تأثیر مصرف خوراکی کولین محافظت شده و ویتامین E بر تولید شیر، ترکیبات شیر، ماده خشک مصرفی، امتیاز وضعیت بدنی و وزن بدن در گاوهای اوایل دوره شیردهی

Subject Areas : Camel

M. Rahmani ¹ , M. Dehghan-Banadaky ² , R. Kamalyan ³

1 - Department of Animal Science, Faculty of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
2 - Department of Animal Science, Faculty of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
3 - Departmentof Biochemistry, Faculty of Veterinary Medicine, Armenian National Agrarian University, Yerevan, Armenia

Received: 2013-11-25 Accepted : 2014-01-30 Published : 2014-12-01

Keywords: ویتامین E, گاو شیری, تولید شیر, کولین, مصرف خوراک, وزن زنده,

Abstract :

به منظور بررسی اثرات مصرف کولین محافظت شده یا ویتامین E بر تولید شیر، ترکیبات شیر، ماده خشک مصرفی، امتیاز وضعیت بدنی و وزن بدن در گاوهای اوایل دوره شیردهی، تعداد 24 رأس گاو هلشتاین یک شکم‌زا و چند شکم‌زا که در هفته پنجم شیردهی قرار داشتند، به مدت چهار هفته مورد آزمایش قرار گرفتند. گاوها به‌ طور تصادفی به یکی از گروه‌های زیر اختصاص یافتند: I- بدون دریافت مکمل (شاهد) II- دریافت کننده کولین محافظت شده (90 گرم در روز) و III- دریافت کننده ویتامین E (4400 واحد بین المللی در روز). در این مطالعه، مصرف کولین یا ویتامین E بر ماده خشک مصرفی، وزن بدن، امتیاز وضعیت بدنی، تولید شیر، درصد و محصول اجزای تشکیل دهنده شیر به غیر از درصد مواد جامد بدون چربی در گروه کولین، تأثیری نداشت (05/0P>). مصرف کولین محافظت شده سبب افزایش درصد مواد جامد بدون چربی شیر در مقایسه با گروه شاهد و گروه ویتامین E گردید (05/0>P). نتایج این آزمایش نشان داد که مصرف کولین یا ویتامین E در جیره گاوهای اوایل دوره شیردهی تأثیری بر تولید شیر، ترکیبات شیر، ماده خشک مصرفی، وضعیت شرایط بدنی و وزن بدن نداشت.

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