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- J Vet Sci. 2009 Jun;10(3):249-255 DOI: 10.4142/jvs.2009.10.3.249 |
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A comparative study of Sephadex, glass wool and Percoll separation
techniques on sperm quality and IVF results for cryopreserved bovine semen
Hae-Lee Lee, Sue-Hee Kim, Dong-Beom Ji, Yong-Jun Kim* |
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Laboratory of Veterinary Obstetrics and Theriogenology, College of Veterinary Medicine, Chonbuk National University, Jeonju 561-756, Korea
* yjk@chonbuk.ac.kr |
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The aim of this study was to compare the effects of
spermatozoa separation techniques on sperm quality and
in-vitro fertilization (IVF) results for cryopreserved bovine
semen. Sephadex, glass wool and Percoll gradient separation
techniques were used for sperm separation and sperm
motility, morphology and membrane integrity were evaluated
before and after separation. Also, cleavage and blastocyst
developmental rate were investigated after IVF with sperm
recovered by each separation technique. The motility of
samples obtained by the three separation techniques were
greater compared to the control samples (p £¼ 0.05). The
percentage of spermatozoa with intact plasma-membrane
integrity, identified by 6-carboxyfluoresceindiacetate/
propidium iodide fluorescent staining and the hypo-osmotic
swelling test, was highest in the glass wool filtration
samples (p £¼ 0.05). The cleavage and blastocyst rate of
total oocytes produced from glass wool filtration samples
were also higher than the control and Sephadex filtration
samples (p £¼ 0.05), but were not significantly different
from Percoll separation samples. However, a significantly
greater number of cleaved embryos produced by glass
wool filtration developed to blastocyst stage than those
produced by Percoll separation (p £¼ 0.05). These results
indicate that spermatozoa with good quality can be
achieved by these three separation techniques and can be
used for bovine IVF. In particular, it suggests that glass
wool filtration would be the most effective method of the
three for improving sperm quality and embryo production
for cryopreserved bovine spermatozoa.
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