تعیین سطح مطلوب انرژی و پروتئین در جیره رشد بلدرچین ژاپنی (Coturnix coturnix japonica)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناس ارشد گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت‌ـ‌ایران

2 دانشیار گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت‌ـ‌ایران

3 استاد گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس، تهران‌ـ‌ایران

چکیده

به‌منظور تعیین سطح مطلوب انرژی و پروتئین در جیرۀ دورۀ رشد بلدرچین ژاپنی، از تعداد 360 قطعه بلدرچین ژاپنی یک‌روزه در آزمایش فاکتوریل 3 × 3، [سه سطح انرژی سوخت‌و‌سازپذیر (2750، 2850 و 2950 کیلوکالری در کیلوگرم) و سه سطح پروتئین (24، 26 و 28 درصد)] در قالب طرح کاملاً تصادفی با چهار تکرار و 10 پرنده در هر تکرار استفاده شد. مصرف خوراک و افزایش وزن هفتگی اندازه‏گیری، و ضریب تبدیل غذا محاسبه شد. در پایان دوره، از هر واحد آزمایشی چهار قطعه پرنده (از هر دو جنس) انتخاب و پس از خون‏گیری برای بررسی صفات لاشه، کشتار شدند. غلظت سرمی هورمون رشد در نمونه‏های خون اندازه‏گیری شد. افزایش وزن روزانه، ضریب تبدیل، و بازده لاشۀ پرندگان تیماری که جیرۀ حاوی 2850 کیلوکالری در کیلوگرم انرژی سوخت‌و‌سازپذیر و 26 درصد پروتئین دریافت کردند بهتر بود (05/0>P). غلظت سرمی هورمون رشد پرندگان تغذیه‌شده با جیرۀ حاوی 2750 کیلوکالری در کیلوگرم انرژی سوخت‌و‌سازپذیر بیشتر بود (05/0>P). بدین ترتیب جیرۀ حاوی 2850 کیلو‌کالری در کیلوگرم انرژی سوخت‌و‌سازپذیر و 26 درصد پروتئین به‌عنوان جیرۀ رشد بلدرچین توصیه می‏شود.

کلیدواژه‌ها


عنوان مقاله [English]

Determination of optimum levels of energy and protein in grower diet of Japanese quail (Coturnix coturnix Japonica)

نویسندگان [English]

  • Mohammad Yazarloo 1
  • Seyed Davood Sharifi 2
  • Farid Shariatmadari 3
  • Abdolreza Salehi 2
1 M.Sc. Student, Department of Animal and Poultry Science, College of Aburaihan, University of Tehran, Pakdasht, Iran
2 Associate Professor, Department of Animal and Poultry Science, College of Aburaihan, University of Tehran, Pakdasht, Iran
3 Professor, Department of Animal Science, College of Agriculture, Tarbiat Modarres University, Tehran, Iran
چکیده [English]

In order to determine the optimal levels of energy and protein in grower diet of Japanese quail, 360 day
old Japanese quails were used in a 3×3 factorial arrangement of dietary treatments that comprised three
levels of metabolisable energy (2750, 2850, and 2950 Kcal/kg) and three levels of crude protein (24, 26
and 28 percent) with four replicates per treatment in a completely randomized design. Feed intake and
body weight were measured weekly and feed conversion ratio was calculated. At 35 d of age, four birds
(from both sexes) from each replicate were randomly selected and killed following blood sampling to
evaluate carcass traits. The blood samples were assayed for the sera concentrations of growth hormone.
Results indicated that birds fed on diets containing 2850 kcal/kg metabolisable energy and 26 percent
protein had higher daily weight gain and better feed conversion ratio and carcass yield (P<0.05). The sera
concentration of growth hormone was higher in birds fed on diet containing 2750 kcal/kg metabolisable
energy (P<0.05). This study indicated that Japanese quails can grow faster and more efficiently on diet
containing 2850 kcal/kg metabolisable energy and 26 percent protein. Therefore, the diet containing 2850
kcal/kg metabolisable energy and 26 percent protein could be recommended as dietary metabolisable
energy and protein requirements for growing Japanese quails.

کلیدواژه‌ها [English]

  • Energy
  • Growth
  • Japanese quail
  • Protein
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