عملکرد، خصوصیات لاشه و پاسخ‌های ایمنی در جوجه‌های گوشتی تغذیه شده

Subject Areas : Camel

م. طغیانی ¹ (Department of Animal Science, Khorasgan Branch, Islamic Azad University, Isfahan, Iran /Young Researchers and EliteClub,KhorasganBranch,Is lamicAzadUniversity,Isfahan,Iran)
ع.ع. قیصری ² (Isfahan Agricultural and Natural Resources Research Center, Isfahan, Iran)
س.ع. تبعیدیان ³ (Department of Animal Science, Khorasgan Branch, Islamic Azad University, Isfahan, Iran)
غ.ر. قلمکاری ⁴ (Department of Animal Science, Khorasgan Branch, Islamic Azad University, Isfahan, Iran)
م. زمانی زاد ⁵ (Department of Animal Science, Khorasgan Branch, Islamic Azad University, Isfahan, Iran)
م. محمدرضایی ⁶ (Young Researchers and Elite Club, Khorasgan Branch, Islamic Azad University, Isfahan, Iran)

Received: 2013-03-03 Accepted : 2013-07-01 Published : 2014-03-01

Keywords: عملکرد, جوجه گوشتی, تغذیه وعده‌ای, تغذیه ترتیبی, تغذیه مرطوب,

Abstract :

تحقیق حاضر به‌ منظور ارزیابی تأثیر تغذیه ترتیبی یا مرطوب بعد از اعمال تغذیه وعده‌ای در سنین اولیه بر عملکرد، خصوصیات لاشه و پاسخ‌های ایمنی همورال جوجه‌های گوشتی انجام شد. از تعداد 192 قطعه جوجه گوشتی سویه راس 308 در سن 7 روزگی در 4 تیمار و 4 تکرار و 12 قطعه جوجه در هر تکرار در قالب یک طرح کاملا تصادفی استفاده شد. تیمارهای آزمایش شامل: گروه کنترل (C) که جوجه‌ها به ‌صورت آزادانه در طول دوره آزمایش به آب و غذا دسترسی داشتند، گروه تغذیه وعده‌ای سپس جیره کنترل (MFC)، گروه تغذیه وعده‌ای سپس جیره مرطوب (MFW) و گروه تغذیه وعده‌ای و سپس تغذیه ترتیبی (MFS). در تغذیه وعده‌ای که از سن 7 تا 14 روزگی اعمال گردید جوجه‌ها 3 مرتبه در 24 ساعت به‌ مدت 2 ساعت به غذا دسترسی داشتند. در تمامی تیمارها آزمایش در سن 7 روزگی شروع و تا 42 روزگی خاتمه یافت. نتایج نشان داد که در دوره اعمال تغذیه وعده‌ای به ‌طور معنی‌داری مصرف خوراک کاهش و ضریب تبدیل غذایی افزایش یافت که منجر به کاهش وزن در سن 14 روزگی گردید ولی در سن 42 روزگی جبران شد (05/0P<). بالاترین وزن بدن در جوجه‌ها در تیمار MFW مشاهده شد و کمترین وزن بدن، مصرف خوراک و ضریب تیدیل غذایی در تیمار MFS مشاهده شد (05/0P<). بیشترین درصد وزن روده کوچک و کمترین درصد حفره شکمی در در تیمار MFS مشاهده شد (05/0P<). تیتر آنتی‌بادی تولیدی علیه ویروس نیوکاسل و آنفولانزا و گلبول قرمز گوسفندی تحت تأثیر تیمارهای آزمایش قرار نگرفت. نتایج حاصل از این آزمایش نشان داد تغذیه مرطوب پس از اعمال تغذیه وعده‌ای می‌تواند به‌ طور مؤثری عملکرد جوجه‌های گوشتی را تحت تأثیر قرار دهد.

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