[Results of the use of nonsurgical embryo transfer in the breeding of heifers].
The results are analyzed of superovulation stimulation in the donors and the non-surgical embryo transfer in cattle. After superovulation induced by means of PMSG (Bioveta, Ivanovice in Haná) 6.2 and 6.3 ova and embryos were obtained, of which 66 to 70%, i. e. 4.2 and 4.3 embryos, respectively, were applicable in transfer. When the combination of PMSG with antigonadotropin (Antisergon, Bioveta, Ivanovice in Haná) was used, the embryos had somewhat better quality and their applicability was increased. After adjustment of the time of Antisergon administration the number of recovered ova and embryos was increased to 10.3 with 82.3% applicability (8.5 embryos per superovulation/donor). After super-ovulation stimulated with Folicotropin (Léciva, Praha) the yield of ova was 12.7, and 10.1 of the embryos (79.8%) were applicable. After the use of FSH-P (Burna-Biotec) 13.8 and 10.9 embryos were obtained per one superovulation. Non-surgical embryo transfer was performed in 1321 recipients over the last two years and a half. In 1984 the conception rate was 52.4%, in 1985 the average survival increased to 58.33% and in the first half of 1986 it reached 65.5%.
D000818:Animals; D002417:Cattle; D004624:Embryo Transfer / Q000379:methods / Q000662:veterinary*; D005260:Female; D005640:Follicle Stimulating Hormone / Q000008:administration & dosage; D007987:Gonadotropin-Releasing Hormone / Q000008:administration & dosage; D006064:Gonadotropins, Equine / Q000008:administration & dosage; D011247:Pregnancy; D013480:Superovulation / Q000187:drug effects
D006064:Gonadotropins, Equine; D007987:Gonadotropin-Releasing Hormone; D005640:Follicle Stimulating Hormone
Výsledky aplikace nechirurgického transferu embryí u skotu v chovatelské praxi.