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تأثیر ال-آرژنین بر رشد، رودۀ کوچک و سامانۀ ایمنی در جوجه‌‌های گوشتی در دورۀ آغازین پرورش

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشیار دانشکدة دامپزشکی دانشگاه تهران

2 استادیار دانشکدة کشاورزی دانشگاه تبریز، تبریز

3 استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

4 استادیار دانشگاه علوم کشاورزی و منابع طبیعی ساری

5 استادیار مؤسسۀ تحقیقات سرم و واکسن رازی، کرج

6 دانشیار دانشکدۀ بهداشت دانشگاه علوم پزشکی تهران

چکیده

هدف از این پژوهش بررسی تأثیر سطوح بالای اسید آمینۀ ال-آرژنین در دورة آغازین پرورش بر عملکرد رشد، ریخت‌شناسی روده و سامانۀ ایمنی در جوجة مرغ‌های گوشتی سویة راس بود. در این پژوهش 192 قطعه جوجه‌مرغ گوشتی 1‌روزه سویة راس در قالب طرح کاملا تصادفی با چهار جیرة غذایی تغذیه شدند که هر جیرة غذایی شامل چهار تکرار و هر تکرار برای دوازده قطعه جوجه بود. جیره‌های غذایی دارای 100 درصد، 153 درصد، 168 درصد و 183 درصد آرژنین قابل هضم بر اساس توصیۀ برنامۀ پرورش راس بودند و از یک تا 10‌روزگی تغذیه شدند. در روز دهم پژوهش، جوجه‌ها وزن‌کشی شده و مصرف خوراک آن‌ها اندازه‌گیری شد. سپس سه جوجه از هر تکرار برای بررسی بافت روده و سامانة ایمنی کشتار شدند. نتایج نشان داد که سطوح بالای آرژنین غذایی تأثیر معنادار افزاینده (01/0 P<) بر وزن 10‌روز‌گی، بازده خوراک، شاخصه‌های سامانة ایمنی، وزن و طول رودة کوچک و طول پرز‌ها و عمق کریپت‌های آن داشت. بر اساس نتایج این پژوهش، مصرف 168 درصد آرژنین قابل هضم بر اساس توصیة برنامة پرورش راس، بهترین نتیجه را در بهبود رشد جوجه‌های گوشتی داشت و همچنین بهبود ویژگی‌های طولی و وزنی و بافت‌‌شناسی بافت رودة کوچک و صفات ایمنی را به همراه داشت.

کلیدواژه‌ها


عنوان مقاله [English]

The effects of L-arginine on growth, small intestine, and immune system of broilers in starter period

نویسندگان [English]

  • Masoud Adibmoradi 1
  • Marziyeh Ebrahimi 2
  • Ahmad Zare Shahneh 3
  • Mahmoud Shivazad 3
  • Zarbakht Ansari Pirsaraei 4
  • Majid Tebianian 5
  • Keramat Nourijelyani 6
1 Associate professor at Faculty of Veterinary Medicine, University of Tehran
2 Assistant professor at Faculty of Agricultural Science, University of Tabriz-Tabriz
3 Professors, University College of Agriculture & Natural Resources, University of Tehran-Karaj
4 Assistant professor at Sari Agricultural Sciences & Natural Resources University
5 Assistant professor at Razi Vaccine and Serum Research Institute-Karaj
6 Associate Professor at School of Public Health, Tehran University of Medical Sciences
چکیده [English]

The objective of the present study was to investigate the effects of high dietary levels of L-arginine during starter period on growth, intestine morphology and immune system of female Ross broiler chicks. In this experiment, 192 day old female Ross broiler chicks were fed with 4 dietary treatments in a completely randomized design, in which each dietary treatment included 4 replications. Dietary treatments included 100%, 153%, 168% and 183% of digestible arginine, based on the Ross recommendation, and were fed from day 1 to 10. On d 10 of the experiment, chicks were weighed and feed consumption was recorded. Then, three chicks per replication were slaughtered in order to survey intestinal histology and immune system. The results showed that high dietary levels of arginine had an increasing effect (P<0.01) on 10th day body weight, feed efficiency, immune system characteristics, weight and length of small intestine, and its villus height and crypt depth. According to the results of this study, 168% digestible arginine, based on the Ross recommendation, had the best desirable results on growth improvement of broiler chicks and it also improved weight, length and histology of small intestine, and immune characteristics.
 

کلیدواژه‌ها [English]

  • arginine
  • growth performance
  • Morphology of Small Intestine
  • Immune system
  • broiler chick
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