نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، گروه علوم دامی، دانشکده کشاورزی، دانشگاه لرستان

2 دانشگاه لرستان، تخصص: تغذیه و مدیریت طیور

3 گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان

4 دانشیار گروه علوم دامی، دانشکده کشاورزی، دانشگاه لرستان

5 دانشکده دامپزشکی، دانشگاه شهید چمران

چکیده

به‌منظور بررسی تأثیر افزودن مکمل اکسید روی (عنصر روی در پنج سطح صفر، 40، 80، 120، 160 میلی­گرم در کیلوگرم جیره) و ویتامین E (آلفا توکوفرول استات در دو سطح صفر و 40 واحد بین­المللی در کیلوگرم جیره) بر باروری، جوجه‌درآوری بلدرچین‌های ژاپنی مادر و عملکرد رشد و پاسخ ایمنی نتاج آن‌ها، آزمایشی در قالب طرح فاکتوریل 5×2، بر پایه بلوک­های کامل تصادفی با 10 تیمار و چهار تکرار و 24 قطعه پرنده مولد (16 قطعه ماده و هشت قطعه نر) در هر تکرار انجام شد. افزودن مکمل عنصر روی و ویتامین E به جیره به طور معنی‌داری (05/0P≤) باعث بهبود جوجه‌درآوری شد، مکمل ویتامین E درصد باروری را افزایش داد (05/0P≤)، و مرگ­و­میر جنینی در مرحله دوم (10 تا 16 روزگی) بر اثر افزودن مکمل عنصر روی به طور معنی‌داری کاهش یافت (05/0P≤). ضریب تبدیل غذایی نتاج در دوره پرورش (1 تا 21 روزگی) بر اثر افزودن مکمل عنصر روی بهبود یافت و مکمل ویتامین  Eباعث بهبود ضریب تبدیل غذایی در هفته نخست پرورش نتاج آنها شد (05/0P≤). پاسخ تست ایمنی علیه تزریق SRBC در نتاج به طور معنی­داری (05/0P≤) به وسیله افزودن مکمل عنصر روی و ویتامین E افزایش یافت و مکمل عنصر روی باعث افزایش معنی­داری در میزان عنصر روی استخوان درشت نی نتاج در سن یک روزگی شد (05/0P≤). نتایج این آزمایش نشان­ داد افزودن مکمل عنصر روی و ویتامین E به جیره بلدرچین­های مادر ژاپنی می­تواند باعث بهبود جوجه درآوری و عملکرد رشد و ایمنی در جوجه­ها شود.

کلیدواژه‌ها

عنوان مقاله [English]

Effects of supplementary zinc and vitamin E on fertility and hatchability of breeder Japanese quails and offspring growth performance and immune response

چکیده [English]

This study was conducted to investigate the effect of dietary supplemented with zinc oxide (0, 40, 80, 120 and 160 mg /kg of diet) and vitamin E (Vit E; α-tocopherol acetate; 0 and 40 IU/kg of diet) on fertility and hatchability of Japanese quails, and growth performance and immune response of their progenies. A total of 960 Japanese quails (Coturnix coturnix japonica) 70 d of age were housed in cages and randomly allocated to 10 treatments with 4 replicates of 24 birds in each (sixteen females and eight males). Dietary supplemented zinc and Vit E significantly increased hatchability (P≤0.05). There was a significant effect of Vit E on breeder quails fertility, while zinc supplementation was reduced embryonic mortality at the second stage (10-16 day) (P≤0.05). Supplemental zinc significantly improved feed conversion ratio of offspring in the first three weeks of age, while added Vit E improved feed conversion ratio only in the first week of offspring growth (P≤0.05). Dietary supplementation of Japanese quail’s ration with zinc and Vit E increased immune response of offspring, and enriched Zn content of tibia bone of offspring increased with zinc supplementation. In conclusion, supplementing breeder Japanese quails ration with zinc and Vit E improved hatchability and growth performance and immune response of offspring.

کلیدواژه‌ها [English]

  • hatchability
  • immune response
  • offspring
  • quail
  • vitamin E
  • Zinc

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