عملکرد، وضعیت سلامتی و میزان آغوز میش‪های دوقلوزای افشاری و رشد و زنده‪مانی بره‪‪های آن تحت تأثیر افزایش پروتئین قابل متابولیسم جیره در اواخر آبستنی قرار نمی‪گیرد

Subject Areas : Camel

س.س.  موسوی ¹ (Department of Animal Science, University of Zanjan, Zanjan, Iran)
ح.  امانلو ² (Department of Animal Science, University of Zanjan, Zanjan, Iran)
ع.  نیکخواه ³ (Department of Animal Science, University of Tehran, Karaj, Iran)
ح.ر.  میرزایی الموتی ⁴ (Department of Animal Science, University of Zanjan, Zanjan, Iran)
ع.م.  تهرانی ⁵ (Department of Nutrition and Physiology, Animal Science Research Institute, Karaj Iran)

Received: 2015-07-11 Accepted : 2015-09-30 Published : 2016-06-01

Keywords: تغذیه, گوسفند, آبستنی, عملکرد بره, پروتئین قابل متابولیسم,

Abstract :

هدف از این مطالعه، بررسی اثر دو سطح پروتئین قابل متابولیسم (MP) جیره غذایی در اواخر آبستنی بر عملکرد و وضعیت سلامتی میش‪های افشاری و زنده‪مانی و رشد بره‪ها بود. از 6 هفته قبل از زایش، 32 رأس میش افشاری به طور تصادفی به دو تیمار غذایی اختصاص یافتند، که حاوی غلظت پروتئین قابل متابولیسم کم (LMP) یا زیاد (HMP) بودند. میش‪ها به طور انفرادی در LMP (16 رأس) و در HMP (16 رأس) به صورت ایزوکالریک (39/2 مگاکالری در کیلوگرم ماده خشک) تغذیه شدند که به ترتیب شامل 4/99 و 5/116 گرم پروتئین خام (CP) و 5/70 گرم و 6/84 گرم پروتئین قابل متابولیسم در کیلوگرم ماده خشک (DM) بود غلظتMP  جیره غذایی در اواخر آبستنی، بر تغییرات وزن بدن و نمره وضعیت بدنی میش‪ها و همچنین بر غلظت گلوکز، پروتئین کل، اسیدهای چرب آزاد غیر استریفیه (NEFA)، بتا هیدروکسی بوتیرات (bHBA)، انسولین، حساسیت به انسولین و تعداد کل گلبول‪های سفید خون (WBC)، گلبول‪های قرمز خون (RBC) و سایر سلول‪های خون تأثیر نداشت. همینطور، مقدار و ترکیب آغوز به دست آمده در 24 ساعت اول پس از زایمان با سطحMP  تغییر نیافت در نتیجه افزایش غلظت MP جیره غذایی بیشتر از نیاز استاندارد در 6 هفته قبل از زایش هیچ سودی برای میش‪های دوقلوزا و بره‪های آنها از لحاظ عملکرد تولید و شاخص‪های سلامت نداشت.

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