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اثر تغذیه کوتاه مدت جیره پرانرژی و تزریق گونادوتروپین‌های جفتی بر دینامیک فولیکولی، متابولیت‌های خون و عملکرد تولیدمثلی میش‌های نایینی | ||
| علوم دامی | ||
| مقاله 6، دوره 32، شماره 124، آذر 1398، صفحه 77-90 اصل مقاله (1.92 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/asj.2018.122885.1746 | ||
| نویسندگان | ||
| جواد حبیبی زاد1؛ احمد ریاسی* 2؛ حمید کهرام3 | ||
| 1دانش آموخته دکتری تخصصی فیزیولوژی دام، گروه علوم دامی، دانشکده کشاورزی، دانشگاه صنعتی اصفهان، اصفهان - ایران و استادیار گروه علوم دامی، دانشکده کشاورزی، دانشگاه یاسوج، یاسوج - ایران | ||
| 2دانشیار، گروه علوم دامی، دانشکده کشاورزی، دانشگاه صنعتی اصفهان، اصفهان - ایران. | ||
| 3استادیار، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، تهران - ایران. | ||
| چکیده | ||
| در این مطالعه اثر مصرف کوتاه‌مدت جیره حاوی انرژی زیاد و تزریق گنادوتروپین جفت اسب1 (eCG) و گنادوترپین جفت انسان2 (hCG) بر دینامیک فولیکولی، متابولیت‌های خون و پاسخ تولید مثلی میش‌های نائینی بررسی شد. از 45 رأس میش نایینی 3 تا 4 ساله استفاده شد که به سه گروه 15 رأسی تقسیم شدند. تیمارها شامل: 1- جیره نگهداری همراه با تزریق eCG (Me)، 2- جیره کوتاه‌مدت پر انرژی همراه با تزریق eCG (HEe) و 3- جیره کوتاه‌مدت پر انرژی همراه با تزریق eCG و hCG (HEeh). چرخه فحلی تمام میش‌ها با اسفنج حاوی پروژسترون به‌مدت 12 روز در فصل تولیدمثلی، همزمان شد. تغذیه کوتاه مدت جیره پرانرژی به‌مدت 6 روز (از 4 روز قبل گذاشتن اسفنج تا 1 روز پس از برداشتن آن) انجام شد. تزریق eCG یک روز قبل از برداشتن اسفنج و تزریق hCG در روز برداشتن اسفنج و یک روز پس از آن انجام شد. نتایج نشان داد که صرف نظر از نوع هورمون تزریق شده، مصرف کوتاه مدت جیره پرانرژی جمعیت فولیکول‌های متوسط و بزرگ را افزایش (05/0>P) داد. در گروه‌های مصرف کننده جیره پرانرژی غلظت گلوکز، کلسترول و انسولین بیشتر (05/0>P) و غلظت نیتروژن اوره‌ای سرم کمتر (05/0>P) از گروه Me بود. قبل از برداشتن اسفنج، غلظت استرادیول در گروه-های HEe و HEeh کاهش (05/0>P) و پس از آن افزایش (05/0>P) یافت. گروهHEeh بیشترین (05/0>P) نرخ دوقلوزایی (9/42%) را داشت. به‌طور کلی تغذیه کوتاه‌مدت جیره پرانرژی همراه با تزریق گنادوتروپین‌های جفتی موجب افزایش توسعه فولیکولی، تغییر فراسنجه‌های خونی و بهبود عملکرد تولیدمثلی میش‌های نایینی شد. | ||
| کلیدواژه‌ها | ||
| انرژی؛ گونادوتروپین جفتی؛ توسعه فولیکولی؛ نرخ دوقلوزایی؛ میش نایینی | ||
| عنوان مقاله [English] | ||
| Effect of short-term feeding high energy diet and chorionic gonadotropins injection on follicular dynamics, blood metabolites and reproductive performance in Naeini ewes | ||
| نویسندگان [English] | ||
| Javad Habibizad1؛ Ahmad Riasi2؛ Hamid Kohram3 | ||
| 1Assistant Professor, Department of Animal Science, Faculty of Agriculture, Yasouj University, Yasouj, Iran. | ||
| 2Department of Animal Sci., College of Agriculture, Isfahan University of Technology | ||
| 3Department of Animal Sci., College of Agriculture and Natural Resource, Tehran University. | ||
| چکیده [English] | ||
| Effect of short-term feeding high energy diet along with eCG and hCG injection on follicular dynamics, blood metabolites, double ovulation and twinning rates in Naeini ewes was evaluated. For this purpose, 45 Naeini ewes (3-4 years old) were randomly assigned to 3 experimental groups: 1- Maintenance diet + eCG (Me), 2- Short-term high energy diet + eCG (HEe) and 3- Short-term high-energy diet + eCG and hCG (HEeh). All ewes were synchronized by inserting intravaginal progesterone sponges for a period of 12 days during the breeding season. The short-term feeding was started 4 d before until 1 d after sponge removal (for a 6 d period). The eCG injection was done 1 d before sponge removal and hCG injection was done on the day of sponge removal and 1 d later. Results showed that regardless of the kind of hormone injection, feeding high energy diet increased (p < 0.05) the medium and large follicles population. The HEe and HEeh groups had higher (p < 0.05) serum glucose, cholesterol and insulin, but lower (p < 0.05) serum urea nitrogen compared with Me group. In HEe and HEeh groups, (p < 0.05) serum oestradiol decreased before sponge removal and increased (p < 0.05) after that. The HEeh ewes had highest (p < 0.05) twinning rate (42.9%). In general, short-term feeding (6-day) high energy diet along with chorionic gonadotropins injection improved the follicular development, blood parameters and reproductive performance in Naeini ewes. | ||
| کلیدواژه‌ها [English] | ||
| Energy؛ Chorionic gonadotropin؛ Follicular development؛ Twinning rate, Naeini ewes | ||
| مراجع | ||
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