X.M. Song, S.S. Lu, M. Wang, Q.Y. Li, D. Li, X.G. Yang, Y.Q. Lu, M. Zhang, K.H. Lu,
Addition of Glutathione to Semen Extender During Sperm Sorting can Improve in vitro Embryonic Development and in vivo Fertility
in Buffalo,
Journal of Animal and Veterinary Advances,
Volume 11,Issue 23,
2012,
Pages 4482-4488,
ISSN 1680-5593,
javaa.2012.4482.4488,
(https://makhillpublications.co/view-article.php?doi=javaa.2012.4482.4488)
Abstract: This study evaluated the effects of Glutathione (GSH) supplemented
in the semen extender during the buffalo sperm sorting process on sperm quality,
embryonic development after IVF and pregnancy rate after AI. The percentage
of sperm motility, plasma membrane integrity and DNA fragmentation were detected
by flow cytometry or by microscopy in stained, sorted and frozen semen treated
with or without 0.75 mM GSH during the flow sorting procedure. The cleavage
and blastocyst rates were examined at day 2 and 6-8 after IVF with frozen semen
treated with or without 0.75 mM GSH. Pregnancy diagnosis was determined by transrectal
palpation at 90 day after AI with frozen semen treated with or without 0.75
mM GSH. The percentage of sperm with Progressive Motility (MP, %) was significantly
higher (p<0.05) in sorted semen supplemented with 0.75 mM GSH than that in
the control. The percentages of moribund, dead and Phosphatidylserine (PS) translocated
sperm detected by flow cytometry were significantly decreased (p<0.05) in
frozen semen supplemented with GSH compared to the control. Higher blastocyst
and pregnancy rates (p<0.05) were found after IVF and AI with frozen sperm
treated with 0.75 mM GSH than that in the control group. In conclusion, addition
of 0.75 mM GSH to the semen extenders (stained, sorted and frozen) during the
sperm sorting process can improve sperm quality in vitro embryonic development
and in vivo fertility after AI thus indicating potential for commercial
application in buffalo sperm sorting.
Keywords: Reduced glutathione;sperm quality;embryonic development;pregnancy rate;sorted semen;buffalo