اثر روغن اسانسی آویشن شیرازی، اکالیپتوس و مخلوط آنها بر فراسنجه‌های تخمیر با استفاده از مایع شکمبه بز مرخز

Subject Areas : Camel

س. میرزایی چشمه‌گچی ¹ (Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah, Iran)
م.م. معینی ² (Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah, Iran)
ف. هژبری ³ (عضو هیات علمی د انشگاه رازی)
م.ا. نوریان سرور ⁴ (Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah, Iran)

Received: 2016-06-20 Accepted : 2016-10-15 Published : 2017-03-01

Keywords: تولید متان, گوارش‌پذیری ماده آلی, ضریب تفکیک, جمعیت پروتوزوآ,

Abstract :

در این مطالعه، سطوح مختلف روغن­های اسانسی آویشن شیرازی، اکالیپتوس (0، 100، 250، 500، 750 و 1000 میکروگرم در میلی­لیتر) و مخلوط یکسان آنها به علوفه یونجه همراه با مایع شکمبه بافری شده بز مرخز اضافه وگرمخانه گذاری شد تا تولید گاز، تخمیر شکمبه و جمعیت پروتوزوآ در شرایط آزمایشگاهی مورد مطالعه قرار گیرد. پتانسیل تولید گاز (B) و سرعت تخمیر (C) در تمام تیمارهای آزمایشی کاهش یافت درحالی­که فاز تأخیر (L) افزایش نشان داد. آویشن شیرازی و اکالیپتوس تأثیری بر pH نداشتند ولی در سطوح بالای مخلوط روغن­های اسانسی نسبت به شاهد، pH بالاتر بود (001/0>P). تولید نیتروژن­ آمونیاکی به سبب افزودن مخلوط روغن­های اسانسی کاهش یافت (01/0>P) و غلظت کل اسیدهای چرب فرار با اضافه نمودن روغن­های اسانسی آویشن شیرازی و اکالیپتوس کاهش نشان داد (01/0>P). گاز تولیدی 24 ساعته، تولید متان و میزان ماده­ آلی تجزیه شده کاهش یافت (01/0>P)، درحالیکه ضریب تفکیک­پذیری در همه تیمارها افزایش نشان داد. انرژی متابولیسمی کاهش یافت (05/0>P). افزودن روغن اسانسی سبب کاهش تعداد پروتوزوآی کل و جنس­های مختلف پروتوزوآ شد (001/0>P). نتایج نشان داد که روغن­های اسانسی آویشن شیرازی و اکالیپتوس می­توانند در تعدیل تخمیر شکمبه مؤثر باشند ولی در سطوح بالا، دارای اثر ضد پروتوزوآیی می‌باشند.

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