| Titles |
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English :
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Influence of roughage to concentrate ratio at type of roughage on digestibility ,some rumen parameters and fiber fractions degradability of tested rations with ruminants .
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Arabic :
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تأثير نسبة العلف الخشن إلى المركز ونوع العلف الخشن على معاملات الهضم وبعض مقاييس سائل الكرش ومعدل هدم مكونات الألياف في كرش المجترات .
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| Abstract |
This experiment was carried out to investigate the effects of feeding rations varying in roughage to concentrate (CFM) ratio (R:C) and different roughage sources, bean straw (BS), corn stalks (CS) and rice straw (RS) on the nutritional value of tested rations and some rumen parameter.
Nine metabolism trials were conducted to evaluate the nutritive value of the following rations with sheep at 90% of ad lib intake:
(1) 75%BS+25%CFM (2) 50%BS+50%CFM (3) 25%BS+75%CFM
(4) 75%CS+25%CFM (5) 50%CS+50%CFM (6) 25%CS+75%CFM
(7) 75%RS+25%CFM (8) 50%RS+50%CFM (9) 25%RS+75%CFM
Rumen liquor samples were taken to determine pH, NH3-N and VFA concentration at 0,2,4,6, and 8hrs after feeding during the last two days of the digestion trials. Two rumen cannulated Buffalo bulls were used to determine dry matter and fiber fractions degradability using the in situ technique.
The results showed that, dry matter and organic matter digestibility were significantly ( P<0.01) increased with increasing the CFM level in tasted rations. The lowest dry matter and organic matter digestibility values were shown with BS rations(56.3 and 60.1%), while the highest values were with CS rations (67.0 and 70.3%). The crude fiber digestibility was decreased (P<0.01) with increasing CFM level in the tested rations. The lowest CF digestibility value was recorded for BS rations(55.2%). Digestibility of ADF was significantly decreased (P<0.01) with increasing the CFM level in ration. the obtained value of pH, NH3-N and VFA were with in the normal ranges for normally function rumen with all tested rations. In most cases, disappearance of DM, NDF and ADF increased quickly up 48 hrs and continued to increase at slower rates up to 96hrs. the disappearance values of CS were significantly (P<0.05) higher than those of BS and RS.
Keywords: roughage concentrate ratio, digestibility, rumen parameters,
in situ.
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| Publication year |
2001
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| Pages |
193-207
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| Availability location |
معهد بحوث الانتاج الحيواني - شارع نادي الصيد - الدقي - جيزة
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| Availability number |
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| Organization Name |
Animal Production Research Institute (APRI)
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| serial title |
Egyptian Journal of Nutrition and Feeds
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| ISSN |
1110-6360
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| Author(s) from ARC |
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| External authors (outside ARC) |
احمد زكي محرز
جامعة المنصورة
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Digestibility.
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| Proposed Agrovoc |
roughage concentrate ratio;rumen parameters;in situ;
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| Publication Type |
Journal
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