Influence of Factors during Superovulation on Embryo Production in Korean Holstein Cattle

Effect of different doses of FSH on superovulation, production and quality of embryo in North Omani Cattle breed

The experiment was conducted to investigate the Ovarian response and embryo quality using different doses of follicle stimulating hormone (FSH-P) in North Omani Cattle breed (NOC) in order to determine the suitable dose. Eighteen donor NOC were divided into three groups (G1, G2, and G3) comprising of six cows in each group and treated with 20 (G1), 25 (G2) and 30 mg FSH (G3). Ovarian response w...

Evaluation of different strain mice during in vitro fertilization and embryo development in response to superovulation

Background: Mice are the most commonly used animal in reproductive research and following the urgent need for these type of studies and also due to the increased interest in the ethical principle of animal rights, four various inbred and outbred strains of the laboratory mouse were evaluated to select the more efficient one for reproductive research. Materials and methods: 60 female and 16 mal...

Effect of Ovarian Cyclic Status on In Vitro Embryo Production in Cattle

Timing of artificial insemination and embryo production in superovulated Holstein cattle

The objective was to evaluate the effect of the first artificial insemination (AI) on the number of viable and degenerated embryos, total embryos and unfertilized oocytes, and fertilization rate in Holstein donor cows. Cows (n=22) and heifers (n=50) were synchronized by the Crestar (Intervet International B.V., Boxmeer, Holland) protocol where 3 mg of norgestomet are implanted subcutaneously in...

the effect of e-64 on the developmental competence of sheep cocs during in vitro maturation

in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.