Bioscientifica Proceedings

Cryopreservation of female germplasm has basic importance in preservation and distribution of genetic lines in farm animals. Although vitrification technology has been applied for the cryopreservation of porcine oocytes and ovarian tissues, reduced developmental competence of preserved oocytes and the lack of offspring produced from them underlines the importance for further developments in cryopreservation protocols for this purpose. This review discusses the problems o...

In vitro production (IVP) including in vitro maturation (IVM) and fertilization (IVF) is now an important technology for obtaining live piglets. However, there are still two significant obstacles to the efficient production of viable porcine embryos: (1) polyspermy and (2) fertilization of oocytes arrested at the immature stage. These phenomena relate to production of embryos with abnormal ploidy (polyploidy). To avoid these problems, careful selection of mature oocytes ...

Abstract. It was once thought that processes of conceptus implantation and placentation vary among mammalian species. However, physiological and biochemical processes including gene expression show more similarities than differences. In fact, recent progress has identified that in addition to the hormones, cytokines, proteases and cell adhesion molecules classically characterized, epithelial-mesenchymal transition (EMT), epigenetic regulation and the expressio...

Abstract unavailableKeywords: inhibin; oestradiol; cow; pig; FSH© 1991 Journals of Reproduction & Fertility Ltd...