Article
Computer Science, Artificial Intelligence
Ozge Karadag
Summary: A multivariate heterogeneous variance components model was developed in this paper to determine location specific variance components in the analysis of multiple related traits, considering spatial heterogeneity and genetic similarities. The performance of the model was evaluated through simulation studies and heritability estimations, showing good control of locational heterogeneity. Real plant breeding data was used for illustration of the developed model.
Article
Reproductive Biology
Jamuna Valsalan, Tina Sadan, Kulangara Anilkumar, T. V. Aravindakshan
Summary: The study evaluates the correlations and covariances of fertility and production traits in crossbred cattle of Kerala, finding that daughters pregnancy rate (DPR) has low heritability and unfavorable association with milk production traits.
Article
Genetics & Heredity
Yifeng Hong, Limin Yan, Xiaoyan He, Dan Wu, Jian Ye, Gengyuan Cai, Dewu Liu, Zhenfang Wu, Cheng Tan
Summary: The random regression model is advantageous in longitudinal data analysis and has become a standard analysis method. This study estimated the heritability and variance components of semen traits in boars over their reproductive lifetime.
FRONTIERS IN GENETICS
(2022)
Article
Genetics & Heredity
Ali Pazokitoroudi, Alec M. Chiu, Kathryn S. Burch, Bogdan Pasaniuc, Sriram Sankararaman
Summary: This study investigates the proportion of non-additive genetic effects in complex traits and presents an efficient method for estimating these effects using genotype and trait data. The research finds that in a large collection of unrelated individuals in the UK Biobank, additive heritability is 21.86% and dominance heritability is around 0.13%, indicating a limited contribution of dominance heritability to complex trait variation.
AMERICAN JOURNAL OF HUMAN GENETICS
(2021)
Article
Agriculture, Dairy & Animal Science
Sheikh Firdous Ahmad, Nusrat Nabi Khan, Dibyendu Chakraborty, Mubashir Ali Rather, Syed Shanaz, Safeer Alam, Nazir Ahmad Ganai
Summary: The study aimed to estimate genetic parameters of different fibre traits in Rambouillet sheep population using a multi-trait animal model. The results showed that fibre diameter was moderately heritable, suggesting potential for improvement through selection.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2021)
Article
Agronomy
Tinashe Chatara, Cousin Musvosvi, Aristide Carlos Houdegbe, Julia Sibiya
Summary: Drought is a complex abiotic stress for crop production globally, and developing drought-tolerant genotypes of African spider plants is an effective method to achieve high yields and efficiency in water use. The selection of these crops can benefit from an understanding of genetic variability, heritability, and trait associations. This study aimed to gather information for breeding drought-tolerant African spider plant cultivars, and it found significant genotype differences in leaf yield and related traits. Traits such as number of leaves, leaf width, plant height, and stem diameter showed high heritability and genetic advance under drought stress, indicating additive gene control. Target traits to improve leaf yield under drought stress included number of leaves per plant, plant height, days to 50% flowering, relative water content, net photosynthesis, and leaf length, which had favorable direct and indirect effects.
Article
Fisheries
Claudio Manoel Rodrigues de Melo, Konstantin Divilov, Evan Durland, Blaine Schoolfield, Joth Davis, Ryan B. Carnegie, Kimberly S. Reece, Ford Evans, Chris Langdon
Summary: The Midori strain of Pacific oysters was introduced from Japan to the US West Coast as a potential alternative to the widely farmed Miyagi strain, with genetic parameters and performance traits evaluated. Despite having slightly lower values for traits such as harvest yield and average weight compared to the Miyagi strain, the Midori oysters exhibited significantly greater shell depth, showing promise as a deep-cupped oyster for the half-shell trade.
Article
Fisheries
Jinfeng Zhao, Martin Prchal, Antti Kause, Marc Vandeputte, David Gela, Hana Kocour Kroupova, Veronika Piackova, Pavel Sauer, Christoph Steinbach, Jean-Michel Allamellou, Christos Palaiokostas, Ross D. Houston, Martin Kocour
Summary: This study investigated the genetic and phenotypic background of energy reserves in Amur mirror carp and their impact on fish performance during the first winter. Results showed most traits related to energy reserves significantly decreased after the first winter, with differing genetic correlations and heritability before and after the winter. Interestingly, genetic correlations between HP glycogen traits and survival in the third growing season were positive, suggesting a genetically based strategy for energy mobilization in common carp. Monitoring FC and HSI could be useful for managing carp stocks.
Article
Materials Science, Textiles
Sheikh Firdous Ahmad, Mubashir Ali Rather, Syed Shanaz, Nusrat Nabi Khan, Nazir Ahmad Ganai
Summary: The present study utilized a multivariate animal model to analyze the genetic parameters of fiber traits in Kashmir Merino sheep population. The results showed that these traits have a genetic basis and positive genetic correlations exist between different traits, ranging from moderate to high.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Fisheries
Yong Chi, Gaowei Jiang, Yuanxin Liang, Chengxun Xu, Qi Li
Summary: Selective breeding has shown promising results in improving summer survival in Pacific oysters. The study found that summer survival has a moderate heritability and a positive correlation with growth traits. The realized genetic gain of summer survival increased over generations, indicating the effectiveness of the breeding program.
Article
Agronomy
Yuanshuo Qu, Edwin J. Green, Stacy A. Bonos, William A. Meyer
Summary: In this study, the use of rain-out shelters to improve drought tolerance in tall fescue was investigated, revealing small and unstable improvement during the recurrent selection process. Low narrow-sense heritability estimates were found, potentially explaining the observed lack of significant improvement.
JOURNAL OF AGRONOMY AND CROP SCIENCE
(2022)
Article
Agriculture, Multidisciplinary
Blessing Chapepa, Marco Mare, Washington Mubvekeri, Dumisani Kutywayo
Summary: This research analyzed the broad-sense heritability of different cotton genotypes and found significant differences in traits such as yield, boll size, lint production, and plant height. The study also detected genotype by environmental interactions, which facilitated easier selection of elite cotton lines.
COGENT FOOD & AGRICULTURE
(2022)
Article
Agronomy
Madeliene L. Facy, Michelle L. Hebart, Helena Oakey, Rudi A. McEwin, Wayne S. Pitchford
Summary: Female fertility is crucial in beef breeding programs. However, limited genetic progress has been made due to long generation intervals and inadequate phenotyping. Days to calving (DC) is a potential trait for genetic improvement and increased weaning rate. Genetic parameters and correlations were estimated for DC in different joinings (first, second and third+) and lactation status (lactating and non-lactating) in a tropical composite cattle population. The study found that first joining DC and mature joining DC had a moderate-high genetic correlation (0.55-0.83). However, there was no correlation between DC in multiparous lactating and non-lactating cows (r(G) = -0.10). The correlation between mature joining DC and second joining lactating DC was stronger (0.41-0.69) compared to second joining non-lactating DC (-0.14 to -0.16). Therefore, different joinings and lactation status should be treated as separate traits to maximize genetic gain.
Article
Ecology
Monika Jablonszky, David Canal, Gergely Hegyi, Marton Herenyi, Miklos Laczi, Oscar Lao, Gabor Marko, Gergely Nagy, Balazs Rosivall, Eszter Szasz, Janos Torok, Sandor Zsebok, Laszlo Zsolt Garamszegi
Summary: This study investigated the heritability of song traits in the collared flycatcher. The results showed small additive genetic variance and heritability values in all song traits, highlighting the role of environmental factors in shaping bird song.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Agriculture, Dairy & Animal Science
N. McHugh, T. Pabiou, K. McDermott, D. P. Berry
Summary: Carcass value and age at slaughter are important factors in meat sheep enterprises, but their genetic variability is not well understood. This study estimated genetic (co)variances for and among various carcass traits and age at slaughter, as well as their relationship with traits measured earlier in life. The results showed significant exploitable genetic variability in slaughter traits, and the prediction of genetic merit for carcass traits and age at slaughter is possible using live weight measures. The accuracy of selection for slaughter traits increased with the availability of slaughter data on progeny.
Article
Agriculture, Dairy & Animal Science
Sergio Fernandez Moya, Carlos Iglesias Pastrana, Carmen Marin Navas, Maria Josefa Ruiz Aguilera, Juan Vicente Delgado Bermejo, Francisco Javier Navas Gonzalez
Summary: This study examines the predator/prey interaction and identifies factors such as predator species, age, status, time elapsed, prey species, and terrain relief that affect the success of prey escaping from big cats. The findings provide insights into the predatory abilities and anti-predation strategies of big cats, and can be used to improve environmental enrichment programs in captivity and design selective strategies for domestic animals.
Article
Veterinary Sciences
Antonio Gonzalez Ariza, Ander Arando Arbulu, Jose Manuel Leon Jurado, Francisco Javier Navas Gonzalez, Sergio Nogales Baena, Maria Esperanza Camacho Vallejo
Summary: This study compared the egg laying performance of different varieties of an endangered Utrerana hen breed and found that the best-fitting models for egg production curves varied among the different varieties. This has implications for developing production strategies and conserving genetic resources.
RESEARCH IN VETERINARY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Amado M. Canales, Maria E. Camacho, Antonio H. Beltran, Juan Delgado, Vincenzo Landi, Amparo M. Martinez
Summary: The domestic turkey is at risk of extinction due to the introduction of new breeds specializing in meat production. Different from their wild counterparts, domestic turkeys are descended from Mexican turkeys and have been reproduced throughout Latin America. The genetic diversity of domestic turkey populations from 10 different regions worldwide was evaluated, with the most diverse breeds found in Andalusia, Mexico, United States, and wild populations.
Article
Green & Sustainable Science & Technology
Bolier Torres, Carlos Bravo, Alexandra Torres, Cristhian Tipan-Torres, Julio C. Vargas, Robinson J. Herrera-Feijoo, Marco Heredia-R, Cecilio Barba, Anton Garcia
Summary: This study conducted in the Ecuadorian Amazon Region compares the carbon storage in traditional pasture with dispersed trees (PWT) and pasture in monoculture (PM). The results showed significant differences in carbon biomass between PWT and PM, with PWT having a higher carbon storage capacity. The study provides recommendations for improving cattle ranching systems through a silvopastoral approach.
Article
Agriculture, Dairy & Animal Science
Martina Macri, Maria Gracia Luigi-Sierra, Dailu Guan, Juan Vicente Delgado, Javier Fernandez Alvarez, Marcel Amills, Amparo Martinez Martinez
Summary: Hematological traits are important indicators of health status. In humans, the genomic architecture of blood traits has been extensively studied, but the association between marker genotypes and hematological traits in goats has not been investigated yet.
Article
Agriculture, Dairy & Animal Science
Javier Fernandez Alvarez, Francisco Javier Navas Gonzalez, Jose Manuel Leon Jurado, Carlos Iglesias Pastrana, Juan Vicente Delgado Bermejo
Summary: Murciano-Granadina goats have improved dairy-linked conformation traits while maintaining adaptability to the environment. Evaluation of genetic and phenotypic parameters for each trait can help design a selection strategy that maximizes dairy potential and efficiency. Selection of major areas may require restructuration of current scales. This study provides important insights for the breeding program and international competitiveness of Murciano-Granadina goats.
Article
Biochemistry & Molecular Biology
Amy K. K. McLean, Tara Falt, Essam M. M. Abdelfattah, Brittany Middlebrooks, Sophie Gretler, Sharon Spier, David Turoff, Francisco Javier Navas Gonzalez, Heather K. K. Knych
Summary: The recent approval of transdermal flunixin meglumine (FM) in cattle could potentially be applied to donkeys for pain relief. A study was conducted to evaluate the pharmacokinetics and effects of FM on anti-inflammatory biomarkers in donkeys. Transdermal administration of FM was found to be effective in controlling inflammation in donkeys.
Article
Biology
Carlos Iglesias Pastrana, Francisco Javier Navas Gonzalez, Juan Vicente Delgado Bermejo, Elena Ciani
Summary: Female dromedaries adjust the onset of parturition to give birth during darker and safer nights. Weather variables, such as mean wind speed, can also affect the time of delivery. The onset of parturition for male offspring may occur on slightly brighter nights and when mean wind speed is lower compared to female offspring.
Article
Agriculture, Dairy & Animal Science
Esther Diaz Ruiz, Antonio Gonzalez Ariza, Jose Manuel Leon Jurado, Ander Arando Arbulu, Alejandra Bermudez Oria, Africa Fernandez Prior, Juan Vicente Delgado Bermejo, Francisco Javier Navas Gonzalez
Summary: The addition of hydroxytyrosol as an exogenous antioxidant in the cryopreservation diluent can effectively mitigate the negative effects of reactive oxygen species on the spermatozoa membrane. Total motility, hypo-osmotic swelling test, and amplitude of lateral head displacement were identified as the most discriminant variables. The study highlights the importance of optimizing cryopreservation techniques for genetic material preservation and conservation programs of endangered avian breeds.
Article
Food Science & Technology
Jose Ignacio Salgado Pardo, Francisco Javier Navas Gonzalez, Antonio Gonzalez Ariza, Jose Manuel Leon Jurado, Ines Galan Luque, Juan Vicente Delgado Bermejo, Maria Esperanza Camacho Vallejo
Summary: The present research aimed to determine the main differences in meat and carcass quality traits among turkey genotypes worldwide and describe the clustering patterns through the use of a discriminant canonical analysis (DCA). A comprehensive analysis of 75 documents discussing carcass and meat characteristics in the turkey species was performed, revealing statistically significant differences in various traits. The clustering analysis showed potential for the traceability of turkey genotypes.
Article
Veterinary Sciences
Javier Fernandez Alvarez, Francisco J. Navas J. Gonzalez, Jose M. Leon Jurado, Antonio Gonzalez Ariza, Maria A. Martinez Martinez, Carlos Iglesias Pastrana, Maria G. Pizarro Inostroza, Juan V. Delgado V. Bermejo
Summary: Genomic tools were used to investigate the effect of individual haplotypes of the casein complex on breeding values in goats. The study found that there were no significant differences in breeding values for αS1, αS2, and κ-casein, but there were significant differences for β-casein. Certain β-casein haplotypes were associated with increased quantities of higher quality milk and increased breeding values. Careful selection is necessary to avoid indirect selection against other traits and to achieve optimal dairy morphological types in goats.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Food Science & Technology
Jose Villegas-Perez, Francisco Javier Navas-Gonzalez, Salud Serrano, Fernando Garcia-Viejo, Leandro Buffoni
Summary: Trichinellosis is a foodborne disease transmitted through ingestion of raw or undercooked meat containing the first larval stage of the nematode. Meat inspection for Trichinella larvae is mandatory in EU regulations to ensure food safety. Implementing quality assurance practices in laboratories responsible for Trichinella detection is crucial in protecting public health. This study analyzed the outcomes of implementing Quality Management Systems in slaughterhouses and game handling establishments involved in Trichinella testing in southern Spain.
Article
Veterinary Sciences
Carmen Marin Navas, Juan Vicente Delgado Bermejo, Amy Katherine McLean, Jose Manuel Leon Jurado, Antonio Rodriguez de la Borbolla y Ruiberriz de Torres, Francisco Javier Navas Gonzalez
Summary: Genetic diversity and demographic parameters were calculated to evaluate the historical effects of coat color segregation in the configuration of the Hispano-Arabian horse breed. The study found that ignoring coat color inheritance patterns and banning certain coat colors in history may have reduced diversity loss. Additionally, crossbreeding may increase the occurrence of specific coat color combinations. However, coat color bans could lead to longer generation intervals. These findings highlight the importance of considering coat color conditioning effects.
VETERINARY SCIENCES
(2022)