اثر ذرات نانو هیدروکسی آپاتیت بر انجماد اسپرم قوچ

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش آموخته کارشناسی ارشد گروه علوم دامی، دانشکده علوم کشاورزی، دانشگاه گیلان

2 دانشیار گروه علوم دامی، دانشکده علوم کشاورزی، دانشگاه گیلان

چکیده

این مطالعه به منظور بررسی اثر حفاظتی ذرات نانو هیدروکسی ­آپاتیت بر اسپرم طی انجماد با استفاده از پنج راس قوچ انجام شد. انزال­ها (30=n) به صورت سه روز یک بار در شش نوبت جمع­آوری ­شد. در هر نوبت، انزال­ها تجمیع و به 12 قسمت مساوی تقسیم شدند. مقدار 01/0، 02/0، 05/0 یا 1/0 درصد هیدروکسی ­آپاتیت و 3، 5 یا 7 درصد گلیسرول به هر بخش اضافه شد. نمونه­ها منجمد شده و برای دو هفته ذخیره شدند. سپس تعداد دو پایوت از هر تکرار (جمعاً 144 پایوت)، یخ­گشایی شد و به مدت شش ساعت در 37 درجه سلسیوس نگهداری شدند. میزان تحرک، زنده­مانی، سلامت غشای اسپرم و سلامت آکروزوم طی ساعات صفر، 3 و 6 پس از یخ­گشایی مورد ارزیابی قرار گرفت. نتایج نشان داد که اثر متقابل ذرات نانو هیدروکسی ­آپاتیت، گلیسرول و زمان بر فراسنجه­های اندازه­گیری شده معنی­دار نبود (05/0<p ). زنده­مانی اسپرم و سلامت آکروزوم تحت تاثیر سطوح مختلف ذرات نانو هیدروکسی ­آپاتیت قرار نگرفت (05/0<p ). تحرک کل و پیش­رونده اسپرم در سطح 01/0 (به ­ترتیب 8/21 و 8/17% ) و 1/0% (به ­ترتیب 5/21 و 7/17%) ذرات نانو هیدروکسی ­آپاتیت تفاوتی نشان نداد (05/0<p ). بیشترین تحرک کل (8/24%) و پیش­رونده (0/21%) در سطح  02/0 درصد ذرات نانو هیدروکسی ­آپاتیت مشاهده شد (05/0>p ). سلامت غشا در سطح 02/0 ذرات نانو هیدروکسی ­آپاتیت (7/52%) بیشتر از سایر سطوح بود (05/0>p ). بنابراین افزودن 02/0 درصد ذرات نانو هیدروکسی ­آپاتیت به رقیق­کننده منی قوچ سبب بهبود کیفیت اسپرم در روند انجماد می­شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of nano-hydroxyapatite on freezing ram spermatozoa

نویسندگان [English]

  • F. Besharati 1
  • M. Roostaei-Ali Mehr 2
1 MSc. Graduated, Department of Animal Science, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
2 Associate Professor, Department of Animal Science, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
چکیده [English]

This experiment was designed to evaluate the protective effect of nano-hydroxyapatite against freezing damages on spermatozoa using five rams. Ejaculates (N=30) were collected with three-day intervals between sessions for six times. Ejaculates were pooled and split into 12 parts at each session. The amount of 0.01, 0.02, 0.05 or 0.1% nano-hydroxyapatite and 3, 5 or 7% glycerol were added. Samples were frozen and stored for two weeks. After that two straws from each treatment for each replication (totally 144 straws) were thawed and incubated at 37 ° C for 6 h. Sperm motility, viability, membrane integrity and acrosome integrity were evaluated at 0, 3 and 6 h after thawing. Results showed that there was no interaction between nano-hydroxyapatite, glycerol and incubation time (p < /em>>0.05). Sperm viability and acrosome integrity were not affected by different levels of nano-hydroxyapatite particles (p < /em>>0.05). There was no difference between the level of 0.01 and 0.1% nano-hydroxyapatite particles on the total (21.8 and 21.5%, respectively) and progressive sperm motility (17.8 and 17.7 %, respectively; p < /em>>0.05). Total and progressive sperm motility was the highest (24.8 and 21.0%, respectively) in the level of 0.02% nano-hydroxyapatite particles (p < /em><0.05). Membrane integrity was higher in the level of 0.02% nano-hydroxyapatite particles (52.7%) than other levels (p < /em><0.05). Therefore, the addition of 0.02% nano-hydroxyapatite particles to the ram semen extender improved the quality of frozen spermatozoa.

کلیدواژه‌ها [English]

  • Spermatozoa
  • Freezing
  • Ram
  • Nano-hydroxyapatite particles
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