کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10927618 1092879 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of four different permitting and combination of two best cryoprotectants on freezing Nguni sperm evaluated with the aid of computer aided sperm analysis
ترجمه فارسی عنوان
مقایسه چهار نوع مجوز و ترکیبی از دو بهترین محافظان ضد انفجار در انجماد اسپرم نگونی با استفاده از تجزیه و تحلیل اسپرم کامپیوتری
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی
Cryopreservation has been reported to damage approximately 40-50% of viable sperm in bull semen. The present study was undertaken to assess the cryo-effectiveness of glycerol (GLY), ethylene glycol (EG), dimethyl sulfoxide (DMSO) and propylene glycol (PND) as cryoprotectant during the cryopreservation of Nguni bull semen. Semen was collected from 18 Nguni bulls and evaluated macroscopically and microscopically for sperm parameters. Thereafter, the semen samples were diluted with egg-yolk citrate extender supplemented with either 12% GLY or DMSO or EG or PND cryoprotectant. Semen samples were loaded into straws and placed into a controlled rate programmable freezer and stored in a liquid nitrogen tank. Following semen thawing, artificial insemination (AI) was done on synchronized Nguni cows. The in vitro fertilization (IVF) was conducted on cow's oocytes to test the fertilizing ability. Data was analyzed with the aid of ANOVA. A significant difference (p < 0.05) was recorded between fresh total sperm motility rate (94.7 ± 2.6%) and frozen-thawed sperm total motility rate with GLY (77.8 ± 11.0%), EG (20.4 ± 10.1%), DMSO (15.7 ± 11.9%) and PND (11.2 ± 11.3%). Interestingly, a positive correlation between total sperm motility and pregnancy rate (r = 0.42) was recorded. However, a negative correlation of Nguni sperm parameters with IVF (r = −0.53) was obtained. The freezing-thawing process did reduce the Nguni sperm total sperm motility percentage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryobiology - Volume 72, Issue 3, June 2016, Pages 232-238
نویسندگان
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