تأثیر مخلوط اسانس گیاهان دارویی سیر و آویشن بعد از دوره محدودیت غذایی بر عملکرد، سرعت رشد و جمعیت میکروبی جوجه های گوشتی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه علوم طیور دانشکده کشاورزی دانشگاع تربیت مدرس

2 گروه علوم طیور دانشکده کشاورزی دانشگاه تربیت مدرس

3 دانشیار گروه غلوم طیور، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران

چکیده

این مطالعه به  سرعت، منظور بررسی اثر مخلوط اسانس گیاهان دارویی سیر و آویشن بعد از اعمال محدودیت غذایی بر عملکرد رشد و جمعیت میکروبی ایلئوم جوجه قطعه جوجه ۳۳۶  های گوشتی با استفاده از تعداد گوشتی یک  در ۳۰۸  روزه سویه راس قالب طرح کاملاً تصادفی به . قطعه پرنده در هر تکرار انجام گرفت ۱۴ ) با شش تیمار، چهار تکرار و ۲×۳(  روش فاکتوریل  درصد محدودیت) و سه نوع افزودنی محرک رشد (بدون ۱۰ فاکتورها شامل دو سطح محدودیت غذایی (بدون محدودیت و افزودنی، آنتی روزگی به ۱۸  بیوتیک و مخلوط اسانسهای سیر و آویشن) بودند. نتایج نشان داد وزن بدن طور معنی داری تحت P ۰/۰۵( تأثیر محدودیت غذایی کاهش یافت <.) محدودیت غذایی، افزودنی های خوراکی و اثر متقابل آن ها تأثیری بر شاخصهای عملکردی نداشت. افزودن مخلوط اسانسها باعث کاهش معنا P ۰/۰۵(  دار تلفات گردید <.) سرعت رشد نسبی تحت تأثیر محدودیت غذایی وآثار متقابل محدودیت غذایی و افزودنیها به P ۰/۰۵(  طور معنیداری بالاتر بود <.) تیمار های آزمایشی نتوانستند هزینه خوراک برای تولید یک کیلوگرم وزن زنده را تحت تأثیر قرار دهند. جمعیت اشریشیا کلای و کل باکتری های P ۰/۰۵(  روزگی تحت تأثیر محدودیت غذایی کاهش یافت ۱۸ هوازی ایلئوم در <.) افزودن مخلوط اسانسها اثر معناداری بر کاهش جمعیت اشریشیاکلای و کل باکتری P ۰/۰۵(  های هوازی و افزایش جمعیت باکتریهای اسیدلاکتیک داشت <.) با توجه به  استفاده از مخلوط اسانس گیاهان دارویی سیر و آویشن در تغذیه جوجه ، نتایج حاصل های مواجه با محدودیت غذایی می تواند سرعت رشد جبرانی را افزایش دهد. استفاده از مخلوط اسانسهای سیر و آویشن در این پرندگان، تلفات را به طور چشم گیری کاهش، و جمعیت میکروبی ایلئوم را بهبود می بخشد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Garlic and Thyme’s essential oils blend as a feed additive after feed restriction on the Performance, Growth Rate, Mortality rate and Microbial Population of broile Chickens

نویسندگان [English]

  • Razieh Valipourian 1
  • farid shariatmadari 2
  • Mihammad Amir Karimi Torshizi 3
1 Poultry Science Dept , College of Agriculture, Tarbiat Modares University
2 Poultry Science Department, Agriculural College, Tarbiat Modares University
3 {pi;ytu Science Department, Agricultural College, Tarbiat Modares University
چکیده [English]

This study was conducted to evaluate the effects of garlic and thyme’s medicinal plants essential oils blend as a feed additive following feed restriction on growth performance, relative growth rate and ileal microbial population of broiler chickens. This study was conducted using 336 one-day old chickens (Ross 308) as a factorial experiment (2×3) in a completely randomized design in six treatments with four replications and 14 birds per each replicate . The factors included two levels of feed restriction (without feed restriction and %10 feed restrictions) and three types of growth promoter additives (none-additive, blend of essential oils and antibiotic). The results showed that the body weight in 18 days of age was significantly affected by feed restriction (P <0.05). Feed restriction, feed additive and interaction between them did not affect the performance parameters.  The addition of EO resulted in significant reduction in mortality rate (P <0.05). Feed costs for one kg of body weight were not affected by experimental treatments. Under the feed restriction, the population of E. coli and the total aerobic bacteria in ileum significantly reduced at 18 days of age (P <0.05). At 42 days of age, the addition of EO resulted in a significant reduction in E.coli, total aerobic bacteria count and increasing Lactobacillus counts (P <0.05). As a general conclusion, use of EO in feeding chicks faced with feed restriction could significantly increase the compensatory growth and might reduce the mortality and improve the ileal microbial population as well.

کلیدواژه‌ها [English]

  • Broilers Chicken
  • Feed restriction
  • Garlic
  • Ileum Microflora
  • performance
  • Thyme
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