Publications by authors named "R Ros-Freixedes"

Article Synopsis
  • The Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) significantly impacts pig reproduction, causing issues like smaller litters and abortions in sows, with responses varying due to genetic differences.
  • This study analyzed the reproductive performance of 183 sows to find 48 with extreme resilience to PRRSV, employing whole-genome sequencing to identify 16 genetic regions linked to their reproductive outcomes.
  • Key genes identified are involved in viral entry and the immune response, suggesting potential genetic factors that influence a sow's ability to withstand PRRSV, but further validation with larger groups is needed.
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The red-legged partridge (Alectoris rufa) is a popular game bird species that is in decline in several regions of southwestern Europe. The introduction of farm-reared individuals of a distinct genetic make-up in hunting reserves can result in genetic swamping of wild populations. Here we present a de novo genome assembly for the red-legged partridge based on long-read sequencing technology.

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Mitochondria are essential organelles in the regulation of cellular energetic metabolism. Mitochondrial DNA copy number (mtDNA_CN) can be used as a proxy for mitochondria number, size, and activity. The aims of our study are to evaluate the effect of mtDNA_CN and mitochondrial haploblocks on production traits in pigs, and to identify the genetic background of this cellular phenotype.

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The red-legged partridge Alectoris rufa plays a crucial role in the ecosystem of southwestern Europe, and understanding its genetics is vital for conservation and management. Here we sequence, assemble, and annotate a highly contiguous and nearly complete version of its genome. This assembly encompasses 96.

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The current work aimed to identify genomic regions and candidate genes associated with resilience in pigs. In previous work, we proposed the body weight deviation from the expected growth curve (ΔBW) and the increase of the positive acute-phase protein haptoglobin (ΔHP) after a vaccine challenge as resilience indicators which may be improved through selective breeding in pigs. Individuals with steady growth rate and minor activation of haptoglobin (high ΔBW and low ΔHP values) were considered resilient.

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