Studies on the Microbe Control at Bovine Embryo Production by In Vitro Fertilization

소 체외수정란 생산에 있어 미생물 제어에 관한 연구

These studies were conducted to investigate the microbe control effect of antibiotics treatment in all media used for in vitro fertilization(IVF) embryo production. The bovine oocytes were recovered from follicles(2~5mm) and were cultrued for 22hrs at 38.5$^{\circ}C$ with 5% CO2 incubator. The contamination and development rate in vitro fertilized oocyte was evaluated everyday. The results were summerized as follow ; 1. Control, antibiotic-antimycotic solution(AAS, Gibco) 1%＋gentamycin, and AAS 1%＋kanamycin(Sigma, USA) treatment was contaminated with 72hrs. However Baytril and Kanamycin(Korea) added was not contaminated. 2. The blastocyst formation rate in Baytril supplementated 1, 2 and 3${mu}ell$/ml was 3.73, 1.28 and 0.00%, respectively. 3. The blastocyst formation in kanamycin added concentration of 50, 75 and 100$\mu\textrm{g}$/ml was 13.0, 9.4 and 3.49%, respectively.