作者: Ninoska Madrid-Bury , Raúl Fernández , Adela Jiménez , Sonia Pérez-Garnelo , Pedro Nuno Moreira
DOI: 10.1017/S0967199403002272
关键词:
摘要: Offspring gender preselection has applications of considerable economic, health and ecological interest. In this study we analysed modifications the percentages spermatozoa bearing Y X chromosomes when semen samples are submitted to a double swim-up technique as possible method for producing embryos known sex with in vitro fertilisation protocols. As an initial experiment provide accurate evaluation determined incidence natural deviations primary ratio between bulls or ejaculates, analysing percentage Y-chromosome DNA (%Y-CDBS) polymerase chain reaction (PCR) amplification X- Y-specific fragments. Ejaculates were tested by direct semiquantitative PCR sexing blastocysts produced these spermatozoa. Bulls ejaculates did not have any effect on %Y-CDBS using ejaculates. However, our sperm preparation differences some fractions, suggesting that there intrinsic capacitation Y-bearing might be used produce desired fertilisation.