Developmental competence of bovine embryos reconstructed by the transfer of somatic cells derived from frozen tissues.

O-7: Improved In Vitro Development of Cloned Bovine Embryos Using S-Adenosylhomocysteine,A Non-Toxic Epigenetic

Background: Development of cloned bovine embryos. Materials and Methods: Oocytes collection,oocyte denudation, oocyte enucleation, nuclear transfer, electrofusion, reconstructed embryo activation, culture of reconstructed and IVF embryo,and treatment with SAH post fusion interval Treatment of reconstructed embryos with TSA for 12 hours after activation, preparation of somatic donor cells, donor...

Impact of in vitro fertilization by fresh and frozen semen on developmental competence and cryotolerance of buffalo embryos

Production of high quality embryos in vitro needs an efficient in vitro fertilization (IVF). Seminal origin is one of the important factors that affects the success of in vitro embryo production. So our goal was to determine the effect of using fresh and frozen semen in fertilization on developmental competence and cryo-survival of buffalo embryos. Buffalo oocytes wer...

P-118: Developmental Competence of Ovine Embryos Derived from Frozen Oocytes Co-Cultured with Embryos Derived from Fresh Oocytes

Background: Currently, a limited number of studies have been done on the vitrification of small ruminant oocytes, especially in sheep, where poor developmental rates are obtained following immature and mature oocyte vitrification. Poor ovine oocyte cryopreservation could attribute to the damage to enzymes which has role in metabolic pathways. Therefore, production of cytokines and growth factor...

Developmental Competence and Pluripotency Gene Expression of Cattle Cloned Embryos Derived from Donor Cells Treated with 5-aza-2'-deoxycytidine

Evaluation of Embryos Derived from in vitro Fertilized Oocytes Reconstructed by Meiosis-II Chromosome Transplantation from Aged Mice to Ooplasms of Young Mice

Background To assess embryos derived by the transfer of meiosis-II chromosomes (M-II-t) from aged mice oocytes into ooplasms from younger mice to overcome the problem of age-related decline in female fertility. MaterialsAndMethods The developmental capacity karyotype and ultrastructure of reconstructed oocytes derived from meiosis-II chromosome transplantation from aged mice into the ooplasms o...