Article
Agriculture, Dairy & Animal Science
Alan J. Twomey, Andrew R. Cromie
Summary: Reducing the age at first calving (AFC) in beef cows is economically beneficial. Cows that calve at younger ages are more likely to receive assistance at calving but this risk can be minimized with good management. Overall, AFC has a small impact on key performance traits in beef herds.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Biotechnology & Applied Microbiology
Yahui Gao, Alexis Marceau, Victoria Iqbal, Jose Antonio Torres-Vazquez, Mahesh Neupane, Jicai Jiang, George E. Liu, Li Ma
Summary: Our large-scale GWAS analyses identified a major QTL in the bovine MHC region for early first calving in heifers. Additional functional enrichment and TWAS analyses confirmed the MHC QTL with relevant biological evidence. Our results revealed the complex genetic basis of heifer health and fertility traits and indicated a potential connection between the immune system and reproduction in cattle.
Article
Reproductive Biology
Miki Sakatani, Rie Sawado, Masafumi Miwa, Takuo Hojo, Masahito Tanaka, Naoki Takenouchi
Summary: Monitoring vaginal temperature changes with a sensor can predict calving. Holstein and primiparous dams showed higher temperatures and significant temperature differences. Primiparous dams exhibited wider temperature differences compared to multiparous dams.
Article
Agriculture, Dairy & Animal Science
Michalina Jakimowicz, Joanna Szyda, Andrzej Zarnecki, Wojciech Jagusiak, Malgorzata Morek-Kopec, Barbara Kosinska-Selbi, Tomasz Suchocki
Summary: The study found significant associations between traits related to calving and workability in cows and SNPs, gene ontologies, and metabolic pathways. Significant SNPs were identified at the genetic level, while significant gene ontology terms and metabolic pathways were found at the functional level. These findings are important for a better understanding of the genomic background of the phenotypes.
Article
Environmental Sciences
Frikkie Alberts Mare
Summary: This study analyzed the relationship between water footprint and economic value of different beef cattle breeds, identifying the breed with the best economic water consumption through a bottom-up approach. Results showed significant differences between breeds in water footprint, and also highlighted the varying impact of different value chain links on economic water consumption.
Article
Microbiology
Magdalena Nuesch-Inderbinen, Michael Biggel, Adrian Haussmann, Andrea Treier, Lore Heyvaert, Nicole Cernela, Roger Stephan
Summary: This study aimed to evaluate the occurrence of cfr, optrA, and poxtA genes in florfenicol-resistant isolates from beef cattle and veal calves. The results showed that beef cattle and veal calves are reservoirs for enterococci with acquired linezolid resistance genes optrA and poxtA. This poses a risk to public health.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Food Science & Technology
Jiayuan Wu, Tianyi Wu, Xueyuan Xie, Qunhao Niu, Zhida Zhao, Bo Zhu, Yan Chen, Lupei Zhang, Xue Gao, Xiaoyan Niu, Huijiang Gao, Junya Li, Lingyang Xu
Summary: In this study, CNV analysis was used to investigate the genetic mechanism of meat quality traits. Significant CNV segments and candidate genes related to meat quality were identified. These findings will enhance the selection process in breeding programs.
Article
Biochemistry & Molecular Biology
Fernando Jose Schalch Junior, Guilherme Henrique Gebim Polizel, Fernando Augusto Correia Queiroz Cancado, Aricia Christofaro Fernandes, Isabela Mortari, Pedro Ratto Lisboa Pires, Heidge Fukumasu, Miguel Henrique de Almeida Santana, Arlindo Saran Netto
Summary: This study investigated the impact of different prenatal nutrition on the plasma metabolome of Nellore dams and their offspring. The findings suggest that fetal programming mainly affects amino acid metabolism and may result in transgenerational epigenetic changes.
Article
Agriculture, Dairy & Animal Science
Andrew D. Lakamp, Cashley M. Ahlberg, Kristi Allwardt, Ashely Broocks, Kelsey Bruno, Levi Mcphillips, Alexandra Taylor, Clint R. Krehbiel, Michelle S. Calvo-Lorenzo, Chris Richards, Sara E. Place, Udaya Desilva, Larry A. Kuehn, Robert L. Weaber, Jennifer M. Bormann, Megan M. Rolf
Summary: Predicted methane traits are heritable and easy to calculate, making them potential candidates for selecting animals with low methane production. Using a mathematical model to predict methane production can overcome the difficulties and expenses of direct measurement, and animals can be ranked similarly regardless of the model used. A genome-wide association study identified significant loci and genes related to predicted methane production, including oxidoreductase activity and collagen production.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Biotechnology & Applied Microbiology
Pengcheng Lyu, Robert E. Settlage, Honglin Jiang
Summary: Tens of thousands of H3K27ac-marked active enhancers have been identified from bovine satellite cells before or during differentiation. These enhancers contain binding sites not only for transcription factors whose role in satellite cell differentiation is well known but also for transcription factors whose role in satellite cell differentiation is unknown. These enhancers and transcription factors are valuable resources for understanding the complex mechanism that mediates gene expression during satellite cell differentiation.
Article
Multidisciplinary Sciences
Rocio Amorin, Lihe Liu, Philipe Moriel, Nicolas DiLorenzo, Phillip A. Lancaster, Francisco Penagaricano
Summary: Maternal nutrition during pregnancy can lead to epigenetic alterations in the fetal genome, and this study found that maternal methionine supplementation during preconception and early pregnancy could induce persistent changes in the fetal epigenome.
SCIENTIFIC REPORTS
(2023)
Article
Agriculture, Dairy & Animal Science
Xinghai Duan, Bingxing An, Lili Du, Tianpeng Chang, Mang Liang, Bai-Gao Yang, Lingyang Xu, Lupei Zhang, Junya Li, E. Guangxin, Huijiang Gao
Summary: By comparing three nonlinear models describing body weight data of Chinese Simmental beef cattle, 87 significant SNPs associated with body weight were identified, along with many candidate genes. Through single-trait and multi-trait GWAS analysis, significant SNPs related to body weight were determined, with several candidate genes previously reported to associate with growth and development. Further research on these candidate genes may aid in exploring the full genetic architecture underlying growth and development traits in livestock.
Article
Agriculture, Dairy & Animal Science
Lindsey G. Wichman, Colby A. Redifer, Allison M. Meyer
Summary: Nutrient restriction during late gestation negatively affects the growth and immune function of calves, resulting in weaker vigor and more trauma after birth.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Agriculture, Multidisciplinary
Tiago Albandes Fernandes, Ricardo Zambarda Vaz, Joao Restle, Liliane Cerdotes, Amoracyr Jose Costa Nunez, Pablo Tavares Costa, Otoniel Geter Lauz Ferreira
Summary: This study evaluates the morphometrics of purebred Nellore and Charolais animals and their alternating crosses, and it shows that crossbred animals have greater development compared to purebreds, with increased musculature and height.
Article
Veterinary Sciences
Nicole Burdick C. Sanchez, Paul R. Broadway, Jeffery A. Carroll
Summary: The study revealed distinct differences in the acute phase response to respiratory disease challenge between heifers and steers, with steers showing an early response and heifers exhibiting a delayed response. This suggests that heifers may be more resilient to viral-bacterial challenge compared to steers.
VETERINARY SCIENCES
(2022)