tailieunhanh - Báo cáo khoa học: "No Peri- and Postnatal Effects on Calves Born After Transfer of in Vitro Produced Embryos Vitrified by the Open Pulled Straw (OPS) Method"

Tuyển tập các báo cáo nghiên cứu về bệnh thú y được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành thú y đề tài: No Peri- and Postnatal Effects on Calves Born After Transfer of in Vitro Produced Embryos Vitrified by the Open Pulled Straw (OPS) Method. | Acta vet. scand. 2003 44 87-95. No Peri- and Postnatal Effects on Calves Born After Transfer of in Vitro Produced Embryos Vitrified by the Open Pulled Straw OPS Method By H. Jacobsen1 P Holm1 M. Schmidt3 B. Avery3 T. Greve3 and H. Callesen1 Institute of Food Safety and Nutrition Danish Veterinary and Food Administration Morkhoj 2Department of Animal Breeding and Genetics Danish Institute of Agricultural Sciences Tjele and 3Department of Clinical Studies The Royal Veterinary and Agricultural University Frederiksberg Denmark. Jacobsen H Holm P Schmidt M Avery B Greve T Callesen H No peri- and postnatal effects on calves born after transfer of in vitro produced embryos vitrified by the open pulled straw OPS method. Acta vet. scand. 2003 44 87-95. - The general objective of this study was to perform follow-up studies including selected peri- and postnatal characteristics on calves born after transfer of in vitro produced IVP embryos vitrified by the Open Pulled Straw OPS method. An overall pregnancy rate of 16 after transfer of the OPS-vitrified IVP embryos was achieved and resulted in birth of 9 calves with 11 AI calves serving as controls. There were no immediate or longterm effects on these calves with respect to birth weight gestation length perinatal mortality growth rate disease susceptibility and reproductive performance. IVP calves OPS vitrification long-term studies disease susceptibility growth rates reproductive status. Introduction In vitro produced IVP bovine embryos are more sensitive to chilling cryopreservation and warming than their in vivo counterparts Leibo Loskutoff 1993 Wurth et al. 1994 . One possible explanation for this difference could be a higher content of intracellular lipid concentration and a different zona pellucida in IVP embryos Leibo Loskutoff 1993 . Culture medium containing serum probably contributes to a higher lipid concentration Gardner et al. 1994 Pollard Leibo 1994 Shamsuddin Rodriguez-Martinez 1994 Van Soom et al. 1996 Thompson

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