Abstract:
The purpose of this study was to investigate the two major factors; oocyte and sperm preparation influencing the success of in vitro fertilization inn pig. Two expperiments were conducted: Experiment I: Factors of oocyte preparation. It composed of three subfactors as : time of oocyte maturation, oocyte type and source of ooctyes. A total of 1,086 oocyted were allocated for the experiments. The 40 to 48 hrs of oocyte culture time was sutitable for a high rate of embryonic development. The complex cumulus oocytes (CCO) gave the highedt rate of cleavage compared to the rate obtained from single layers and denude oocytes. Sow ovary can be used for a source of oocytes but the cleavage rate was lower than that of gilt's ovary. Experiment II: Factors of sperm preapration. Three subfactors, by using 1,235 oocytes, were conducted in order to evaluate the type of sperm which was epididymal or ejaculated sperm, time of sperm capacitation and type of sperm motility-stimuating agents; Penicillamine Hypotarine Epinephrine (PHE) or Caffeine on the success of in vitro fertilization. It was found that the cleavage rate between epididymal and ejaculated sperm was not different as well as the results between PHE and Caffeine. Nevertheless, the highest of cleavage rate was found in the group of one hour capacitation compared to the groups of two and four hour capaciation. This study showed some factors; oocyte and sperm preparation influcenced on the success of in vitro fertilization in pig.