نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد،دانشکده کشاورزی و منابع طبیعی مغان، دانشگاه محقق اردبیلی، اردبیل

2 استادیار،عضو هیات علمی گروه علوم دامی-دانشکده کشاورزی و منابع طبیعی مغان- دانشگاه محقق اردبیلی - تخصص: فیزیولوژی رشد/ فی

3 دانشیار،دانشگاه علوم کشاورزی و منابع طبیعی ساری، تخصص: فیزیولوژی دام

چکیده

هدف از این پژوهش، بررسی آثار تغذیه پودر بره­موم بر عملکرد رشد، اجزای لاشه و فراسنجه­های خونی جوجه­های گوشتی در پاسخ به تنش گرمایی بود. در این آزمایش از تعداد 160 قطعه جوجه گوشتی نر یک روزه (راس 308) در قالب طرح کاملاً تصادفی با چهار تیمار، چهار تکرار و 10 قطعه جوجه در هر تکرار استفاده شد. تیمارهای آزمایشی شامل 1- تیمار شاهد (جیره پایه)؛ 2- جیره حاوی نئومایسین (200 گرم در هر تن)؛ 3- جیره حاوی 150 میلی­گرم بره­موم در هر کیلوگرم جیره؛ 4- جیره حاوی 200 میلی­گرم بره­موم در هر کیلوگرم جیره بودند. جوجه­ها از سن 15 تا 42 روزگی تحت شرایط تنش گرمایی (2°C ± 32 از ساعت 10 صبح الی شش بعد از ظهر) قرار گرفتند. نتایج نشان داد که میزان تلفات در پرندگانی که در جیره خود بره موم دریافت کردند کم‌تر از گروه شاهد بود (0/05>P). در دوره­های مختلف، مصرف خوراک تحت تأثیر تیمارها قرار نگرفت. در دوره­های رشد و پایانی، وزن جوجه­هایی که با جیره حاوی 200 میلی­گرم پودر بره­موم تغذیه شدند بیش‌تر از پرندگان گروه شاهد بود (0/05>P). در دوره پایانی و کل دوره، ضریب تبدیل خوراک در پرندگان تغذیه‌شده با 200 میلی‌گرم پودر بره­موم کم‌تر از گروه شاهد بود (0/05>P). سطح گلوکز و LDL خون در پرندگان تغذیه‌شده با بره­موم کم‌تر از گروه شاهد بود (0/05 >P). بنابراین براساس نتایج حاصل، استفاده از بره موم تا سطح 200 میلی­گرم در هر کیلوگرم جیره می­تواند اثرات منفی تنش گرمایی را در جوجه­های گوشتی کاهش دهد.

کلیدواژه‌ها

عنوان مقاله [English]

The effect of Propolis powder on growth performance, carcass characteristics and blood parameters of broiler chickens in response to heat stress

نویسندگان [English]

  • Michael Gholipour 1
  • Vahid Vahedi 2
  • Zarbakht Ansari Pirsarei 3

1 Department of Animal Science, Moghan College of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil

2 Department of Animal Science, Moghan College of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran

3 Department of Animal Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran

چکیده [English]

This study was conducted to determine the effects of Propolis on growth performance, carcass characteristics and some blood parameters in broiler chickens in response to heat stress condition. A total of 160 one day-old male broiler chicks (Ross 308) were randomly divided into four treatment groups in a completely randomized design with four replicates of 10 birds each. The experimental treatments including: 1) control (basal diet), 2) the basal diet with Neomycin (200 g/ton), 3) 150 mg/kg Propolis, 4) 200 mg/kg Propolis in diet. Birds submitted to heat stress (32±2ºC from 10.00 AM to 6.00 PM) from 15 to 42 d of age. The results showed that, average mortality was lower in Propolis groups than in the control group (p < 0.05). None of the feed intake data was influenced by treatments during different periods. Birds receiving diet supplemented with 200 mg/kg Propolis had a significantly (p < 0.05) higher body weight compared to the control group at the finisher feeding phase and whole period. In the finisher phase and whole period, the lowest (p < 0.05) fed conversion ratio (FCR) was observed in chickens fed 200 mg/kg Propolis. Cholesterol and LDL level were lower in chickens fed diet with Propolis compared to control (p < 0.05). In conclusion, the addition of Propolis at a rate of 200 mg/kg to the diet could reduce the negative effects of heat stress in broiler chickens.
 

کلیدواژه‌ها [English]

  • Bird
  • Blood Glucose
  • feed conversion ratio
  • heat stress
  • propolis
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