Article
Agriculture, Dairy & Animal Science
Christos Dadousis, Michela Ablondi, Claudio Cipolat-Gotet, Jan-Thijs Van Kaam, Maurizio Marusi, Martino Cassandro, Alberto Sabbioni, Andrea Summer
Summary: This study estimated inbreeding coefficients in Holstein dairy cattle using imputed SNP data. Ten widely used genomic inbreeding estimators were tested and compared. Results showed variability among the estimators, with ROH-based methods having the highest correlation with pedigree-based coefficients. Spearman correlations were shown to provide a clearer estimation of the relationship strength between estimators. Imputation was found to potentially cause extreme genomic inbreeding values that require further investigation.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Motohide Nishio, Keiichi Inoue, Shinichiro Ogawa, Kasumi Ichinoseki, Aisaku Arakawa, Yo Fukuzawa, Toshihiro Okamura, Eiji Kobayashi, Masaaki Taniguchi, Mika Oe, Kazuo Ishii
Summary: The use of genomic data allows for more accurate assessment of inbreeding level and depression. Genome-based inbreeding coefficients show stronger correlations with pedigree-based inbreeding coefficients, particularly those based on runs of homozygosity (ROH) segments and heterozygosity by descent segments (HBD). Genome-based inbreeding coefficients have more significant effects on reproductive traits compared to pedigree-based inbreeding coefficients.
Article
Agriculture, Dairy & Animal Science
F. L. Guinan, G. R. Wiggans, H. D. Norman, J. W. Durr, J. B. Cole, C. P. Van Tassell, I. Misztal, D. Lourenco
Summary: Genomic selection accelerates genetic changes in populations by increasing accuracy and decreasing generation interval. The genetic gain and inbreeding levels of US dairy cattle breeds since the implementation of genomic evaluations in 2009 were examined. The Holstein and Jersey breeds have seen the most significant increase in genetic gain since then.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Veterinary Sciences
Christos Dadousis, Michela Ablondi, Claudio Cipolat-Gotet, Jan-Thijs van Kaam, Raffaella Finocchiaro, Maurizio Marusi, Martino Cassandro, Alberto Sabbioni, Andrea Summer
Summary: The objective of this study was to evaluate the effect of imputation of single nucleotide polymorphisms (SNP) on the estimation of genomic inbreeding coefficients. The study analyzed the genotypes of 68,127 Italian Holstein dairy cows, and found that imputation of genotypes had an impact on the estimation of genomic inbreeding coefficients.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Sarune Marasinskiene, Ruta Sveistiene, Violeta Razmaite, Alma Rackauskaite, Violeta Juskiene
Summary: The study investigates the genetic variability of dairy cattle populations in Lithuania and highlights the differences from the old genotypes currently under conservation. The results emphasize the need for additional measures to protect the ancestral genetic makeup of the declining Lithuanian Red cattle population. Furthermore, a concerning trend of significant decrease in effective population size per generation is observed, even in large populations with open breeding programs.
Article
Agriculture, Dairy & Animal Science
Emmanuel A. Lozada-Soto, Francesco Tiezzi, Jicai Jiang, John B. Cole, Paul M. VanRaden, Christian Maltecca
Summary: Maintaining genetic diversity in dairy cattle is crucial for adaptation and fitness. This study characterized the genomic landscape of autozygosity and genetic diversity trends in 5 US dairy cattle breeds. The results showed variations in runs of homozygosity (ROH) among breeds and selection patterns for milk production, health, and reproduction. Inbreeding coefficients revealed differences in inbreeding accumulation among breeds. Furthermore, the effective population size has been decreasing historically.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Veterinary Sciences
Michela Ablondi, Alberto Sabbioni, Giorgia Stocco, Claudio Cipolat-Gotet, Christos Dadousis, Jan-Thijs van Kaam, Raffaella Finocchiaro, Andrea Summer
Summary: Genetic diversity is crucial for the long-term sustainability and future market demands of Italian Holstein dairy cattle. The use of genomic data in breeding programs has increased genetic gain but may also lead to potential loss of genetic variability.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Article
Genetics & Heredity
Alejandra M. Toro-Ospina, Ana C. Herrera Rios, Gustavo Pimenta Schettini, Viviana H. Vallejo Aristizabal, Wellington Bizarria dos Santos, Cesar A. Zapata, Edna Gicela Ortiz Morea
Summary: The Caqueteno Creole (CAQ) is an important native breed of cattle adapted to tropical conditions, but has been poorly studied. By analyzing runs of homozygosity (ROH), it was found that inbreeding frequency decreased and genomic hotspot regions were identified, potentially associated with fertility, immunity, muscle development, and environmental resistance traits. This highlights the potential value of the CAQ breed in tropical production systems.
Article
Agriculture, Dairy & Animal Science
Susanne Eriksson, Erling Strandberg, Anna M. Johansson
Summary: Swedish Red and Swedish Holstein, the dominant dairy cattle breeds in Sweden, have undergone significant changes in genomic diversity and inbreeding over the past half-century. The study used genotyping data from old and recent bulls to analyze different measures of homozygosity, genomic inbreeding, relatedness, and allele frequency changes. The results showed that the inbreeding level was higher in the past but has decreased, although recent years have seen an increase in inbreeding coefficients and homozygosity in Swedish Holstein. The findings highlight the importance of considering these factors in future breeding strategies.
JOURNAL OF ANIMAL BREEDING AND GENETICS
(2023)
Article
Agriculture, Dairy & Animal Science
Victoria R. Merenda, Eduardo B. de Oliveira, Magdiel Lopez-Soriano, Andreia G. Arruda, Ashley Robbins, Monique D. Pairis-Garcia
Summary: This study investigates dairy workers' attitudes towards euthanasia of dairy cattle and their association with demographic characteristics. The results show that some workers feel uncomfortable with euthanasia, while others feel confident and comfortable. White workers and caretakers with previous euthanasia experience are more likely to have positive attitudes towards euthanasia, while respondents who work on farms with 501-1000 cows are more likely to have negative attitudes towards euthanasia.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Maria Martinez-Castillero, Luis Varona, Sara Pegolo, Attilio Rossoni, Alessio Cecchinato
Summary: The study investigated inbreeding load for fertility traits in Italian Brown Swiss dairy cattle, analyzing heritabilities and ratios across a range of inbreeding coefficients. It found a clear increase in inbreeding load ratios, particularly in categorical traits. Despite low reliability, predicting inbreeding load effects showed potential for improving performance in certain individuals. This suggests the feasibility of implementing breeding strategies based on favorable inbreeding load predictions.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
O. Jarnecka, E. A. Bauer, W. Jagusiak
Summary: This study described the population structure and inbreeding level of Polish Red Cattle (PRC), with an average inbreeding of 4% and 23.8% inbred animals. The results indicate the potential disruption of the balance in small populations like PRC, highlighting the need for continuous monitoring of endangered populations.
Article
Agriculture, Dairy & Animal Science
Carsten Scheper, Reiner Emmerling, Kay-Uwe Goetz, Sven Koenig
Summary: The study found no pleiotropic effects of the polled locus on test-day production traits, mastitis indicator, and several female fertility traits in German Simmental cattle, except for a significant and unfavorable effect on protein percentage.
GENETICS SELECTION EVOLUTION
(2021)
Article
Agronomy
Marie-Angelina Magne, Julien Quenon
Summary: Rotational crossbreeding, while potentially more effective than pure breeding in improving dairy cattle systems, remains rare in France due to the prevailing sociotechnical regime centered on pure-breeding and high-specialization paradigms in herd management. Despite recognized benefits for farm sustainability, the lack of technical references and presence of various barriers hinder widespread adoption of dairy crossbreeding practices.
AGRONOMY FOR SUSTAINABLE DEVELOPMENT
(2021)
Article
Agriculture, Dairy & Animal Science
Victoria R. Merenda, Eduardo B. de Oliveira, Heather N. Fowler, Monique D. Pairis-Garcia
Summary: This study aimed to explore perspectives and attitudes about euthanasia in the Brazilian dairy cattle industry. The lack of nationally recognized euthanasia guidelines and effective euthanasia tools makes it challenging for veterinarians to carry out humane on-farm euthanasia. Additionally, logistical factors and the human-animal bond also contribute to the failure to perform euthanasia when necessary. Future research should focus on developing science-based standards and training programs to improve consistency in on-farm euthanasia in Brazilian dairy operations.
Article
Biotechnology & Applied Microbiology
Young-Lim Lee, Mirte Bosse, Erik Mullaart, Martien A. M. Groenen, Roel F. Veerkamp, Aniek C. Bouwman
Article
Agriculture, Dairy & Animal Science
E. M. M. van der Heide, R. F. Veerkamp, M. L. van Pelt, C. Kamphuis, B. J. Ducro
JOURNAL OF DAIRY SCIENCE
(2020)
Article
Agriculture, Dairy & Animal Science
G. F. Difford, P. Lovendahl, R. F. Veerkamp, H. Bovenhuis, M. H. P. W. Visker, J. Lassen, Y. de Haas
JOURNAL OF DAIRY SCIENCE
(2020)
Article
Reproductive Biology
Claudia Kamphuis, Pascal Duenk, Roel Franciscus Veerkamp, Bram Visser, Gurnoor Singh, Annette Nigsch, Rudi Maria De Mol, Marleen Leonarda Wilhelmina Johanna Broekhuijse
Article
Agriculture, Dairy & Animal Science
D. Schokker, I. N. Athanasiadis, B. Visser, R. F. Veerkamp, C. Kamphuis
Article
Biotechnology & Applied Microbiology
Aniek C. Bouwman, Martijn F. L. Derks, Marleen L. W. J. Broekhuijse, Barbara Harlizius, Roel F. Veerkamp
Article
Agriculture, Multidisciplinary
E. M. M. van der Heide, C. Kamphuis, R. F. Veerkamp, I. N. Athanasiadis, G. Azzopardi, M. L. van Pelt, B. J. Ducro
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2020)
Article
Agronomy
George Korontzis, Marcos Malosetti, Chaozhi Zheng, Chris Maliepaard, Han A. Mulder, Pim Lindhout, Roel F. Veerkamp, Fred A. van Eeuwijk
Article
Multidisciplinary Sciences
Dirk C. de Graaf, Dries Laget, Lina De Smet, David Claeys Bouuaert, Marleen Brunain, Roel F. Veerkamp, Evert W. Brascamp
SCIENTIFIC REPORTS
(2020)
Article
Genetics & Heredity
Biaty Raymond, Loic Yengo, Roy Costilla, Chris Schrooten, Aniek C. Bouwman, Ben J. Hayes, Roel F. Veerkamp, Peter M. Visscher
Article
Agriculture, Dairy & Animal Science
Ina Hulsegge, Kor Oldenbroek, Aniek Bouwman, Roel Veerkamp, Jack Windig
Summary: Over the past century, genetic diversity in cattle breeds has been impacted by the replacement of traditional local breeds with a few milk-producing breeds. In the Netherlands, the genetic diversity of the local Dutch Friesian breed has decreased due to being replaced by Holstein Friesians, but this did not result in increased inbreeding levels.
Article
Agriculture, Dairy & Animal Science
Ibrahim Jibrila, Jan ten Napel, Jeremie Vandenplas, Roel F. Veerkamp, Mario P. L. Calus
GENETICS SELECTION EVOLUTION
(2020)
Article
Agriculture, Dairy & Animal Science
Renzo Bonifazi, Jeremie Vandenplas, Jan ten Napel, Kaarina Matilainen, Roel F. Veerkamp, Mario P. L. Calus
GENETICS SELECTION EVOLUTION
(2020)
Article
Agriculture, Dairy & Animal Science
Biaty Raymond, Yvonne C. J. Wientjes, Aniek C. Bouwman, Chris Schrooten, Roel F. Veerkamp
GENETICS SELECTION EVOLUTION
(2020)
Article
Agriculture, Dairy & Animal Science
Jennifer L. Doyle, Donagh P. Berry, Roel F. Veerkamp, Tara R. Carthy, Ross D. Evans, Siobhan W. Walsh, Deirdre C. Purfield
GENETICS SELECTION EVOLUTION
(2020)
Article
Agriculture, Dairy & Animal Science
Adrian Lopez-Catalina, Valentin Costes, Ramon Peiro-Pastor, Helene Kiefer, Oscar Gonzalez-Recio
Summary: Epigenetic marks can explain part of the phenotypic variance in animal breeding models. Nanopore sequencing shows high correlation with bisulphite sequencing in identifying DNA methylation marks. Different sequencing methods highlight differentially methylated genes and positions of economic interest in animal breeding.