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تأثیر جیرههای گلوکوژنیک مکمل شده با اسیدهای چرب غیراشباع متفاوت بر عملکرد تولیدمثلی در میش | ||
تولیدات دامی | ||
مقاله 18، دوره 18، شماره 1، فروردین 1395، صفحه 191-200 اصل مقاله (696.81 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/jap.2016.54630 | ||
نویسندگان | ||
حامد کرمانی موخر1؛ آرمین توحیدی* 2؛ سعید زین الدینی2؛ حمید کهرام3 | ||
1دکتری گروه علوم دامی، دانشکدۀ علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران | ||
2دانشیار گروه علوم دامی، دانشکدۀ علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران | ||
3استادیار گروه علوم دامی، دانشکدۀ علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران | ||
چکیده | ||
هدف از تحقیق حاضر، ارزیابی اثر جیرههای گلوکوژنیک مکملشده با اسیدهای چرب غیراشباع متفاوت بر فراسنجههای تولیدمثلی میش نژاد ایرانبلک در دو برنامۀ مدیریتی بود. میشها در دو گروه الف (75 رأس) و ب (25 رأس) قرار گرفتند. میشهای گروه الف در روزهای 80 و 90 بعد زایش به ترتیب قطع شیر و قوچاندازی شدند. 40 روز قبل از قوچاندازی زیر پوست گوش میشها ایمپلنت ملاتونین قرار داده شد. 75 میش گروه الف در سه گروه 25تایی جدا نگهداری و به ترتیب از جیرههای گلوکوژنیک مکملشده با چربی اشباع (جیرۀ شاهد)، دانۀ کتان اکسترودشده (جیرۀ امگا 3)، یا دانۀ سویای برشتهشده (جیرۀ امگا 6) تغذیه شدند. میشهای گروه ب به ترتیب در روزهای 120 و 180 قطع شیر و قوچاندازی شده و از جیرۀ گروه شاهد تغذیه شدند (بهعنوان گروه مدیریت سنتی). نرخ فحلی، تخمکریزی، برهزایی، و چندقلوزایی در تیمارهای گوناگون آزمایش شمارش و ثبت شد. وزن برهها در زمان زایش، سه، و چهارماهگی اندازهگیری شد. نرخ برهزایی و چندقلوزایی در تیمارهای امگا 3 و امگا 6 بهصورت معنیداری بیشتر از تیمار شاهد و گروه ب بود. میانگین وزن بره در سه و چهارماهگی در گروه ب بهطور معنیداری بیشتر از همۀ تیمارهای گروه الف بود. بنابراین استفاده از برنامۀ مدیریتی گروه الف همراه با تغذیۀ اسیدهای چرب امگا 3 و امگا 6 میتواند سبب بهبود عملکرد فراسنجههای تولیدمثلی میشها شود. | ||
کلیدواژهها | ||
اسید چرب؛ عملکرد تولیدمثلی؛ قطع شیر؛ گوسفند؛ ملاتونین | ||
عنوان مقاله [English] | ||
The effect of glycogenic diets complemented with different poly unsaturated fatty acids on reproductive performance in ewe | ||
نویسندگان [English] | ||
Hamed Kermani Moakhar1؛ Armin Towhidi2؛ Saeed Zeinoldini2؛ Hamid Kohram3 | ||
1Ph.D., Department of Animal Science, Faculty of Agricultural Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran | ||
2Associate Professor, Department of Animal Science, Faculty of Agricultural Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran | ||
3Assistant Professor, Department of Animal Science, Faculty of Agricultural Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran | ||
چکیده [English] | ||
The aim of this study was to evaluate the effect of glycogenic diets supplemented with different poly unsaturated fatty acids on reproductive performance of Iran Black ewes in two different managing programs. Ewes were allocated in two different groups; group A (n = 75) and group B (n = 25). Ewes from group A were stopped from suckling followed by introducing to the rams on days 80 and 90, respectively. Melatonin implant was laid under the skins ear of these ewes 40 days before introducing them to the rams. Animals from group A were divided into three groups (25 ewes/sub-group) and were fed by high starch diets supplemented with saturated fatty acids (control diet), extruded linseed (omega 3 diet), and full fat soybean (omega 6 diet). Ewes from group B were stopped from suckling on day 120, introduced to the rams on day 180 after parturition and fed as described for the control diet. Data for the rates of Estrus cycle, ovulation, lambing and twining were recorded for each group. The weight of lambs was measured at the birth time of birth, and also at 3 and 4 months of age. The lambing and twining rates were higher in omega 3 and omega 6 diets as compared with the control diet and group B. Animals in group B indicated a higher lamb weight at 3 and 4 months of age compared to all treatments in group A. In conclusion, data from current study suggested that using management program of group A along with feeding omega 3 and 6 could improve the reproductive performance of Iran Black ewes. | ||
کلیدواژهها [English] | ||
cutting milk, Fatty acid, melatonin, sheep, reproductive performance | ||
مراجع | ||
1. خالدری م (1382) کتاب اصول پرورش گوسفند و بز. انتشارات جهاد دانشگاهی تهران، صص. 87-34.
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