نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری تغذیه طیور، گروه علوم دامی، دانشکده کشاورزی، دانشگاه کردستان
2 عضو هیئت علمی گروه علوم دامی، دانشکده کشاورزی، دانشگاه کردستان
چکیده
این پژوهش با هدف بررسی اثرات گنجاندن کنجاله کاملینا و جایگزینی بخشی از نمک جیره با بیکربنات سدیم بر عملکرد و وقوع آسیت در جوجه‌های گوشتی پرورش یافته در مناطق مرتفع انجام شد. تعداد 672 قطعه جوجه گوشتی نر یک روزه سویه راس 308 در قالب طرح کاملاً تصادفی به 7 تیمار با 6 تکرار 16 قطعه‌ای توزیع شدند. تیمارهای آزمایشی شامل جیره بر پایه ذرت و کنجاله سویا بدون جایگزینی نمک با بیکربنات سدیم (شاهد)، جیره‌های حاوی 5 و 10 درصد کنجاله کاملینا همراه با سطوح جایگزینی 25، 50 و 75 درصد نمک جیره با بیکربنات سدیم بودند. تغذیه جیره‌های آزمایشی عملکرد تولیدی جوجه‌ها را کاهش داد (05/0>P) به طوری‌که، جیره‌های حاوی 10 درصد کنجاله کاملینا با جایگزینی 50 یا 75 درصد بیکربنات سدیم مصرف خوراک و افزایش وزن بدن را در مقایسه با پرندگان تیمار شاهد کاهش و ضریب تبدیل غذایی را افزایش دادند. تأثیر تیمارهای آزمایشی بر درصد لاشه و وزن نسبی سینه، ران و کبد معنی‌دار نبود اما، موجب کاهش وزن نسبی چربی محوطه بطنی، قلب، طحال و بورس فابریسیوس شدند (05/0>P). نسبت وزنی بطن راست به کل بطن و میزان مرگ و میر ناشی از آسیت هنگام مصرف کنجاله کاملینا و جایگزینی بیکربنات سدیم با نمک طعام کاهش یافت (05/0>P). به طور کلی، استفاده از جیره حاوی 5 درصد کنجاله کاملینا و 25 درصد جایگزینی بیکربنات سدیم به جای نمک طعام به دلیل کاهش مرگ و میر ناشی از آسیت بدون اختلال در عملکرد رشد جوجه‌های گوشتی پرورش یافته در مناطق مرتفع توصیه می‌شود.
کلیدواژه‌ها
موضوعات
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