Developmental Potential of Vitrified Holstein Cattle Embryos Fertilized In Vitro with Sex-Sorted Sperm
文献类型： 外文期刊
作者： Xu, J 1 ; Guo, Z 2 ; Su, L 2 ; Nedambale, TL; Zhang, J; Schenk, J; Moreno, JF; Dinnyes, A; Ji, W; Tian, XC; Y 1 ;
作者机构： 1.Evergen Biotechnol Inc, Storrs, CT 06269 USA
2.Evergen Biotechnol Inc, Storrs, CT 06269 USA; Minist Agr, Key Lab Anim Biotechnol, Xinjiang Acad Anim Sci, Xinjiang 830000, Peoples R China; Chinese Acad Sci, Kunming Inst Zool, Kunming 650223, Peoples R China; Univ Connecticut, Chinese Acad Sci, Kunming Anim Sci, Storrs, CT 06269 USA; Univ Connecticut, Ctr Regenerat Biol, Dept Anim Sci, Storrs, CT 06269 USA; XY Inc, Ft Collins, CO 80524 USA; Sexing Technol, Navasota, TX 77868 USA; Agr Biotechnol Ctr, Dept Anim Biol, Godollo, Hungary
关键词： sorted sperm;in vitro fertilization;vitrification;embryo transfer
期刊名称：JOURNAL OF DAIRY SCIENCE （ 影响因子：4.034； 五年影响因子：4.354 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： In vitro fertilization (IVF) is a feasible way to utilize sex-sorted sperm to produce offspring of a predetermined sex in the livestock industry. The objective of the present study was to examine the effects of various factors on bovine IVF and to systematically improve the efficiency of IVF production using sex-sorted sperm. Both bulls and sorting contributed to the variability among differential development rates of embryos fertilized by sexed sperm. Increased sorting pressures (275.8 to 344.75 kPa) did not have a significant effect on the in vitro fertility of the sorted sperm; neither did an extended period of 9 to 14 h from semen collection to sorting. As few as 600 sorted sperm were used to fertilize an oocyte, resulting in blastocyst development of 33.2%. Postwarming of vitrified sexed IVF embryos resulted in high morphological survival (96.3%) and hatching (84.4%) rates, similar to those fertilized by nonsexed sperm (93.1 and 80.6%, respectively). A 40.9% pregnancy rate was established following the transfer of 3,627 vitrified, sexed embryos into synchronized recipients. This was not different from the rates with nonsexed IVF (41.9%, n = 481), or in vivo-produced (53.1%, n = 192) embryos. Of 458 calves born, 442 (96.5%) were female and 99.6% appeared normal. These technologies (sperm sexing-IVF-vitrification-em-bryo transfer) provide farmers, as well as the livestock industry, with a valuable option for herd expansion and heifer replacement programs. In summary, calves were produced using embryos fertilized by sex-sorted sperm in vitro and cryopreserved by rapid cooling vitrification.
- 相关文献
