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Volume 8, Issue 4 (Suppl) J Vet Sci Technol, an open access journal
ISSN: 2157-7579 Veterinary 2017
September 04-05, 2017
September 04-05, 2017 | Paris, France
7th International Veterinary Congress
Transfer of large equine embryos in Arabian mares
Mohamed K. Derbala1 and M S S Abdou2
1Animal Reproduction Research Institute – ARC, Egypt
2Cairo University, Egypt
In the vast majority of equine embryo transfer programs, flushing takes place on days 6, 7 or 8 post ovulation. In the present study,
embryos could, instead, be obtained on days 10-11 after ovulation. For this purpose, 36 Arabian mares (7-24 years old) were used
as donors for embryos and 6 mares were kept as control. Of the 36 donor animals, 2 mares died suddenly and flushing was carried
out after excision of the uterus. Recipient mares (N=70) aged 5-10 years, and were kept in embryo transfer facility. The degree
of synchronization was -4 to -6 days. The procedure used depended on flushing of the donor mares after detection of embryonic
sac using ultrasonography. Large pore AI catheters and external sheath of double guarded uterine swabs were used in the process
of embryo transfer. A controllable manual pipette was used in the control process of loading, washing and transfer. This method
overcame the problem of burst of large embryos. A high recovery (94.4%) and pregnancy (73.5%) rates could be obtained. Results
have also shown that higher pregnancy rate was obtained with recipient mares on day 4 post ovulation, whereas lower pregnancy rates
were found in recipient mares on day 6 post ovulation. In conclusion, this study demonstrated that there was a possibility of embryo
transfer on day 10-11 post ovulation i.e. after embryo detection with ultrasound scanning. This method permits flushing of mare's
uterus after death on 10-11 days of pregnancy for maximum exploitation of the donor mare. Furthermore, concerning mares with a
history of low embryo recovery flushing did not take place until the embryo was detected with ultrasound so as to save flushing media
and number of flushes.
Biography
Mohamed K. Derbala is working at Animal Reproduction Research Institute – ARC, Egypt. His international experience includes participation in various programs,
contributions and participation in different countries for diverse fields of study. His research interests reflect in his wide range of publications in various national and
international journals.
Mohamed K. Derbala et al., J Vet Sci Technol 2017, 8:4(Suppl)
DOI: 10.4172/2157-7579-C1-024