Female bovine donor age influence on quality markers’ expression and <i>PPARs</i> abundance in day 7 blastocysts

Abstract In bovine females, the production of embryos derived from oocytes obtained by ovum pick-up (OPU) is becoming a frequent procedure. Collection pre-pubertal animals enables shortening genetic distance, especially in high-value animals. Nevertheless, oocyte and later embryo developmental potential differ between prepubertal adult heifers. The aim this study was to determine possible underlying causes for differences quality pubertal Cumulus complexes were collected via OPU. expression PLAC8, IFNτ, IGFR1, SOX2, OCT4 blastocysts evaluated. transcriptome peroxisome proliferator-activated receptors ( PPARs ), major genes involved metabolism development embryo, marker gene OCT4) day 7 or heifers differed significantly. basic biological processes early embryonic data may be used adjust culture conditions requirements heifers, predict possibility successful embryo.