| Titles |
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English :
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Effect of limestone supplementation on ruminal degradability of fiber fractions for different kinds of silage
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| Abstract |
Four fresh crops, whole corn plant, corn stover, fodder corn (Darawa) and fodder sorghum were harvested, chopped and ground limestone was added to the different crops at the levels of 0.0, 0.5, 1.0, 1.5 and 2.0% of wet weight and ensiled in plastic buckets with about 2 kg capacity for two months. Representative samples were taken for determination fiber fractions. The rate of ruminal degradation of fiber fractions were determined using Friesian cows fitted with rumen cannulae.
Results indicated that the contents of fiber fractions tended to decrease with increasing level of limestone supplementation. The washing loss (zero time) of NDF and ADF decreased significantly (P<0.05) with increasing the level of limestone supplementation of more than 1%. NDF and ADF disappearance at the incubation times from 6 to 72 hours increased significantly (P<0.05) with increasing level of limestone supplementation up to 1 % and decreased significantly (P<0.05) afterwards. The rapid degradability fraction (a) of NDF and ADF decreased significantly (P<0.05) with increasing the level of limestone supplementation. While, the potential degradability fraction (b), degradability rate (c) and the outflow rate (k2) increased significantly (P<0.05) with increasing the level of limestone supplementation up to I % and decreased afterwards.
Keywords: fiber fractions, in situ disappearance, limestone, silage
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| Publication year |
2010
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| Availability location |
معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
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| Organization Name |
Animal Production Research Institute (APRI)
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| serial title |
Livestock Research for Rural Development
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| Author(s) from ARC |
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| External authors (outside ARC) |
نبيل عويضة
جامعة كفر الشيخ
السيد عبد الرؤوف
جامعة كفر الشيخ
وجدى حجاج
مهندس زراعى- حر
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Cows.
Fibres.
Limestone.
Silage.
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| Proposed Agrovoc |
fiber fractions;in situ disappearance;
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| Publication Type |
Journal
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