اثر استفاده از مکمل اسید آلی در جیره های با سطوح مختلف مواد مغذی بر عملکرد، جمعیت میکروبی ایلئوم و فراسنجه های خونی جوجه های گوشتی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه علوم دامی، دانشکده کشاورزی و منابع طبیعی، دانشگاه گنبد کاووس، گنبد کاووس، ایران

2 گروه تغذیه دام و طیور، دانشکده علوم دامی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران

چکیده

این پژوهش به ­منظور بررسی تاثیر سطوح مختلف مواد مغذی و مکمل اسید آلی (بیوترونیک) بر عملکرد، جمعیت میکروبی ایلئوم و فراسنجه­ های خونی جوجه ­های گوشتی انجام گردید. 300 قطعه جوجه گوشتی سویه کاب 500 (از دو جنس) در قالب طرح کاملاً تصادفی با آرایش فاکتوریل 3×2 در 30 واحد آزمایشی (شش تیمار و پنج تکرار) استفاده شدند. فاکتورها شامل دو سطح مکمل اسید آلی (جیره ­های حاوی 0/1 درصد اسید آلی و جیره های فاقد اسید آلی) و سه سطح مواد مغذی (سطح استاندارد، 2/5 درصد کم تر از سطح استاندارد و پنج درصد کم تر از سطح استاندارد) بودند. اثر متقابل بین اسید آلی و سطوح مختلف مواد مغذی در هیچ کدام از صفات معنی­ دار نبود. مکمل اسید آلی باعث افزایش وزن در صفر تا 21 روزگی شد (0/05>P). بین مقدار افزایش وزن جوجه ­های دریافت کننده سطوح مختلف مواد مغذی تفاوتی مشاهده نشد. مصرف خوراک تحت تاثیر اسید آلی و سطوح مواد مغذی قرار نگرفت. استفاده از اسید آلی باعث بهبود ضریب تبدیل غذایی گردید (0/05>P). اما این صفت تحت تاثیر سطوح مختلف مواد مغذی قرار نگرفت. اسید آلی تعداد کل باکتری­ ها در ایلئوم را کاهش داد (0/05>P). جمعیت میکروبی در سطوح مختلف مواد مغذی یکسان بود. استفاده از مکمل اسید آلی و سطوح مختلف مواد مغذی تاثیری بر متابولیت ­های خونی و ترکیب لاشه جوجه ­ها نداشت. به ­طور کلی تنظیم جیره تا سطح مواد مغذی کم تر از پنج درصد سطح توصیه شده کاب 500 در جوجه ­های گوشتی، تاثیر منفی بر عملکرد پرندگان نداشت. هم چنین اسید آلی باعث بهبود برخی صفات عملکردی به ­ویژه در دوره آغازین شد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of organic acids supplementation in diets with different levels of nutrients on performance, ileum microbial population and carcass characteristics of broiler chickens

نویسندگان [English]

  • Mohsen Jamaliyan 1
  • Farzad Ghanbari 1
  • Shahriar Maghsoudlou 1
  • Anwar Amoozmehr 2
1 Department of Animal Science, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran
2 Department of Animal and Poultry Nutrition, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
چکیده [English]

This study was conducted to investigate the effects of different levels of nutrients and organic acids supplementation (Biotronic) on performance, ileum microbial populations and blood parameters of broiler chickens. Three hundred broiler chicks (Cobb500 strain, of both sex) were allotted to 6 treatments and 5 replications in completely randomized design with factorial arrangement of 2×3 and 30 experimental units. Factors included two levels of organic acid supplementation (diets containing 0.1% organic acid supplementation and diets without organic acid supplementation) and three levels of nutrients (standard levels of Cobb recommendation, 2.5% and 5% below than that). The interaction between organic acid and different dietary nutrient levels was not significant in any of the traits. Using organic acids supplementation increased growth performance at first 21 days (P<0.05). Different levels of nutrients in diet had no significant effects on growth performance. Feed intake was not affected by dietary treatments. Organic acids supplementation improved feed conversion ratio (P<0.05), whereas this trait was not affected by different levels of dietary nutrients. Organic acids decreased total bacteria counts of ileum (P<0.05). Microbial population was similar in different levels of nutrients group. Organic acids supplementation had no effects on blood metabolites and carcass composition of the broiler chicks. To sum up, feed formulation up to 5% less than Cobb500 broiler chicken nutrients recommendation had no negative significant effect on production performance of the chickens. Also, the use of dietary organic acid supplement resulted in an improvement in some productive traits especially in starter phase of growth period.      

کلیدواژه‌ها [English]

  • Bacterial population
  • Biotronic
  • Blood metabolites
  • Carcass composition
  • Nutrient concentration

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فصلنامه محیط زیست جانوری
دوره 14، شماره 1
شماره بهار
اردیبهشت 1401
صفحه 137-146

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