistical architectures of gene action: (1) purely additive, (2) additive and dominance, (3) additive, dominance, and two-locus epistasis, and (4) purely epistatic settings. Simulation and a real chicken dataset were used. Fourteen prediction models were compared: BayesA, BayesB, BayesC, Bayesian LASSO, Bayesian ridge regression, elastic net, genomic best linear unbiased prediction, a Gaussian process, LASSO, random forests, reproducing kernel Hilbert spaces regression, …


Linkage Disequilibrium In Brazilian Santa Inês Breed, Ovis Aries, Amanda Botelho Alvarenga, Gregori Alberto Rovadoscki, Juliana Petrini, Luiz Lehmann Coutinho, Gota Morota, Matthew L. Spangler, Luis Fernando Batista Pinto, Gleidson Giordano Pinto Carvalho, G. B. Mourao Jan 2018

Linkage Disequilibrium In Brazilian Santa Inês Breed, Ovis Aries, Amanda Botelho Alvarenga, Gregori Alberto Rovadoscki, Juliana Petrini, Luiz Lehmann Coutinho, Gota Morota, Matthew L. Spangler, Luis Fernando Batista Pinto, Gleidson Giordano Pinto Carvalho, G. B. Mourao

Department of Animal Science: Faculty Publications

For genomic selection to be successful, there must be sufficient linkage disequilibrium between the markers and the causal mutations. The objectives of this study were to evaluate the extent of LD in ovine using the Santa Inês breed and to infer the minimum number of markers required to reach reasonable prediction accuracy. In total, 38,168 SNPs and 395 samples were used. The mean LD between adjacent marker pairs measured by r2 and |D′| were 0.166 and 0.617, respectively. LD values between adjacent marker pairs ranged from 0.135 to 0.194 and from 0.568 to 0.650 for r2 for |D′| …


Estimates Of Genomic Heritability And Genome-Wide Association Study For Fatty Acids Profile In Santa Inês Sheep, G. A. Rovadoscki, S. F. N. Pertile, A. B. Alvarenga, A. S. M. Cesar, F. Pertille, J. Petrini, V. Franzo, W. V. B. Soares, G. Morota, Matthew L. Spangler, L. F. B. Pinto, G. G. P. Carvalho, D. P. D. Lanna, L. L. Coutinho, G. B. Mourao Jan 2018

Estimates Of Genomic Heritability And Genome-Wide Association Study For Fatty Acids Profile In Santa Inês Sheep, G. A. Rovadoscki, S. F. N. Pertile, A. B. Alvarenga, A. S. M. Cesar, F. Pertille, J. Petrini, V. Franzo, W. V. B. Soares, G. Morota, Matthew L. Spangler, L. F. B. Pinto, G. G. P. Carvalho, D. P. D. Lanna, L. L. Coutinho, G. B. Mourao

Department of Animal Science: Faculty Publications

Background: Despite the health concerns and nutritional importance of fatty acids, there is a relative paucity of studies in the literature that report genetic or genomic parameters, especially in the case of sheep populations. To investigate the genetic architecture of fatty acid composition of sheep, we conducted genome-wide association studies (GWAS) and estimated genomic heritabilities for fatty acid profile in Longissimus dorsi muscle of 216 male sheep.

Results: Genomic heritability estimates for fatty acid content ranged from 0.25 to 0.46, indicating that substantial genetic variation exists for the evaluated traits. Therefore, it is possible to alter fatty acid profiles through …


Effect Of Differing Ingredients And Packaging Technologies On The Color Of High-Pressure Processed Ground Beef, Jhinuk Gupta, Chad G. Bower, Gary Sullivan, George A. Cavender Jan 2018

Effect Of Differing Ingredients And Packaging Technologies On The Color Of High-Pressure Processed Ground Beef, Jhinuk Gupta, Chad G. Bower, Gary Sullivan, George A. Cavender

Department of Animal Science: Faculty Publications

High-pressure processing (HPP) is a nonthermal pasteurization technique to control pathogens, like Escherichia coli. However, color changes in raw beef induced by HPP restrict its use within the beef industry. ­e objectives of this study were to investigate the effects of adding curing agents (nitrite) and packaging with or without reducing compounds (ascorbic acid/erythorbate) on color retention in high-pressure processed ground beef. Color was measured (CIE L*a*b*) before HPP and on days 3, 7, 12, 14, 19, and 21 after HPP. Statistical analysis (SAS GLIMMIX) was run to identify the main effects of adding curing agents, packaging, and …


The Impact Of Truncating Data On The Predictive Ability For Single-Step Genomic Best Linear Unbiased Prediction, Jeremy T. Howard, Thomas A. Rathje, Caitlyn E. Bruns, Danielle F. Wilson-Wells, Stephen D. Kachman, Matthew L. Spangler Jan 2018

The Impact Of Truncating Data On The Predictive Ability For Single-Step Genomic Best Linear Unbiased Prediction, Jeremy T. Howard, Thomas A. Rathje, Caitlyn E. Bruns, Danielle F. Wilson-Wells, Stephen D. Kachman, Matthew L. Spangler

Department of Animal Science: Faculty Publications

Simulated and swine industry data sets were utilized to assess the impact of removing older data on the predictive ability of selection candidate estimated breeding values (EBV) when using single-step genomic best linear unbiased prediction (ssGBLUP). Simulated data included thirty replicates designed to mimic the structure of swine data sets. For the simulated data, varying amounts of data were truncated based on the number of ancestral generations back from the selection candidates. The swine data sets consisted of phenotypic and genotypic records for three traits across two breeds on animals born from 2003 to 2017. Phenotypes and genotypes were iteratively …


Do Stronger Measures Of Genomic Connectedness Enhance Prediction Accuracies Across Management Units?, Haipeng Yu, Matthew L. Spangler, Ronald M. Lewis, Gota Morota Jan 2018

Do Stronger Measures Of Genomic Connectedness Enhance Prediction Accuracies Across Management Units?, Haipeng Yu, Matthew L. Spangler, Ronald M. Lewis, Gota Morota

Department of Animal Science: Faculty Publications

Genetic connectedness assesses the extent to which estimated breeding values can be fairly compared across management units. Ranking of individuals across units based on best linear unbiased prediction (BLUP) is reliable when there is a sufficient level of connectedness due to a better disentangling of genetic signal from noise. Connectedness arises from genetic relationships among individuals. Although a recent study showed that genomic relatedness strengthens the estimates of connectedness across management units compared with that of pedigree, the relationship between connectedness measures and prediction accuracies only has been explored to a limited extent. In this study, we examined whether increased …


Fecal Microbiota Transplantation Is Associated With Reduced Morbidity And Mortality In Porcine Circovirus Associated Disease, Megan C. Niederwerder, Laura A. Constance, Raymond R. R. Rowland, Waseem Abbas, Samodha C. Fernando, Megan L. Potter, Maureen A. Sheahan, Thomas E. Burkey, Richard A. Hesse, Ada G. Cino-Ozuna Jan 2018

Fecal Microbiota Transplantation Is Associated With Reduced Morbidity And Mortality In Porcine Circovirus Associated Disease, Megan C. Niederwerder, Laura A. Constance, Raymond R. R. Rowland, Waseem Abbas, Samodha C. Fernando, Megan L. Potter, Maureen A. Sheahan, Thomas E. Burkey, Richard A. Hesse, Ada G. Cino-Ozuna

Department of Animal Science: Faculty Publications

Porcine circovirus associated disease (PCVAD) is a term used to describe the multifactorial disease syndromes caused by porcine circovirus type 2 (PCV-2), which can be reproduced in an experimental setting through the co-infection of pigs with PCV-2 and porcine reproductive and respiratory syndrome virus (PRRSV). The resulting PCVAD-affected pigs represent a subpopulation within the co-infected group. In co-infection studies, the presence of increased microbiome diversity is linked to a reduction in clinical signs. In this study, fecal microbiota transplantation (FMT) was investigated as a means to prevent PCVAD in pigs co-infected with PRRSV and PCV-2d. The sources of the FMT …


Generation Of An Equine Biobank To Be Used For Functional Annotation Of Animal Genomes Project, E. N. Burns, M. H. Bordbari, M. J. Mienaltowski, V. K. Affolter, M. V. Barro, F. Gianino, G. Gianino, E. Giulotto, T. S. Kalbfleisch, S. A. Katzman, M. Lassaline, T. Leeb, M. Mack, E. J. Muller, J. N. Macleod, B. Ming-Whitfield, C. R. Alanis, T. Raudsepp, E. Scott, S. Vig, H. Zhou, J. L. Petersen, R. R. Bellone, C. J. Finno Jan 2018

Generation Of An Equine Biobank To Be Used For Functional Annotation Of Animal Genomes Project, E. N. Burns, M. H. Bordbari, M. J. Mienaltowski, V. K. Affolter, M. V. Barro, F. Gianino, G. Gianino, E. Giulotto, T. S. Kalbfleisch, S. A. Katzman, M. Lassaline, T. Leeb, M. Mack, E. J. Muller, J. N. Macleod, B. Ming-Whitfield, C. R. Alanis, T. Raudsepp, E. Scott, S. Vig, H. Zhou, J. L. Petersen, R. R. Bellone, C. J. Finno

Department of Animal Science: Faculty Publications

The Functional Annotation of Animal Genomes (FAANG) project aims to identify genomic regulatory elements in both sexes across multiple stages of development in domesticated animals. This study represents the first stage of the FAANG project for the horse, Equus caballus. A biobank of 80 tissue samples, two cell lines and six body fluids was created from two adult Thoroughbred mares. Ante-mortem assessments included full physical examinations, lameness, ophthalmologic and neurologic evaluations. Complete blood counts and serum biochemistries were also performed. At necropsy, in addition to tissue samples, aliquots of serum, ethylenediaminetetraacetic acid (EDTA) plasma, heparinized plasma, cerebrospinal fluid, synovial …