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https://www.readbyqxmd.com/read/28728369/estimation-of-heritability-and-genetic-correlation-of-body-weight-gain-and-growth-curve-parameters-in-korean-native-chicken
#1
Prabuddha Manjula, Hee-Bok Park, Dongwon Seo, Nuri Choi, Shil Jin, Sung Jin Ahn, Kang Nyeong Heo, Bo Seok Kang, Jun Heon Lee
Objective: The aim of this present study was to estimate genetic parameters for body weight gain and growth curve parameter traits in Korean Native Chicken (KNC). Methods: A total of 585 F1 chickens were used along with 88 of their F0 birds. Body weights were measured every 2 weeks from hatching to 20 weeks of age to measure weight gain at 2-week intervals. For each individual, a logistic growth curve model was fitted to the longitudinal growth dataset to obtain three growth curve parameters (α: asymptotic final body weight, β: inflection point, and γ: constant scale that was proportional to the overall growth rate)...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728362/estimation-of-genetic-parameters-of-the-productive-and-reproductive-traits-in-ethiopian-holstein-using-multi-trait-models
#2
Wondossen Ayalew, Mohammed Aliy, Enyew Negussie
Objective: The objective of this study was to estimate genetic parameters for productive and reproductive traits. Methods: The data included production and reproduction records of animals that have calved between 1979 and 2013. The genetic parameters were estimated using multivariate mixed models (DMU) package, fitting univariate and multivariate mixed models with average information restricted maximum likelihood (AI-REML) algorithm. Results: The estimates of heritability for milk production traits from the first three lactation records were 0...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728355/identification-of-genes-related-to-intramuscular-fat-content-of-pig-using-genome-wide-association-study
#3
Sohyoung Won, Jaehoon Jung, Eungwoo Park, H B Kim
Objective: The aim of this study is to identify SNPs and genes related to pig IMF and estimate the heritability of IMF. Methods: Genome-wide association study (GWAS) on 704 inbred Berkshires was performed for intramuscular fat content (IMF). To consider the inbreeding among samples, associations of the SNPs with IMF were tested as random effects in a mixed linear model using the genetic relationship matrix by GEMMA. Significant genes were compared with reported pig IMF QTL regions and functional classification of the identified genes were also performed...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28727943/the-genetic-background-of-metabolic-trait-clusters-in-children-and-adolescents
#4
Karri Silventoinen, Élvio Gouveia, Aline Jelenkovic, José Maia, António M Antunes, Miguel A A Pinheiro de Carvalho, António M Brehm, Martine Thomis, Johan Lefevre, Jaakko Kaprio, Duarte Freitas
BACKGROUND: It is well known that metabolic risk factors of cardiovascular diseases are correlated, but the background of this clustering in children is more poorly known than in adults. Thus, we studied the contribution of genetic and environmental factors to the clustering of metabolic traits in childhood and adolescence. DATA AND METHODS: Nine metabolic traits were measured in 214 complete twin pairs aged 3-18 years in the Autonomous Region of Madeira, Portugal, in 2007 and 2008...
July 20, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28727038/genetic-correlations-between-wool-traits-and-carcass-traits-in-merino-sheep
#5
S I Mortimer, S Hatcher, N M Fogarty, J H J van der Werf, D J Brown, A A Swan, R H Jacob, G H Geesink, D L Hopkins, J E Hocking Edwards, E N Ponnampalam, K L Pearce, D W Pethick
Genetic correlations between 29 wool production and quality traits and 14 whole carcass measures and carcass component traits were estimated from the Information Nucleus of 8 flocks managed across a range of Australian sheep production environments and genetically linked. Wool data were from over 5,000 Merino progeny born over 5 yr, whereas carcass data were from over 1,200 wether progeny of over 176 sires, slaughtered at about 21 kg carcass weight, on average. Wool traits included yearling and adult records for wool weight, fiber diameter, fiber diameter variation, staple strength, scoured color, and visual scores for breech and body wrinkle...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727035/genetic-analysis-of-feet-and-leg-conformation-traits-in-nelore-cattle
#6
G Vargas, H H R Neves, V Cardoso, D P Munari, R Carvalheiro
Feet and leg conformation scores are important traits in beef cattle because they encompass a wide range of locomotion disorders that can lead to productive and reproductive losses. Thus, the study of feet and legs in beef cattle is essential for evaluating possible responses to selection focusing on minimizing economic losses caused by the occurrence of feet and leg problems. The aim of this study was to estimate variance components for feet and leg conformation traits in Nelore cattle. The data set contained records of approximately 300,000 animals that were born between 2000 and 2013...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727026/impact-of-alternative-definitions-of-contemporary-groups-on-genetic-evaluations-of-traits-recorded-at-lambing
#7
N McHugh, T Pabiou, E Wall, K McDermott, D P Berry
The objective of this study was to quantify the impact of alternative contemporary group definitions for lambing traits on genetic evaluations in the Irish multibreed sheep population. Three lambing traits were considered for analysis: lambing difficulty, birth weight, and survival. Eight alternative contemporary group definitions were investigated for each lambing trait; all contemporary groups were formed within flock of lambing and included (flock by) week of lambing, week of lambing by litter size (i.e...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727024/factors-affecting-ewe-performance-in-a-crossbred-dairy-sheep-research-flock-in-the-united-states
#8
T W Murphy, Y M Berger, P W Holman, M Baldin, R L Burgett, D L Thomas
The Spooner Agricultural Research Station operated the only dairy sheep research flock in North America through 2016. The original nondairy ewe flock was "bred up" to a crossbred dairy flock through the use of rams and semen of the East Friesian (EF) and Lacaune (LA) dairy breeds. The objective of this study was to determine the environmental and nonadditive genetic effects that influence performance of dairy ewes. The traits analyzed were 180 d adjusted milk (180d MY), fat (180d FY), and protein (180d PY) yields, percentage fat (%F) and protein (%P) in milk, lactation average somatic cell score (LSCS), and number of lambs born per ewe lambing (NLB)...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726993/genetic-parameters-for-wool-traits-live-weight-and-ultrasound-carcass-traits-in-merino-sheep
#9
S I Mortimer, S Hatcher, N M Fogarty, J H J van der Werf, D J Brown, A A Swan, J C Greeff, G Refshauge, J E Hocking Edwards, G M Gaunt
Genetic correlations between 29 wool production and quality traits and live weight and ultrasound fat depth (FAT) and eye muscle depth (EMD) traits were estimated from the Information Nucleus (IN). The IN comprised 8 genetically linked flocks managed across a range of Australian sheep production environments. The data were from a maximum of 9,135 progeny born over 5 yr from 184 Merino sires and 4,614 Merino dams. The wool traits included records for yearling and adult fleece weight, fiber diameter (FD), staple length (SL), fiber diameter CV (FDCV), scoured color, and visual scores for breech and body wrinkle...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726807/when-genotype-is-not-predictive-of-phenotype-implications-for-genetic-counseling-based-on-21-594-chromosomal-microarray-analysis-examinations
#10
Idit Maya, Reuven Sharony, Shiri Yacobson, Sarit Kahana, Josepha Yeshaya, Tamar Tenne, Ifaat Agmon-Fishman, Lital Cohen-Vig, Yael Goldberg, Racheli Berger, Lina Basel-Salmon, Mordechai Shohat
PurposeTo compare the frequency of copy-number variants (CNVs) of variable penetrance in low-risk and high-risk prenatal samples and postnatal samples.MethodsTwo cohorts were categorized according to chromosomal microarray analysis (CMA) indication: group I, low-risk prenatal-women with uneventful pregnancy (control group); group II, high-risk prenatal-women whose fetuses had congenital malformations; and group III, postnatal-individuals with unexplained developmental delay/intellectual disability, autism spectrum disorders, or multiple congenital anomalies...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726280/an-efficient-study-design-to-test-parent-of-origin-effects-in-family-trios
#11
Xiaobo Yu, Gao Chen, Rui Feng
Increasing evidence has shown that genes may cause prenatal, neonatal, and pediatric diseases depending on their parental origins. Statistical models that incorporate parent-of-origin effects (POEs) can improve the power of detecting disease-associated genes and help explain the missing heritability of diseases. In many studies, children have been sequenced for genome-wide association testing. But it may become unaffordable to sequence their parents and evaluate POEs. Motivated by the reality, we proposed a budget-friendly study design of sequencing children and only genotyping their parents through single nucleotide polymorphism array...
July 20, 2017: Genetic Epidemiology
https://www.readbyqxmd.com/read/28725234/major-novel-qtl-for-resistance-to-cassava-bacterial-blight-identified-through-a-multi-environmental-analysis
#12
Johana C Soto Sedano, Rubén E Mora Moreno, Boby Mathew, Jens Léon, Fabio A Gómez Cano, Agim Ballvora, Camilo E López Carrascal
Cassava, Manihot esculenta Crantz, has been positioned as one of the most promising crops world-wide representing the staple security for more than one billion people mainly in poor countries. Cassava production is constantly threatened by several diseases, including cassava bacterial blight (CBB) caused by Xanthomonas axonopodis pv. manihotis (Xam), it is the most destructive disease causing heavy yield losses. Here, we report the detection and localization on the genetic map of cassava QTL (Quantitative Trait Loci) conferring resistance to CBB...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28725167/genetic-risk-between-the-cacna1i-gene-and-schizophrenia-in-chinese-uygur-population
#13
Wei Xu, Yahui Liu, Jianhua Chen, Qingli Guo, Ke Liu, Zujia Wen, Zhaowei Zhou, Zhijian Song, Juan Zhou, Lin He, Qizhong Yi, Yongyong Shi
BACKGROUND: Schizophrenia (SCZ) is a common mental disorder with high heritability, and genetic factors play a major role in the pathogenesis. Recent researches indicated that the CACNA1I involved in calcium channels probably affect the potential pathogenesis of SCZ. RESULTS: In this study, we attempted to investigate whether the CACNA1I gene contributes the risk to SCZ in the Uighur Chinese population, and performed a case-control study involving 985 patient samples and 1218 normal controls to analyze nine SNPs within the CACNA1I gene...
2018: Hereditas
https://www.readbyqxmd.com/read/28724990/large-meta-analysis-of-genome-wide-association-studies-identifies-five-loci-for-lean-body-mass
#14
M Carola Zillikens, Serkalem Demissie, Yi-Hsiang Hsu, Laura M Yerges-Armstrong, Wen-Chi Chou, Lisette Stolk, Gregory Livshits, Linda Broer, Toby Johnson, Daniel L Koller, Zoltán Kutalik, Jian'an Luan, Ida Malkin, Janina S Ried, Albert V Smith, Gudmar Thorleifsson, Liesbeth Vandenput, Jing Hua Zhao, Weihua Zhang, Ali Aghdassi, Kristina Åkesson, Najaf Amin, Leslie J Baier, Inês Barroso, David A Bennett, Lars Bertram, Rainer Biffar, Murielle Bochud, Michael Boehnke, Ingrid B Borecki, Aron S Buchman, Liisa Byberg, Harry Campbell, Natalia Campos Obanda, Jane A Cauley, Peggy M Cawthon, Henna Cederberg, Zhao Chen, Nam H Cho, Hyung Jin Choi, Melina Claussnitzer, Francis Collins, Steven R Cummings, Philip L De Jager, Ilja Demuth, Rosalie A M Dhonukshe-Rutten, Luda Diatchenko, Gudny Eiriksdottir, Anke W Enneman, Mike Erdos, Johan G Eriksson, Joel Eriksson, Karol Estrada, Daniel S Evans, Mary F Feitosa, Mao Fu, Melissa Garcia, Christian Gieger, Thomas Girke, Nicole L Glazer, Harald Grallert, Jagvir Grewal, Bok-Ghee Han, Robert L Hanson, Caroline Hayward, Albert Hofman, Eric P Hoffman, Georg Homuth, Wen-Chi Hsueh, Monica J Hubal, Alan Hubbard, Kim M Huffman, Lise B Husted, Thomas Illig, Erik Ingelsson, Till Ittermann, John-Olov Jansson, Joanne M Jordan, Antti Jula, Magnus Karlsson, Kay-Tee Khaw, Tuomas O Kilpeläinen, Norman Klopp, Jacqueline S L Kloth, Heikki A Koistinen, William E Kraus, Stephen Kritchevsky, Teemu Kuulasmaa, Johanna Kuusisto, Markku Laakso, Jari Lahti, Thomas Lang, Bente L Langdahl, Lenore J Launer, Jong-Young Lee, Markus M Lerch, Joshua R Lewis, Lars Lind, Cecilia Lindgren, Yongmei Liu, Tian Liu, Youfang Liu, Östen Ljunggren, Mattias Lorentzon, Robert N Luben, William Maixner, Fiona E McGuigan, Carolina Medina-Gomez, Thomas Meitinger, Håkan Melhus, Dan Mellström, Simon Melov, Karl Michaëlsson, Braxton D Mitchell, Andrew P Morris, Leif Mosekilde, Anne Newman, Carrie M Nielson, Jeffrey R O'Connell, Ben A Oostra, Eric S Orwoll, Aarno Palotie, Stephan Parker, Munro Peacock, Markus Perola, Annette Peters, Ozren Polasek, Richard L Prince, Katri Räikkönen, Stuart H Ralston, Samuli Ripatti, John A Robbins, Jerome I Rotter, Igor Rudan, Veikko Salomaa, Suzanne Satterfield, Eric E Schadt, Sabine Schipf, Laura Scott, Joban Sehmi, Jian Shen, Chan Soo Shin, Gunnar Sigurdsson, Shad Smith, Nicole Soranzo, Alena Stančáková, Elisabeth Steinhagen-Thiessen, Elizabeth A Streeten, Unnur Styrkarsdottir, Karin M A Swart, Sian-Tsung Tan, Mark A Tarnopolsky, Patricia Thompson, Cynthia A Thomson, Unnur Thorsteinsdottir, Emmi Tikkanen, Gregory J Tranah, Jaakko Tuomilehto, Natasja M van Schoor, Arjun Verma, Peter Vollenweider, Henry Völzke, Jean Wactawski-Wende, Mark Walker, Michael N Weedon, Ryan Welch, H-Erich Wichman, Elisabeth Widen, Frances M K Williams, James F Wilson, Nicole C Wright, Weijia Xie, Lei Yu, Yanhua Zhou, John C Chambers, Angela Döring, Cornelia M van Duijn, Michael J Econs, Vilmundur Gudnason, Jaspal S Kooner, Bruce M Psaty, Timothy D Spector, Kari Stefansson, Fernando Rivadeneira, André G Uitterlinden, Nicholas J Wareham, Vicky Ossowski, Dawn Waterworth, Ruth J F Loos, David Karasik, Tamara B Harris, Claes Ohlsson, Douglas P Kiel
Lean body mass, consisting mostly of skeletal muscle, is important for healthy aging. We performed a genome-wide association study for whole body (20 cohorts of European ancestry with n = 38,292) and appendicular (arms and legs) lean body mass (n = 28,330) measured using dual energy X-ray absorptiometry or bioelectrical impedance analysis, adjusted for sex, age, height, and fat mass. Twenty-one single-nucleotide polymorphisms were significantly associated with lean body mass either genome wide (p < 5 × 10(-8)) or suggestively genome wide (p < 2...
July 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28724480/neuroticism-and-the-overlap-between-autistic-and-adhd-traits-findings-from-a-population-sample-of-young-adult-australian-twins
#15
Shin-Ho Park, Adam J Guastella, Michael Lynskey, Arpana Agrawal, John N Constantino, Sarah E Medland, Yun Ju C Song, Nicholas G Martin, Lucía Colodro-Conde
Neuroticism, a 'Big Five' personality trait, has been associated with sub-clinical traits of both autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD). The objective of the current study was to examine whether causal overlap between ASD and ADHD traits can be accounted for by genetic and environmental risk factors that are shared with neuroticism. We performed twin-based structural equation modeling using self-report data from 12 items of the Neo Five-Factor Inventory Neuroticism domain, 11 Social Responsiveness Scale items, and 12 Adult ADHD Self-Report Scale items obtained from 3,170 young adult Australian individual twins (1,081 complete pairs)...
August 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28724462/longitudinal-analyses-of-correlated-response-efficiencies-of-fillet-traits-in-nile-tilapia
#16
E M Turra, A F A Fernandes, E R de Alvarenga, E A Teixeira, G F O Alves, L G Manduca, T W Murphy, M A Silva
Recent studies with Nile tilapia have shown divergent results regarding the possibility of selecting on morphometric measurements to promote indirect genetic gains in fillet yield (FY). The use of indirect selection for fillet traits is important as these traits are only measurable after harvesting. Random regression models are a powerful tool in association studies to identify the best time point to measure and select animals. Random regression models can also be applied in a multiple trait approach to analyze indirect response to selection, which would avoid the need to sacrifice candidate fish...
July 20, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28722129/bone-strength-estimated-by-micro-finite-element-analysis-%C3%A2%C2%B5fea-is-heritable-and-shares-genetic-predisposition-with-areal-bmd-the-framingham-study
#17
David Karasik, Serkalem Demissie, Darlene Lu, Kerry E Broe, Steven K Boyd, Ching-Ti Liu, Yi-Hsiang Hsu, Mary L Bouxsein, Douglas P Kiel
Genetic factors contribute to the risk of bone fractures, partly because of effects on bone strength. High-resolution peripheral quantitative computed tomography (HR-pQCT) estimates bone strength using micro-finite element analysis (µFEA). The goal of this study was to investigate if the bone failure load estimated by HR-pQCT-based µFEA is heritable and to what extent it shares genetic regulation with areal bone mineral density (aBMD). Bone microarchitecture was measured by HR-pQCT at the ultradistal tibia and ultradistal radius in adults from the Framingham Heart Study (n = 1087, mean age 72 years; 57% women)...
July 19, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28721587/genetically-engineered-cell-lines-for-%C3%AE-1-antitrypsin-expression
#18
Qianqian Ji, Caiping Guo, Chen Xie, Yingdan Wu, Pei Zhang, Hui Li, Yongjun Lu
OBJECTIVES: To establish genetically modified cell lines that can produce functional α1-antitrypsin (AAT), by CRISPR/Cas9-assisted homologous recombination. RESULTS: α1-Antitrypsin deficiency (AATD) is a monogenic heritable disease that often results in lungs and liver damage. Current augmentation therapy is expensive and in short of supply. To develop a safer and more effective therapeutic strategy for AATD, we integrated the AAT gene (SERPINA1, NG_008290.1) into the AAVS1 locus of human cell line HEK293T and assessed the safety and efficacy of CRISPR/Cas9 on producing potential therapeutic cell lines...
July 18, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28720766/predicting-susceptibility-to-tuberculosis-based-on-gene-expression-profiling-in-dendritic-cells
#19
John D Blischak, Ludovic Tailleux, Marsha Myrthil, Cécile Charlois, Emmanuel Bergot, Aurélien Dinh, Gloria Morizot, Olivia Chény, Cassandre Von Platen, Jean-Louis Herrmann, Roland Brosch, Luis B Barreiro, Yoav Gilad
Tuberculosis (TB) is a deadly infectious disease, which kills millions of people every year. The causative pathogen, Mycobacterium tuberculosis (MTB), is estimated to have infected up to a third of the world's population; however, only approximately 10% of infected healthy individuals progress to active TB. Despite evidence for heritability, it is not currently possible to predict who may develop TB. To explore approaches to classify susceptibility to TB, we infected with MTB dendritic cells (DCs) from putatively resistant individuals diagnosed with latent TB, and from susceptible individuals that had recovered from active TB...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720710/application-of-response-surface-methods-to-determine-conditions-for-optimal-genomic-prediction
#20
Réka Howard, Alicia L Carriquiry, William D Beavis
An epistatic genetic architecture can have a significant impact on prediction accuracies of genomic prediction (GP) methods. Machine learning methods predict traits composed of epistatic genetic architectures more accurately than statistical methods based on additive mixed linear models. The differences between these types of GP methods suggest a diagnostic for revealing genetic architectures underlying traits of interest. In addition to genetic architecture, the performance of GP methods may be influenced by the sample size of the training population, the number of QTL, and the proportion of phenotypic variability due to genotypic variability (heritability)...
July 18, 2017: G3: Genes—Genomes—Genetics
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