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