نوع مقاله : مقاله پژوهشی
نویسنده
استادیار، بخش علوم دامی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان مرکزی (نویسنده مسئول).
چکیده
این تحقیق با هدف ساخت و بررسی کارایی روغن بادام زمینی ید دار شده در پیشگیری از عوارض کمبود ید در گوسفند انجام شد. ابتدا اتیل استر ید دار شده اسیدهای چرب روغن بادام زمینی ساخته شد سپس یک گله گوسفند داشتی با سابقه کمبود ید انتخاب گردید و در این گله، تعداد 30 رأس میش جوان از توده نژاد فراهانی با وزن بدن مشابه (4 ± 42 کیلوگرم) به‌صورت تصادفی به سه گروه شامل شاهد و دو گروه آزمایشی (سه تیمار و 10 تکرار) تقسیم شدند. گروه آزمایشی اول، مقدار 390 میلی گرم ید به شکل اتیل استر اسیدهای چرب روغن بادام زمینی و گروه آزمایشی دوم، همین مقدار ید را از مکمل مشابه خارجی با نام تجارتی دپودین (®Depodine ) در اواخر آبستنی در انتهای فصل زمستان دریافت کردند. مدت زمان اجرای آزمایش سه ماه بود که طی آن غلظت ید معدنی سرم و هورمون‌های تیروئیدی شامل T3، T4 در شروع آزمایش و ماهیانه در گروه‌های آزمایشی اندازه‌گیری و مقایسه شد. هر دو مکمل ید باعث افزایش معنی‌دار غلظت ید معدنی سرم خون در گروه‌های آزمایشی نسبت به گروه شاهد در هر سه ماه نمونه‌برداری شدند ((01/0< P)و هر دو مکمل باعث افزایش تولید و غلظت هورمون‌های T4 و T3 در کل دوره آزمایش نسبت به مقدار پایه و گروه شاهد گردیدند ((01/0< P). نتایج نشان داد که ساخت این هورمون‌ها تحت تأثیر کمبود ید قرار داشته‌اند و مکمل تهیه شده در پیشگیری از عوارض کمبود ید در دام موثر و دارای اثر مشابهی با نمونه خارجی می‌باشد.
کلیدواژه‌ها
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