نوع مقاله : مقاله پژوهشی

نویسندگان

1 مرکز تحقیقات کشاورزی تهران - تخصص: تغذیه/ مدیریت پرورش

2 هیئت علمی دانشگاه علوم کشاورزی و منابع طبیعی ساری

3 موسسه تحقیقات علوم دامی، تخصص: تغذیه طیور

4 گروه علوم دامی دانشگاه کشاورزی ساری

چکیده

به‌منظور تعیین اثر منابع مختلف عناصر منگنز، روی و مس (سولفات، آلی خارجی و آلی داخلی) و سطوح (100 و 50 درصد نیاز) بر عملکرد و پاسخ ایمنی، آزمایشی با استفاده از 480 قطعه جوجه گوشتی سویه کاب 500، در قالب طرح کاملاً تصادفی به‌روش فاکتوریل 2×3 انجام شد. وزن زنده و خوراک مصرفی به‌صورت هفتگی اندازه‌گیری و ضریب تبدیل محاسبه شد. در پایان دوره، خون‌گیری از جوجه‌ها انجام و عیار تولید پادتن علیه گلبول قرمز گوسفندی، پاسخ به ویروس بیماری نیوکاسل و شمارش تفریقی گلبول‌های سفید اندازه‌گیری شد. نتایج نشان داد نوع منبع مواد معدنی تأثیری بر عملکرد رشد جوجه گوشتی نداشت. اثر نوع مکمل معدنیمنگنز، روی و مس بر درصد ماندگاری معنی‌دار بود (05/0 P<) و تیمارهای نوع آلی داخلی و خارجی بیشترین ماندگاری را داشتند. نوع آلی داخلی منگنز، روی و مس سبب پاسخ بیشتری به تیتر آنتی‌بادی علیه گلبول قرمز گوسفند شد (05/0 P<). علاوه بر این سطح 100 درصد نیاز این عناصر سبب افزایش وزن زنده (05/0 P<)، شاخص کارایی (05/0 P<) و بهبود ضریب تبدیل (05/0 P<) شد. پرندگان تغذیه‌شده به مقدار 50 درصد نیاز مکمل معدنی واکنش بیشتری به عیار پادتن علیه گلبول قرمز گوسفند نشان دادند (05/0 P<). براساس نتایج این تحقیق، شکل آلی سه عنصر منگنز، روی و مس تولیدشده در ایران، می‌تواند به‌صورت همزمان احتیاجات جوجه‌های گوشتی به این عناصر را تأمین نموده و جایگزین شکل سولفات و آلی خارجی شود. علاوه بر این، سطح 100 درصد نیاز عناصر منگنز، روی و مس، بدون در نظر گرفتن منبع، برای عملکرد رشد و سطح 50 درصد نیاز برای عملکرد بهتر سیستم ایمنی توصیه می‌شوند.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of different forms of manganese, zinc and copper on performance, carcass characteristics and immune response broilers

نویسندگان [English]

  • mehrdad nafisi 1
  • Mansour Rezaei 2
  • sayed abdoullah hosseini 3
  • mohamad kazemifard 4

1 institute

2 university

3 Animal Sceince Reaserch Institute

4 university

چکیده [English]

In order to determine effect of various sources of manganese, zinc and copper (Sulfate, foreign and Internal organic) and requirement levels (100, 50% requirement) on performance and immune response of broilers, an expriment was conducted using 480 commercial CAB 500 hybrid broilers in a 2×3 factorial arrangement with completely randomized design. During the experiment, live body weight (LBW), feed intake (FI) and feed conversion ratio (FCR) were measured. At the end of the experiment, blood sampling was done and total antibody titer against sheep's red blood cell (SRBC), antibody titer against Newcastle Disease virus (ND) and differential count of white blood cells (WBC) were measured. The results showed that mineral sources did not affect the performance of broilers. The sources of minerals had a significant effect on livability percentage (P<0.05) and the highest livability was observed for organic (foreign and local) treatments. Usage of local organic manganese, zinc and copper caused a better response to sheep's red blood cell (SRBC) (P<0.05) relative to foreign form. Moreover, there was significant difference among the treatments in terms of weight (P<0.05), feed conversion (P<0.05) and production index (P<0.05) and treatment with 100% requirement level had maximum impact. The birds fed with 50 % requirement showed a better response to SRBC (P<0.05). According to the results of this experiment, the organic forms of the three manganese, zinc and copper produced in Iran can simultaneously, meet the needs of broilers and can be replaced with inorganic and the foreign sources. In addition, the 100 % requirement level of manganese, zinc and copper, regardless of source, is recommended to achieve the maximum growth performance and 50 % requirement level is recommended for better immune function.

کلیدواژه‌ها [English]

  • broiler
  • immune response
  • Inorganic mineral
  • Organic mineral
  • performance
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