Embryo technological procedures such as in vitro production and cloning by nuclear transfer
are not as advanced in pigs as in cattle and cannot yet be applied under field conditions …

Nuclear transfer of somatic cells and other biotechnologies applied to embryo production in
vitro yield very few embryos that are competent to become live offspring. Multiple factors can …

Contents The survival and development of pre‐implantation embryos are determinant
factors affecting the outcome of animal reproduction. It is essential to transfer the expression …

Transcription of ribosomal RNA (rRNA) genes occurs in the nucleolus resulting in ribosome
synthesis. In cattle and swine embryos, functional ribosome-synthesizing nucleoli become …

The pig is one of most important and valuable animals as livestock for not only meat
producers but also medical use such as organ donors for X/ENotransplantation and as …

The onset of ribosomal RNA (rRNA) synthesis occurs during the second half of the third cell
cycle, that is, at the four‐cell stage, in porcine embryos developed in vivo. In the present …

The preimplantation bovine embryo is initially under the control of maternal genomic
information that is accumulated during oogenesis. The genetic programme of development …

During nuclear transfer, reprogramming makes the donor nucleus capable of directing
development of the reconstructed embryo. In most cases reprogramming is incomplete …

In mammals, growing oocytes have characteristically high levels of RNA synthesis. After the
initiation of meiosis, that is germinal vesicle breakdown, this RNA synthesis ceases …

Pregnancy is a complex process in which significant changes occur continually in both the
corpora lutea and in the endometrium of the females and varies depending on the …