اثرات هورمسیس‌گونه (اثرات دوگانه) فراورده بیولوژیک پروبیوتیک بر فراسنجه‌های خونی و عملکرد با افزایش مقادیر آن در جیره بره‌های فراهانی

نوع مقاله : مقاله کامل

نویسندگان

گروه علوم دامی دانشکده کشاورزی و منابع طبیعی دانشگاه اراک

چکیده

نشخوارکنندگان کوچک یکی از اصلی‌ترین منابع درآمد در معیشت دامداران روستایی می‌باشد. تغذیه از مهم‌ترین عوامل موثر در حفظ درآمد پایدار در این صنعت محسوب می‌شود. مطالعه حاضر باهدف بررسی اثرات افزودن مکمل بیورومینا بعنوان یک مکمل پروبیوتیکی در سطوح مختلف بر عملکرد، رشد و فراسنجه‌های خونی در بره‌های فراهانی طراحی شد. بره‌ها در سه گروه مختلف بشرح ذیل تقسیم شدند: گروه اول: شاهد (بدون افزودنی)، تیمار یک: یک گرم پروبیوتیک بیورومینا (سطح پایین)، تیمار دو: دو گرم پروبیوتیک بیورومینا (سطح بالا). نتایج مطالعه حاضر نشان داد که سطح بالای بیورومینا اثر منفی بر متابولیت‌های خونی بخصوص آنزیم‌های کبدی (آلکالین فسفاتاز) و گلوکز داشت. این اثرات شبیه اثرات دوگانه یا دوفازی هورمسیس بود و در نتیجه بره‌های دریافت کننده بیورمینا در سطح بالا نسبت به سایر گروه‌ها میانگین افزایش وزن روزانه، وزن نهایی و کارآیی خوراک پایین‌تری داشتند. به هر حال، مکمل‌کردن بیورومینا در سطح پایین اثرات مثبتی بر وزن نهایی بره‌ها داشت. بطور کلی به نظر می‌رسد مکمل کردن بیورومینا در سطح پایین احتمالا می‌تواند عملکرد و وزن نهایی بره‌های فراهانی را بهبود بخشد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Hormesis (Biphasic Effects) of Probiotic Biologic Product with Increasing of its Levels in Farahani Lambs

نویسندگان [English]

  • M. Khodaei Motlagh
  • M. Mirzaei
Department of Animal Science, Faculty of Agriculture and Natural Resources, Arak University
چکیده [English]

Small ruminants are one of the main sources of income for rural farmers. Nutrition is one of the most important factors affecting income sustainability in this industry.  This study was designed to investigate the effects of different level of Bio-Rumina as a probiotic supplement on performance, growth and blood metabolites of Farahani lambs. Lambs were divided into three groups including: Group 1: control (no supplementation ), treatment 1: one gram of Bio-Rumina supplementation (low level), treatment 2: two gram of Bio-Rumina supplementation (high level).The results of this study showed that high level of Bio-Rumina supplementation had negative effects on serum concentration of liver enzymes (alkaline phosphatase) and glucose. These effects were similar to Hormesis (biphasic) effects  which lambs receiving Bio-Rumina in high level had lower average daily gain, final body weight and feed efficiency compared with other groups. However, low level of Bio-Rumina supplementation had  positive effects on the final body weight of the lambs. In general, Bio-Rumina supplementation in low level could improve performance and final body weight in Farahani lambs.

کلیدواژه‌ها [English]

  • Lamb
  • Probiotic
  • Blood metabolites
  • Performance
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