Abstract Study question Is the efficacy of embryo selection models altered by conditions employed for culture? Summary answer The predictive capacity morphology and morphokinetics-based might be dependent on incubator culture employed. What is known already Morphological assessment remains gold-standard selection. However, since introduction time-lapse technology to incubators used culture, man...

Embryo cryopreservation is a valuable tool for maintaining genetic variability and preserving breeds lines, allowing to assess the response selection enabling diffusion. This study aimed evaluate impact of rederivation by embryo vitrification transfer procedures on growth reproductive traits in paternal rabbit line selected average daily gain from weaning (28 days old) fattening (63 old). The r...

Background: Today factors including cultural, social, religious, economic and medical such as X Linked diseases encouraged couples to choose traditional methods or new treatment for selecting the gender of child. It seems that Spermatozoa containing chromosomes X and Y have different speed in various pH. In this study the velocity of spermatozoa in different acidic pH was evaluated. Materials a...