تأثیر سطوح مختلف انرژی قابل سوخت‌وساز و پروتئین خام جیره بر عملکرد و سوخت‌وساز نیتروژن و انرژی در دوره رشد بلدرچین ژاپنی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد تغذیه طیور، پردیس ابوریحانٰ، دانشگاه تهران

2 استاد دانشگاه تهران

3 استاد دانشگاه تربیت مدرس

4 دانشجوی دکتری دانشگاه تبریز

چکیده

به‌منظور مطالعه اثر سطوح مختلف انرژی قابل سوخت‌و‌ساز و پروتئین خام جیره بر عملکرد و قابل سوخت‌و‌ساز نیتروژن و انرژی در دوره رشد بلدرچین ژاپنی، از تعداد 360 قطعه بلدرچین ژاپنی یک‌روزه در یک آزمایش فاکتوریل 3×3 با سه سطح انرژی قابل سوخت‌وساز (2750، 2850 و 2950 کیلوکالری در کیلوگرم) و سه سطح پروتئین خام (24، 26 و 28 درصد) در قالب طرح کاملاً تصادفی با چهار تکرار و 10 پرنده در هر تکرار استفاده شد. مقدار مصرف خوراک و افزایش وزن به‌طور هفتگی اندازه‌گیری و ضریب تبدیل محاسبه شد. میزان مصرف، دفع و ابقاء نیتروژن به‌صورت گرم به ازای هر پرنده در روز، درصدی از مصرف نیتروژن و گرم/کیلوکالری/انرژی قابل سوخت‌و‌ساز مصرفی و مقدار انرژی قابل سوخت‌و‌ساز ظاهری جیره در دوره سنی 26 تا 28 روزگی اندازه‌گیری شد. نتایج این آزمایش نشان داد پرندگانی که جیره حاوی 2850 کیلوکالری در کیلوگرم انرژی قابل سوخت‌وساز و 26 درصد پروتئین خام دریافت نمودند به‌طور معنی‌داری (05/0>P) افزایش وزن روزانه و میزان ابقاء نیتروژن به ازای هر واحد انرژی قابل سوخت‌و‌ساز مصرفی بالاتر و ضریب تبدیل بهتری داشتند. بر اساس نتایج این آزمایش به نظر می‌رسد که بهترین سرعت رشد، بیشترین میزان ابقاء نیتروژن و بهترین بازده مصرف خوراک در بلدرچینهای ژاپنی در حال رشد با تغذیه جیرههای حاوی 2850 کیلوکالری در کیلوگرم انرژی قابل سوخت‌وساز و 26 درصد پروتئین خام حاصل می‌شود لذا میتوان این سطح از انرژی و پروتئین را به‌عنوان احتیاجات انرژی قابل سوخت‌و‌ساز و پروتئین جیره رشد بلدرچین ژاپنی توصیه نمود.

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of Different Levels of Dietary Metabolizable Energy and Crude Protein on Performance and Nitrogen and Energy Metabolism in Japanese quail (Coturnix coturnix japonica)

نویسنده [English]

  • mohamad yazarloo 1
چکیده [English]

In order to study the impact of different levels of dietary metabolizable energy and crude protein on performance and nitrogen and energy metabolism of Japanese quail during growth period, 360 day-old Japanese quails were used in a 3×3 factorial experiment with three levels of metabolizable energy (2750, 2850 and 2950 Kcal/kg) and three levels of crude protein (24, 26 and 28 percent) in a completely randomized design with four replicates and 10 birds in each replicate. The feed intake and body weight gain were measured weekly and feed conversion ratio was calculated. The nitrogen intake, excretion and retention as gram per bird per day, percent of nitrogen intake and gram nitrogen per kilocalorie per metabolizable energy consumed and dietary apparent metabolizable energy content were measured during 26 to 28 days of age period. The results of this study showed that birds fed diet containing 2850 kcal/kg metabolizable energy and 26 percent crude protein had significantly (P< 0.05) higher daily weight gain and higher nitrogen retention per each unit of metabolizable energy consumed and better feed conversion ratio. According to the results of this experiment, it seems that the best growth rate, the maximum nitrogen retention and the best feed efficiency of growing Japanese quail are achieved by feeding diets containing 2850 kcal/kg metabolizable energy and 26 percent crude protein. Therefore, these values can be recommended as metabolizable energy and crude protein requirements of Japanese quail growing diet.

کلیدواژه‌ها [English]

  • crude protein
  • Japanese quail
  • Metabolizable energy
  • Nitrogen Retention
  • performance
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