بررسی عملکرد و پاسخ ایمنی جوجه‌های گوشتی تغذیه شده با جیره‌های حاوی مکمل اسید بوتیریک و ال-کارنیتین

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد علوم دامی، گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه ایلام

2 استادیار گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه ایلام، ایلام

چکیده

اثر ال‌ـ‌کارنیتین و اسیدبوتیریک بر عملکرد تولیدی و پاسخ ایمنی با استفاده از 192 قطعه جوجۀ گوشتی راس 308 در یک آزمایش فاکتوریل 2×3 با سه سطح ال‌ـ‌کارنیتین (صفر، 125 و 250 میلی‏گرم در کیلوگرم) و دو سطح اسیدبوتیریک (صفر و 2 گرم در کیلوگرم) بر پایۀ طرح بلوک‏های کامل تصادفی با شش تیمار، چهار بلوک و هشت جوجه در هر تکرار بررسی شد. جوجه‏های تغذیه‌شده با جیره‏های حاوی افزودنی (ال‌ـ‌کارنیتین و اسیدبوتیریک) ازنظر خوراک مصرفی، افزایش وزن و ضریب تبدیل تفاوت معنی‏داری با گروه شاهد نداشتند. درصد لنفوسیت در خون پرندگانی که با جیره‏های حاوی ال‌ـ‌کارنیتین، اسیدبوتیریک و یا هر دو ترکیب تغذیه شدند، بالاتر بود (05/0P<). تیتر IgG اولیه (31روزگی) در پاسخ به گلبول قرمز گوسفند در جوجه‏های تغذیه‌شده با جیرۀ حاوی 125 میلی‏گرم بر کیلوگرم ال‌ـ‌کارنیتین در مقایسه با جیرۀ تیمار شاهد بالاتر بود (05/0P<). شاخص تورم پردۀ پا پس از تزریق فیتوهماگلوتینین در جوجه‏های دریافت‏کنندۀ جیره‏های دارای 250 میلی‏گرم بر کیلوگرم ال‌ـ‌کارنیتین و 125 و 250 میلی‏گرم بر کیلوگرم ال‌ـ‌کارنیتین همراه با اسیدبوتیریک در مقایسه با جوجه‏های گروه شاهد پایین‏تر بود (05/0< P). نتایج تحقیق حاضر نشان داد افزودن 125 میلی‏گرم ال‌ـ‌کارنیتین و دو گرم اسیدبوتیریک در کیلوگرم جیره، بدون تأثیری بر عملکرد جوجه‏های گوشتی، باعث بهبود پاسخ ایمنی در آنها می‏شود.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of performance and immune response of broiler chickens fed diet containing butyric acid and L-carnitine supplement

نویسندگان [English]

  • Zahra Norreh 1
  • Ali Khatibjoo 2
  • Farshid Fattahnia 2
  • Mohammad Akbari-Gharaei 2
1 M.Sc. Student, Department of Animal Science, Faculty of Agriculture, University of Ilam, Iran
2 Assistant Professors, Department of Animal Science, Faculty of Agriculture, University of Ilam, Iran
چکیده [English]

Effect of L-carnitine and butyric acid on the performance and immune responses of 192 broiler chickens (Ross 308) was investigated with three levels of L-carnitine (zero, 125 and 250 mg/kg) and two levels of butyric acid (2 g/kg) in a 2×3 factorial arrangement based on randomized complete block design with 6 dietary treatments, four replicates and eight birds per each. Broilers fed basal diet plus feed additives (L-carnitine and butyric acid) did not have significant differences on feed intake, body weight gain and feed conversion ratio when compred to control group. Broilers fed diets containing additives had higher blood lymphocyte count than control diet fed birds (P<0.05). Primary IgG tiitter (31d) against SRBC in broilers fed diet containing 125 mg/kg L-carnitine was higher than that of the control birds (P<0.05). Skin thickness in response to PHA in broielrs fed diet containing 250 mg/kg L-carnitine alone and 125 and 250 mg/kg L-carnitine in combination with butyric acid was lower than that of control group (P<0.05). It was concluded that addition of 125 mg/kg L-carnitine and two g/kg butyric acid did not influenced broiler chicken performance while improved their immune response.

کلیدواژه‌ها [English]

  • butyric acid
  • Broiler Chicken
  • Immunity
  • l-carnitine
  • performance
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