تأثیر استفاده از افزودنی های باکتریایی و اسانس رزماری، رازیانه و زنیان بر ترکیب شیمیایی، خصوصیات تخمیری، فراسنجه های تولید گاز و قابلیت هضم سیلاژ ذرت در شرایط برون تنی

نوع مقاله : علمی پژوهشی - تغذیه نشخوارکنندگان

نویسندگان

1 دانشگاه گنبدکاووس

2 گنبدکاووس

چکیده

مطالعه‌ای به منظور بررسی تأثیر استفاده از افزودنی باکتریایی و اسانس رزماری، رازیانه، زنیان در دو سطح 125 و 250 میکرولیتر بر کیلوگرم علوفه تازه بر ترکیب شیمیایی، قابلیت هضم برون‌تنی، فراسنجه‌های تولید گاز و ویژگی‌های تخمیر سیلاژ ذرت در قالب یک طرح کاملاً تصادفی انجام شد. علوفه‌های برداشت شده ذرت در سه تکرار در کیسه‌های پلاستیکی به صورت دستی فشرده و سیلو شدند. سیلوهای پر شده در دمای اتاق نگهداری و برای مدت 3، 7، 21 و 45 روز سیلو شدند. سیلاژهای ذرت تلقیح شده با افزودنی باکتریایی در روزهای 3 و 7 در مقایسه با تیمار شاهد دارای ماده خشک بالاتری بودند. غلظت کربوئیدرات‌های محلول در آب میان تیمارها مختلف بود. بالاترین و پایین‌ترین مقدار به ترتیب مربوط به تیمار رازیانه در سطح 125 میکرولیتر بر کیلوگرم در روز 3 و تیمار افزودنی باکتریایی در روز 45 پس از سیلو کردن بود. در بین تیمار‌ها، تیمار شاهد در روز 3 پس از سیلو کردن و تیمار رازیانه 250 میکرولیتر در روز 7 پس از سیلو کردن به ترتیب دارای بالاترین و پایین‌ترین پتانسیل تولید گاز بودند. سیلاژهای عمل آوری شده با اسانس زنیان در سطح 250 میکرولیتر و اسانس رازیانه در سطح 125 میکرولیتر در روز 21 به ترتیب بیشترین و کمترین توده میکروبی تولیدی را داشتند. به طور کلی، نتایج نشان داد که استفاده از اسانس‌ها در مقایسه با تیمار شاهد تأثیر قابل ملاحظه‌ای بر ارزش تغذیه‌ای سیلاژ ذرت نداشتند.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of Bacterial Inoculation and Essential Oils of Rosemary, Fennel and Carum Copticum as Additive on Fermentation Process, Microbial Population and Nutritional Value of Corn Silage

نویسندگان [English]

  • fereshteh maghsoudloo 1
  • javad Bayatkouhsar 2
  • farzad ghanbari 2
  • fakhtak taleai 2
1 Gonbad Kavous University
2 Gonbad Kavous University
چکیده [English]

Introduction In recent years the use of herbal products to prevent disease-causing agents including viruses, bacteria, fungi Pistaciavera are widely considered. They have a wide range of antimicrobial activity and a willingness to use them escalated. The aim of this study was to evaluate the effect of bacterial inoculation and essential oils of rosemary, fennel and carum copticum on chemical composition, gas production parameters and fermentation characteristics of corn silage in vitro.
Materials and Methods Whole corn plants were harvested at the medium dough stage of maturity (30% DM) and chopped with a conventional forage harvester under farm conditions to 3-5 cm of lengths. Representative forage samples (3 kg) of inoculated and untreated corn silage were packed manually, in triplicate, into plastic bags. Bacterial inoculants and essential oil diluted in deionized water and applied with a hand held sprayer while forage samples were stirred manually. A similar quantity of deionized water was sprayed on the control forage. The filled silos were stored at ambient temperature and allowed to ensile for 3, 7, 21 and 45 days. After designated ensiling times, silos were opened and the ensiled forage was mixed thoroughly and then were dried at a 60°C in oven for 48 h and then ground to pass through a 2 mm screen for later analysis.
Results and Discussion The chemical composition of samples was affected by different treatments (P

کلیدواژه‌ها [English]

  • chemical composition
  • Bacterial inoculation
  • Gas production
  • Essential oils
  • in vitro digestibility

مراجع

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  • تاریخ دریافت: 19 آذر 1394
  • تاریخ پذیرش: 19 آذر 1394
  • تاریخ اولین انتشار: 01 دی 1396

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