Preservation possibility studies by refrigerating swine embryos
1996
Mantea, S. (S.C. ROMSUINTEST S.A., Peris (Romania))
The experiment has proposed to check up the possibility of maintaining swine embryos viability after in vitro preservation under 18 degrees C. After the same treatment applied to embryos after collection, the embryos were allotted at two preservation variants as follows: 1. a direct introduction of embryos at the temperature of + 50 degrees C. 2. a preliminary cooling at 17 degrees C for 2 hours in a thermostat trunk followed by their moving at + 5 degrees C. The preservation time was 24 hours. The embryos from variant 2, trasferred to receiving gilts determined a survival rate (compared to the number transferred) of 13.7 per cent while the embryos from variant 1 didn't give any gestation. The results put in evidence the need of more researches to establish the system and refrigeration speed, the cryoprotective medium and optimal embryonic preservation stage.
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