Abstract
The effects of two commonly used cell culture mitogens, pokeweed (PWM) and phytohemagglutinin (PHA) on bovine oocyte maturation in vitro (IVM) and preimplantation embryo development in vitro were evaluated by randomized complete block experimental design with three treatments. Effects were measured by quantifying subsequent embryo development. Oocyte maturation was adversely affected by PWM-containing medium as indicated by a decrease in cleavage rate and subsequent embryo development to morula and blastocyst stages. Embryo developmental competence was also adversely affected by PWM. Development in PHA-containing medium was significantly better ( P<0.05) than in the PWM treatment, although there was no difference ( P>0.05) when compared to Control. We conclude that there are no beneficial effects in adding mitogenic agents to culture medium to enhance in vitro embryo production and development.
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