اثر جیره نویسی بر اساس نسبت‏های مختلف اسیدهای آمینه ایده‏آل بر سیستم ایمنی، فراسنجه های خونی و اجزای لاشه جوجه‏ های گوشتی در دوره پایانی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار دانشگاه آزاد اسلامی، واحد مشهد، گروه علوم دامی، مشهد، ایران

2 استاد گروه علوم دامی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

3 دانشیار گروه علوم دامی، واحد ورامین و پیشوا، دانشگاه آزاد اسلامی، ورامین، ایران

4 دانشیار گروه علوم دامی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

5 استادیار گروه علوم دامی ، واحد مشهد، دانشگاه آزاد اسلامی، مشهد، ایران

چکیده

در این تحقیق، اثر الگوهای مختلف اسید ­آمینه ایده‏آل بر پاسخ سیستم ایمنی، فراسنجه‏های خونی و لاشه جوجه‏های گوشتی آرین در دوره پایانی (42-29 روزگی) در دو جنس نر و ماده، بررسی شد. آزمایش به صورت فاکتوریل 2×7 در قالب طرح کاملاً تصادفی با 840 قطعه جوجه گوشتی نر و ماده آرین در 14 تیمار، چهار تکرار و تعداد 15 جوجه در هر تکرار انجام گرفت. تیمارها شامل ترکیب الگوهای اسید آمینه ایده‏آل و توصیه‏های آرین (IICP, CVB, Feedstuff, NRC, ROSS, RPANوArian) و جنس (نر و ماده) می‌باشد. در 35 روزگی به دو قطعه جوجه از هر واحد آزمایشی تزریق آنتی­ژن انجام شد و در 42 روزگی تیتر پادتن تعیین گردید. در انتهای آزمایش، از هر واحد آزمایشی دو قطعه جوجه خون­گیری و کشتار شدند و مقادیر پروتئین تام، آلبومین، نیتروژن اوره‏ای، کراتینین، اسید اوریک و وزن تیموس، طحال و بورس فابریسیوس و اجزای لاشه مورد اندازه‏گیری قرار گرفت. الگوهای NRC (199/2) و RPAN (172/2) بیشترین عیار پادتن را تولید کردند (05/0 P<). اثر الگوهایاسیدهای ­آمینه ایده‏آل بر مقادیر اسید اوریک (542/8) و نیتروژن اوره‏ای (850/1) معنی‏دار بود (05/0 P<). وزن نسبی لاشه در الگوی NRC (867/%71) آرین (804/%71)، ROSS (824/%70) و RPAN (091/%71) اختلاف معنی­داری نشان داد (05/0 P<). بررسی نتایج پاسخ سیستم ایمنی، فاکتورهای خونی و خصوصات لاشه نشان داد که پاسخ جوجه‏های گوشتی آرین به نسبت‌های مختلف اسید آمینه، متفاوت است و بهترین نتایج در الگوی RPAN مشاهده شد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of different ideal amino acid ratios on immune response, blood profile and carcass characteristics of broiler chicks during finisher period

نویسندگان [English]

  • E. Salehifar 1
  • M. Shivazad 2
  • F. Foroudi 3
  • M. Chamani 4
  • R. Bahari Kashani 5
1 Assistant Professor, Department of Animal Science, Mashhad Branch, Islamic Azad University, Mashhad, Iran
2 Professor, Department of Animal Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
3 Associatet Professor, Department of Animal Science, Varamin Branch, Islamic Azad University, Varamin, Iran
4 Associate Professor, Department of Animal Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
5 Assistant Professor, Department of Animal Science, Mashhad Branch, Islamic Azad University, Mashhad, Iran
چکیده [English]

An experiment was conducted to determine effect of different ideal amino acid ratios on immune response, blood profile and carcass characteristics of male and female broiler chicks during finisher period (29-42 days). A total of 840 male and female broiler chicks were equally distributed to 14 dietary treatments with four pens per treatment and 15 birds per pen in a factorial arrangement 2×7 in a completely randomized design. Treatments were included different patterns of amino acid ratios and recommendations of Arian broiler (IICP, CVB, Feedstuff, NRC, ROSS, RPAN and Arian) and sex (male and female). In 35 days, injections of antigen were performed in 2 chicks from each pens and antibody titers were determined in 42 days. At the end of the experiment, blood samples were taken from two chickens each pen and then were slaughtered, the values of total protein, albumin, urea nitrogen, creatinine, uric acid, and the weight of the thymus, spleen and bursa of Fabricius and carcass components were measured. NRC (2.199) and RPAN (2.172) produced the highest antibody titer (P<0.05). The effect of different ideal amino acids ratios on the amount of uric acid (8.542) and urea nitrogen (1.850) ideal was significant (P<0.05). The relative weight of carcasses was observed in NRC (71.867%), Arian (71.804%), ROSS (70.824%) and RPAN (71.091%). When comparisons were made among immune response, blood factors and carcass characteristics, the most significant improvements were observed by RPAN ratios in this period.

کلیدواژه‌ها [English]

  • Ideal amino acid pattern
  • Immune response
  • Broiler
  • Carcass characteristics
  • blood parameters
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