ارزیابی فرصت‌های جدید بالقوه گیاهان دارویی به عنوان محصولات طبیعی بر فراسنجه‌های تخمیرپذیری شکمبه در شرایط برون‌تنی

Subject Areas : Camel

م. مهرآبادی ¹ , ع. وکیلی ² , م. دانش مسگران ³ , ر. ولی‌زاده ⁴

1 - Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
2 - Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
3 - Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
4 - Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

Received: 2017-02-21 Accepted : 2017-07-01 Published : 2019-06-01

Keywords: گیاه دارویی, قابلیت هضم, تولید گاز برون‌تنی, تخمیر شکمبه, اصلاح شکمبه,

Abstract :

به ­منظور بررسی اثرات افزودن پنج گیاه ­دارویی به تنهایی (HP) یا مخلوطی از آنها (HPM) بر میزان گاز تولیدی و فراسنجه­های تخمیرپذیری شکمبه، دو آزمایش برون­تنی طراحی گردید. در آزمایش اول پنج گیاه دارویی (سیر، اکالیپتوس، دارچین، آویشن و نعناع فلفلی) در سه غلظت متفاوت به جیره افزوده گردید (5، 10 و 15 درصد ماده خشک کنسانتره). در آزمایش دوم مخلوط گیاهان دارویی در غلظت­های 2، 4 و 6 درصد مورد استفاده قرار گرفتند. نتایج آزمایشات نشان ­داد که استفاده از گیاهان دارویی به تنهایی یا مخلوط، اکثر فراسنجه­های تخمیرپذیری شکمبه را تحت تأثیر قرار می­دهند. افزودن HP و HPM به طور معنی­داری کل گاز تولیدی از بخش قابل تخمیر (b) و نرخ ثابت تولید گاز (c) را افزایش دادند (01/0P<). غلظت آمونیاک (آزمایش اول)، متان (آزمایش اول و دوم)، کل اسیدهای چرب فرار (آزمایش اول و دوم)، استات (آزمایش اول)، پروپیونات (آزمایش اول و دوم) و نسبت استات به پروپیونات (آزمایش اول) تحت تأثیر HP و HPM قرار گرفتند. اسیدهای چرب کوتاه زنجیر شکمبه (01/0 P< و 05/0 P<به ترتیب برای زمان­های 16 و 24 ساعت انکوباسیون) و قابلیت هضم ماده آلی (OMD) با افزودن HP در ساعت­های 16 و 24 بالاتر از تیمار کنترل بود. هرچند قابلیت هضم ماده خشک (DMD) و انرژی متابولیسمی (ME) تیمار 6 درصد HPM در ساعت 24 انکوباسیون کمتر از کنترل بود (003/0 P< و 04/0P<). نتایج آزمایشات اثرات مفید HP و HPM در تغذیه نشخوارکنندگان به عنوان اصلاح کننده فرایند تخمیر شکمبه را نشان­ داد که می­توانند گوارش­پذیری و استفاده از مواد مغذی را افزایش داده و منجر به بهبود عملکرد حیوان در شرایط درون­تنی شوند.

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