تأثیر منبع چربی و نوع افزودنی بر عملکرد، صفات تولیدی و ریخت شناسی روده جوجه های گوشتی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری تخصصی، گروه پرورش و مدیریت طیور، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس، تهران، ایران

2 استاد گروه پرورش و مدیریت طیور، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس، تهران، ایران

3 استادیار، گروه پرورش و مدیریت طیور، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس، تهران، ایران

4 استادیار پژوهشی، بخش تغذیه و فیزیولوژی، مؤسسۀ تحقیقات علوم دامی کشور، کرج، ایران

چکیده

تأثیر منبع چربی و نوع افزودنی ‌بر عملکرد و شاخص‌های ریخت‏شناسی رودۀ جوجه‌های گوشتی آمیختۀ تجاری آرین در آزمایش فاکتوریال 3×2 با دو منبع چربی (کلزا و تخم‏کدو) و سه نوع افزودنی (بدون افزودنی، 1/0 گرم در کیلوگرم باکتوسل، و 15/0 گرم در کیلوگرم ویرجینامایسین) در قالب طرح کاملاً تصادفی با شش تیمار و چهار تکرار و 20 قطعه جوجه در هر تکرار به‌مدت 42 روز بررسی شد. اثر منبع چربی، افزودنی‌ها و نیز تأثیرات متقابل منبع چربی×افزودنی بر عملکرد معنی‏دار نبود. پروبیوتیک موجب کاهش عمق کریپت و افزایش نسبت ارتفاع پرز به عمق کریپت در ژوژنوم و ایلئوم شد (01/0P<). استفادۀ توأم روغن تخم‏کدو و پروبیوتیک موجب افزایش ارتفاع پرز و نسبت ارتفاع پرز به عمق کریپت در ژوژنوم و ایلئوم شد (05/0P<). عمق کریپت، ضخامت، و مساحت پرز در دئودنوم جوجه‏های تغذیه‌شده با روغن تخم‏کدو بیشتر بود (05/0P<). بنابراین، می‌توان از پروبیوتیک باکتوسل در جیره‌های حاوی چربی‌های دستۀ لینولئیک‌ـ‌الئیک (روغن تخم‏کدو) و لینولنیک (روغن کلزا) بدون تأثیر منفی بر عملکرد و صفات تولیدی استفاده کرد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of fat source and additive type on performance, productive traits and gut morphology of broiler chickens

نویسندگان [English]

  • Daryush Khademi Shurmasti 1
  • Farid Shariatmadari 2
  • Mohammad Amir Karimi Torshizi 3
  • Houshang Lotfollahian 4
1 Ph.D. Candidate, Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
2 Professor, Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
3 Assistant Professor, Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
4 Assistant Research Professor, Section of Nutrition and Physiology, Animal Research Institute, Karaj, Iran
چکیده [English]

The present study was carried out to evaluate the effects of vegetable fat sources and additives on performance and morphological parameters of the small intestine of Arain broiler chickens. Birds were randomly used in a 2×3 factorial arrangement of dietary treatments included two fat sources (canola or pumpkin seed) and three additives (without additive, 0.1 g/kg probiotic and 0.15 g/kg virginamycin) with four pen replicates and 20 birds per each. The growth performance and productive traits, with using of neither additives nor fat sources or fat sources × additives were unaffected. However, probiotic was significantly decreased crypt depth and increased villi height to crypt depth ratio in jejunum and ileum (P<0.01). Likewise, the highest of villi height and villi height to crypt depth ratio in jejunum and ileum especially was obtained with combination of pumpkin seed oil and probiotic (P<0.05). Crypt depth, villi thickness and surface area was higher in duodenum of broilers were fed with pumpkin seed oil (P<0.05).Thus, probiotic bactocell can be used in diets contain linoleic-oleic (pumpkin seed oil) and linolenic (canola oil) fat groups without negative effect on performance and productive traits.

کلیدواژه‌ها [English]

  • Antibiotic
  • broiler
  • intestine morphology
  • Probiotic
  • vegetable fat
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