کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2458613 1110763 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of polyethylene glycol, urea and sunflower meal on olive (Olea europaea var. europaea) leaf fermentation in continuous fermentors
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Effect of polyethylene glycol, urea and sunflower meal on olive (Olea europaea var. europaea) leaf fermentation in continuous fermentors
چکیده انگلیسی
A continuous culture system, inoculated with rumen liquor from goats or sheep, was used to study fermentation characteristics of olive leaves (OL). The effects of adding polyethylene glycol (PEG 4000 MW; 0, 2 or 20 g/100 g OL) and/or supplementing with urea (U) or sunflower meal (SM) (1.0 g N/100 g OM) were also studied. Olive leaf fermentation promoted low VFA production (35.2 mmol/d), predominantly of acetic acid, and low efficiency of VFA production (4.91 mol/kg digestible carbohydrates, DCHO). Both values increased with N supplementation, but effects of PEG were variable. No differences ascribed to the rumen inoculum origin were observed. The ammonia N concentration was increased only by supplementation with U. Total and amino acid N output was low and increased with N addition, but it was not affected by PEG treatment. No differences ascribed to the inoculum origin were observed concerning microbial N production rate or efficiency (g N/kg DCHO). There was no clear difference between sources of supplementary N regarding bacterial protein synthesis. On the basis of PEG results, the effect of tannins on OL fermentation was not important.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Small Ruminant Research - Volume 61, Issue 1, January 2006, Pages 53-61
نویسندگان
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