نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد،گروه علوم دامی، دانشکده کشاورزی، دانشگاه جیرفت، کرمان، ایران.

2 دانشیار تغذیه طیور گروه علوم دامی دانشگاه جیرفت، تخصص: تغذیه طیور

3 دانشیار،گروه علوم دامی، دانشکده کشاورزی، دانشگاه جیرفت، کرمان، ایران

4 دانشیار گروه علوم دامی دانشگاه جیرفت، تخصص: تغذیه طیور 2- گروه مهندسی طبیعت، مجتمع آموزش عالی شیروان. شیروان، ایران

چکیده

این آزمایش به منظور بررسی تاثیر پودر میوه عناب و سنجد بر عملکرد رشد، متابولیتهای خونی و کیفیت گوشت جوجه‌های گوشتی در شرایط دمایی بالا روی 160 قطعه جوجه گوشتی نر یک روزه سویه راس 308 در قالب طرح کاملاً تصادفی با 4 تیمار و 4 تکرار و تعداد 10 پرنده در هر تکرار انجام شد. تیمارهای آزمایشی عبارت بود از 1- شاهد (جیره پایه)، 2- جیره پایه + 0/75 درصد پودر میوه عناب، 3- جیره پایه + 0/75 درصد پودر میوه سنجد و 4- جیره پایه + ترکیب پودر میوه عناب و سنجد (هر کدام 0/75 درصد). در 25 روزگی با شروع تنش گرمایی، جوجه‌ها روزانه هشت ساعت از ساعت نه تا 17 در دمای 2±34 درجه ‏سانتی‏گراد قرار گرفتند. نتایج نشان داد که اثر تیمارها بر صفات عملکردی معنی‌دار نبود (P<0.05). همچنین وزن نسبی لاشه و اندام‌های داخلی به جز کبد، تحت تاثیر تیمارهای آزمایشی قرار نگرفت (P<0.05). کمترین وزن نسبی کبد در گروه شاهد مشاهده گردید (P≤0.05). افزودن پودر میوه عناب و سنجد سبب افزایش معنی دار میزان گلوتاتیون پراکسیداز و کاهش غلظت گلوکز خون در مقایسه با گروه شاهد شد(P≤0.05). بیشترین ظرفیت نگهداری آب و کمترین افت پخت و خونابه در جوجه های گوشتی تغذیه شده با عناب و سنجد بدست آمد. با توجه به نتایج حاصل از این آزمایش، افزودن عناب و سنجد در سطح 0/75 درصد جیره در شرایط تنش گرمایی هر چند که بر صفات عملکردی جوجه‌های گوشتی موثر نبود، اما منجر به بهبود متابولیت‌های خونی و صفات کیفی گوشت گردید.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of Zizyphus jujube and Elaeagnus angustifolia powder on growth performance, blood metabolites and meat quality of broiler chickens under high temperature conditions

نویسندگان [English]

  • Fatemeh Basiriyan 1
  • Omidali Esmaeilipour 2
  • Mozhgan Mazhari 3
  • Nemat Ziaei 4

1 Department of Animal Sciences, Faculty of Agriculture, University of Jiroft, Kerman, Iran.

2 Associate Professor of poultry nutrition/Animal Science Department, University of Jiroft

3 Department of Animal Sciences, Faculty of Agriculture, University of Jiroft, Kerman, Iran

4 1- Department of Animal Sciences, Faculty of Agriculture, University of Jiroft, Kerman, Iran. 2- Department of Plant Production, Higher Education Complex of Shirvan, Shirvan, Iran

چکیده [English]

This experiment was performed to investigate the effects of Ziziphus jujube and Elaeagnus angustifolia powder on growth performance, blood
metabolites and meat quality of broiler chickens at high temperature conditions. In this experiment, 160 one-day-old male broiler chickens of Ross
308 were used in a completely randomized design with 4 treatments and 4 replicates of 10 birds per each. Experimental treatments were including: 1-
control (basal diet), 2- basal diet + 0.75% Ziziphus jujube, 3- basal diet + 0.75% Elaeagnus angustifolia powder, and 4- basal diet + combination of
Ziziphus jujube and Elaeagnus angustifolia powder (0.75% of each). At day 25 of age, with the onset of heat stress, the chicks were exposed to 34±2 °
C for eight hours daily from 9 a.m. to 5 p.m. The results showed that the effect of treatments on growth performance traits was not significant
(P≥0.05). Also, the relative weight of carcasses and internal organs except liver were not affected by experimental treatments. The lowest relative liver
weight was observed in the control group (P≤0.05). The addition of Ziziphus jujube and Elaeagnus angustifolia in the diet significantly increased
glutathione peroxidase and decreased blood glucose compared to the control group (P≤0.05). The highest amount of water holding capacity and
lowest dripping loss and cooking loss were observed in birds fed Ziziphus jujube mill and Elaeagnus angustifolia (P≤0.05). Based on the results of the
current experiment, although the inclusion of 0.75% of Ziziphus jujube and Elaeagnus angustifolia had no effect on growth performance of broiler
chicken, but improved blood metabolites and meat quality traits.

کلیدواژه‌ها [English]

  • Dripping loss
  • broiler chicken
  • Zizyphus jujube
  • Elaeagnus AngustifLia
  • glutathione peroxidase
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