We report two coding-complete genome sequences of porcine reproductive and respiratory syndrome virus 2 from field clinical samples obtained in 2021 (BA2021012A) and 2023 (ME20230008B-2) from the Philippines. BA2021012A (15,388 bp) is classified as a lineage L8C strain while ME20230008B-2 (15,513 bp) is a vaccine-like strain in lineage L7.
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http://dx.doi.org/10.1128/mra.01164-24 | DOI Listing |
Animals (Basel)
December 2024
College of Animal Science, South China Agricultural University, Guangzhou 510642, China.
The impact of antibiotic therapy on the spread of antibiotic resistance genes (ARGs) and its relationship to gut microbiota remains unclear. This study investigated changes in ARGs, mobile genetic elements (MGEs), and gut microbial composition following tilmicosin administration in pigs. Thirty pigs were randomly divided into control (CK), low-concentration (0.
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December 2024
College of Animal Science and Technology, Shihezi University, Shihezi 832000, China.
Early embryonic development relies on intricately regulated gene expression, and miRNAs influence zygotic genome activation (ZGA), cleavage, and cell fate determination through post-transcriptional regulatory mechanisms. miR-192 is expressed in early pig embryos and participates in various reproductive processes. However, its role in pre-implantation pig embryo development remains poorly understood.
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December 2024
State Key Laboratory of Swine and Poultry Breeding Industry, National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China.
Artificial insemination (AI), as an efficient assisted reproduction technology, can help the livestock industry to improve livestock and poultry breeds, optimize production performance and improve reproductive efficiency. AI technology has been widely used in pig production in China, but boar fertility affects the effectiveness of AI, and more and more studies have shown that there are significant differences in the fertility of boars with similar semen quality indicators. Therefore, this study aimed to identify biomarker molecules that indicate the level of boar fertility, which is important for improving the efficiency of AI.
View Article and Find Full Text PDFAnimals (Basel)
December 2024
State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China.
Retinoic acid (RA) plays a critical role in initiating meiosis in primordial germ cells (PGC), yet the specific mechanisms of its interaction with PGC remain unclear. In this study, we used an in vitro feeder-free culture system with chicken PGC as a model to explore the mechanisms by which RA induces the entry of PGC into meiosis. Results demonstrated that exogenous RA treatment altered the cell cycle distribution of PGC, significantly increasing the proportion of cells in the G1 phase and decreasing those in the G2 phase, suggesting that RA may promote the transition of PGC from proliferation to differentiation.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, Heilongjiang, PR China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, PR China. Electronic address:
Porcine reproductive and respiratory syndrome virus (PRRSV) demonstrates a significantly high prevalence among swine populations. Monoclonal antibodies (mAbs) with high affinity for conserved epitopes of PRRSV can facilitate the development of a broad-spectrum detection method for this virus. This study identified two PRRSV-specific mAbs, designated 2B1 and 2C6, which recognized two conformation-dependent epitopes through indirect immunofluorescence assay (IFA) and Western blot analysis.
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