نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری دامپزشکی، دانشکده دامپزشکی، دانشگاه رازی، کرمانشاه، ایران

2 استادیار گروه علوم دامی، پردیس کشاورزی و منابع طبیعی، دانشگاه رازی، کرمانشاه، ایران

3 دانشیار گروه علوم دامی، پردیس کشاورزی و منابع طبیعی، دانشگاه رازی، کرمانشاه، ایران

چکیده

هدف از این مطالعه،ارزیابی تاثیر سطوح مختلف گیاه و اسانس پونه بر فرایند تخمیر شکمبه و جمعیت پروتوزوآیی در بز بود. گیاه پونه به ترتیب در سطوح صفر، 25، 35، 55، 75 و 100 میلی‌گرم در 30 میلی‌لیتر و اسانس پونه در سطوح صفر، 1700 ،3000، 6700 ، 8300 ، 10000 میلی‌گرم در لیتر و موننسین (شاهد مثبت و50 میلی‌گرم محلول در اتانول) به مایع شکمبه اضافه شد. آزمون تولید گاز در قالب یک طرح کاملاً تصادفی و با پنج تکرار در هر تیمار انجام شد. گاز تولیدی در سطوح 75 و 100 میلی‌گرم گیاه پونه کاهش یافت (001/0˂p). تجزیه‌پذیری ماده ‌آلی هنگام استفاده از دو سطح 75 و 100 میلی‌گرم گیاه پونه و موننسین در مقایسه با شاهد کاهش(001/0˂p) یافت. در مقایسه با تیمارهای شاهد و موننسین، همه‌ی سطوح گیاه پونه غلظت ازت آمونیاکی را کاهش(001/0 ˂p) داد، اما ضریب تفکیک‌‌پذیری تنها در سطح 100 میلی‌گرم پونه و تیمار موننسین افزایش(001/0˂p) یافت. بازده تولید پروتئین میکروبی نیز در سطح100 میلی‌گرم پونه افزایش (001/0˂p) داشت. همزمان با کاهش مقادیر اسیدهای چرب فرار، انرژی قابل سوخت‌ وساز و انرژی خالص شیردهی در دو سطح 75 و 100 میلی‌گرم پونه نسبت به شاهد کاهش(001/0 ˂p) یافت. جمعیت کل پروتوزوآی و زیر خانواده‌ی انتودینینه در تمام سطوح گیاه پونه کاهش (001/0˂p) یافت. اسانس پونه، گاز متان، ازت آمونیاکی و جمعیت پروتوزوآیی را کاهش و بازده تولید پروتئین میکروبی را بهبود بخشید (001/0 ˂p ). بر اساس نتایج حاصل، استفاده از گیاه و اسانس پونه، گاز متان، نیتروژن آمونیاکی و جمعیت پروتوزوآیی را کاهش و ضریب تفکیک پذیری و بازده تولید میکروبی را بهبود می بخشد.

کلیدواژه‌ها

عنوان مقاله [English]

The effect of plant and essential oils of Mentha longoforia on in vitro ruminal fermentation parameters, methane production and protozoa population of goat

نویسندگان [English]

  • Ali Khezrian 1
  • Mohammad Ebrahim Nooriyan Soroor 2
  • Mohammad Mahdi Moeini 3

1 DVM Student, Veterinary Faculty, Razi University, Kermanshah, I.R of IRAN

2 Assistant Professor of Animal Department, Agriculture and Natural Resource Faculty , Razi University, Kermanshah,I.R of Iran

3 Associate Professor of Animal Department, Agriculture and Natural Resource Faculty , Razi University, Kermanshah,I.R of Iran

چکیده [English]

The aim of this study was to evaluate the effects of Mentha longofolia plant (MLP) and its essential oils (MLE) on ruminal fermentation and protozoa population in goat. The MLP at six levels 0, 25, 35, 55, 75 and 100 mg/30 ml, and the essential oil at six levels 0, 1700,3000,6700,8300 and 10000 mg/L plus monensin (as positive control, 50 mg and dissolved in ethanol) added to rumen fluid respectively. The in vitro gas production was conducted by compiled randomized design with five replications for each treatment. The gas production was decreased at levels of 75 and 100 mg of MLP (p˂0.001). Organic matter degradability was reduced (p˂0.001) at 75 and 100 mg levels respectively of MLP compared to control. Ammonia nitrogen concentration was decreased (p˂0.001) at all levels of MLP compared with control and monensin treatments. However, partition factor was increased (p˂0.001) only at 100 mg of MLP. The efficiency of microbial protein production was increased (p˂0.001). The metabolisable energy and net energy lactation were decreased (p˂0.001) by inclusion MLP at two level of 75 and 100 mg as total volatile fatty acids reduced, compared with control treatment. The total protozoa and subfamily of Entodinninea were declined (p˂0.001) at all levels of MLP compared with control and positive control treatments. The parameters of methane production, ammonia N and protozoa population were reduced (p˂0.001) by all levels of MLE. The efficiency of microbial protein production was enhanced (p˂0.001).Results suggest that the methane gas production, ammonia N and protozoa populations were reduced in both MLP and MLE and improved partition factor and microbial protein production.

کلیدواژه‌ها [English]

  • Ammonia nitrogen
  • Degradability
  • Goat
  • Greenhouse Gas
  • Mentha longofolia
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