ارزیابی تأثیر جاذب‌های مختلف سرب بر فراسنجه‌های تولید گاز در شرایط آزمایشگاهی

Subject Areas : Camel

س. آزادبخت ¹ , ع.ا. خادم ² , م.ع. نوروزیان ³

1 - Department of Animal Science, College of Abouraihan, University of Tehran, Tehran, Iran
2 - Department of Animal Science, College of Abouraihan, University of Tehran, Tehran, Iran
3 - Department of Animal Science, College of Abouraihan, University of Tehran, Tehran, Iran

Received: 2016-05-29 Accepted : 2017-01-15 Published : 2017-06-01

Keywords: گوسفند, سرب, جاذب, تخمیر شکمبه,

Abstract :

جهت ارزیابی کارایی چند جاذب سرب، از روش آزمون گاز استفاده شد. مایع شکمبه حاصل از گوسفندان فیستوله شده به همراه 2/0 ± 200 میلی‌گرم جیره آزمایشی انکوبه شدند. تیمارهای آزمایشی شامل 1) شاهد (بدون سرب و جاذب)، 2) 15 میلی‌گرم در کیلوگرم ماده خشک استات سرب و بدون جاذب 3) 15 میلی‌گرم در کیلوگرم ماده خشک استات سرب و 3 درصد کربن فعال 4) 15 میلی‌گرم در کیلوگرم ماده خشک استات سرب و 3 درصد نانو رس و 5) 15 میلی‌گرم در کیلوگرم ماده خشک استات سرب و 3 درصد بنتونیت بودند. اضافه کردن سرب باعث کاهش میزان و نرخ تولید گاز در تمام زمان‌های انکوباسیون شد (01/0>P). میزان و نرخ تولید گاز در تیمار نانوکلی نسبت به سایر تیمارها بیشتر بود (05/0>P). افزودن سرب به محیط انکوباسیون باعث کاهش قابلیت هضم ماده آلی، مقدار انرژی قابل متابولیسم و انرژی خالص و تولید اسیدهای چرب کوتاه زنجیر شد (01/0>P). در بین جاذب‌های مختلف نانو رس تأثیر بیشتری بر فراسنجه‌های تخمیر شکمبه داشت و توانست نرخ و میزان تولید گاز را بیشتر افزایش دهد.

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