اثر سطوح مختلف عصاره یونجه بر عملکرد و برخی متابولیت های خونی جوجه های گوشتی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه علوم دامی، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند، ایران

2 سازمان جهاد کشاورزی استان خراسان جنوبی، بیرجند، ایران

چکیده

پژوهشی به منظور بررسی اثر سطوح مختلف عصاره یونجه بر عملکرد رشد، خصوصیات دستگاه گوارش و برخی ویژگی­ های خونی در جوجه ­های گوشتی انجام شد. تعداد 200 قطعه جوجه گوشتی نر سویه راس 308 در 5 تیمار آزمایشی با 4 تکرار و 10 پرنده در هر تکرار در یک طرح آزمایشی کاملا تصادفی مورد استفاده قرار گرفت. عصاره یونجه در چهار سطح (0، 2، 4، 8 و 12 درصد) استفاده شد. نتایج نشان داد عصاره یونجه بر میانگین افزایش وزن روزانه، میانگین مصرف خوراک روزانه، ضریب تبدیل خوراک و شاخص کارایی اروپایی اثر منفی نداشت. افزودن عصاره یونجه (4، 8 و 12 درصد) به جیره وزن نسبی بورس و طحال را به طور معنی­ داری افزایش داد اما موجب کاهش معنی­ دار غلظت تری­ گلیسرید سرم خون گردید (0/05>P). افزایش سطوح عصاره یونجه (8 و 12 درصد) سبب کاهش معنی ­دار چرب بطنی گردید (0/05>P). هم ­چنین، غلظت کلسترول تام در جوجه های تغذیه شده با جیره حاوی 12 درصد عصاره یونجه کاهش یافت (0/05>P). وزن و طول نسبی دوازدهه، ژژنوم و ایلئوم، وزن نسبی تیموس، چینه دان، سنگدان، پیش معده و هم­ چنین غلظت گلوکز سرم خون تحت تاثیر تیمارهای آزمایشی قرار نگرفت. نتایج این پژوهش نشان داد که عصاره یونجه می ­تواند بدون اثر منفی بر عملکرد جوجه ­های گوشتی، ذخیره چربی حفره بطنی را کاهش دهد و موجب تقویت سامانه ایمنی گردد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of different levels of polysavone (alfalfa extract) on growth performance and some blood metabolites of broilers

نویسندگان [English]

  • Seyed Mohammad Hosseini 1
  • Rouhollah Nourmohammadi 2
1 Department of Animal Science, Faculty of Agriculture, Birjand University, Birjand, Iran
2 Agricultural Jihad Organization of South Khorasan Province, Birjand, Iran
چکیده [English]

An experiment was conducted to investigate the effect of different levels of alfalfa extract (polysavone), a natural extract of alfalfa, on growth performance, gut characteristics, and some blood parameters in broiler chickens. A total of 200 one-day-old Ross 308 male broiler chicks were assigned to 5 experimental treatments, with 4 replications and 10 birds in each replication with a completely randomized design. The polysavone was used in 4 levels (0, 2, 4, 8, and 12% of feed). The results showed that polysavone had no adverse effects on the average daily gain, average daily feed intake, and European Broiler Index. The addition of polysavone (4, 8, and 12%) to the diet significantly increased relative weight of bursa and spleen but decreased triglycerides concentration in serum (P<0.05). Increasing of dietary polysavone levels (8 and 12%) caused a significantly decrease in abdominal fat (P<0.05). Also, total cholesterol concentration was reduced (P<0.05) in broilers fed on diet with 12% polysavone. Relative weights and lengths of duodenum, jejunum, and ileum, relative weights of thymus, crop, gizzard, and proventriculus, as well as serum glucose concentration were not affected by experimental treatments. The results of this research indicated that polysavone may decrease abdominal fat deposition and enhance immunity without showing an adverse effect on the performance of broiler chicken.

کلیدواژه‌ها [English]

  • Alfalfa extract
  • Broiler
  • Immune system
  • Performance
  • Total cholesterol

مراجع

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فصلنامه محیط زیست جانوری
دوره 13، شماره 4
دی 1400
صفحه 115-120

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