تأثیر استفاده از سیدر و تعداد تزریق FSH بر میزان تخمک‌ریزی در گوسفند کرمانی در فصل غیرتولیدمثلی

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسنده

استادیار، گروه علوم کشاورزی، دانشگاه فنی و حرفه‌ای، تهران، ایران.

چکیده

در این تحقیق، تأثیر تعداد روز تزریق هورمون تحریک‌کننده فولیکولی ([1]FSH) همراه با هورمون پروژسترون بر تخمک‌ریزی در فصل غیرتولیدمثلی (زمستان) در اطراف منطقه کرمان مطالعه شد. برای این منظور از تعداد 160 رأس گوسفند کرمانی با وزن مناسب که تقریباً 60 روز از زایمان آن‌‌ها سپری شده و سنی بین 5 تا 7 سال داشتند، انتخاب شد و براساس سن و وزن به چهار گروه مساوی تقسیم شدند. همه گروه‌‌ها به غیر از گروه شاهد، به مدت 12 روز با سیدر تحت پروژسترون درمانی قرار گرفتند. پس از خروج سیدر به گروه اول هورمون FSH به میزان 25 میلی‌گرم در یک روز، گروه دوم 25 میلی‌گرم در روز اول و 10 میلی‌گرم در روز دوم، گروه سوم 25 میلی‌گرم در روز اول و 10 میلی‌گرم در روز دوم و 5 میلی‌گرم در روز سوم تزریق شد. پنج روز پس از آن، میش‌‌ها کشتارگاه شدند و تعداد جسم زرد آن‌‌ها در سطح تخمدان بررسی شد. نتایج نشان داد تعداد روز‌‌های تزریق هورمون FSH تفاوت معنی‌داری روی تعداد تخمک آزاد شده دارد (P <0/05). به صورتی که تزریق FSH در سه روز متوالی، بیشترین تأثیر را در بلوغ تخمک و میزان آزادسازی تخمک در گوسفند کرمانی داشت.
 
[1] Follicle-stimulating hormone

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The Effect of CIDR and the Number of FSH Injections on the Ovulation of Kermani Sheep in Non-Breeding Season

نویسنده [English]

  • Vahid Bahrampour
Assistant Professor, Department of Agricultural Science, Technical and Vocational University (TVU), Tehran, Iran.
چکیده [English]

In this study, the effect of the number of follicle-stimulating hormone (FSH) injections with progesterone on ovulation in the non-reproductive season (winter) was studied in Kerman region, Iran. For this purpose, 160 Kermani sheep were selected with the same average weight 60 days after delivery and ranged in age from 5 to 7 years. They were divided into 4 groups according to age and weight; all groups except for the control treatment were treated with progesterone for 12 days via CIDR. After CIDR withdrawal, the first group was injected with 25 mg FSH on one day while the second group received 25 mg on the first day and 10 mg on the second day. The third group was injected with 25 mg FSH on the first day, 10 mg on the second day and 5 mg on the third day. After five days, the ewes were slaughtered and the number of corpus luteum on the ovaries was counted. The results showed that the number of days of FSH injection had a significant difference in the ovulation rate (P <0/05). The results of this study suggest that the injections of FSH on three consecutive days had the greatest impact on oocyte maturation and ovulation rate.

کلیدواژه‌ها [English]

  • Ovulation
  • CIDR
  • Kermani sheep
  • FSH
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