| Titles |
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English :
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Effect of polyethylene glycol and/or ensiling treatment on the detannification and utilization of Acacia salgina as a feedstuff for sheep
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Arabic :
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تأثير اضافة البولى ايثلين جليكول او السيلجة على تكسير التانينات لنبات الاكاسيا لاستخدامة كمادة علف للاغنام
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| Abstract |
Acacia saligna (A. cyanophylla) is a leguminous shrub naturally grown in the Egyptian desert, and it has an extremely important role in the urban eco-system because of its multipurpose usage. This study was designed to evaluate the nutritive value of A. saligna fodder cultivated in saline soils as a feedstuff for sheep fed fresh or in a silage form with or without polyethylene glycol (PEG) treatment.
The feeding trial was carried out with twenty growing male Barki sheep with initial live body weight of 21.85±1.50 kg. The animals were randomly divided into 4 groups (live animals each). Each animal was given 10g barley per kg live body weight per day as an energy supplement, while, Acacia, was given ad libitum. The daily portion in the experimental groups were as follows: (D1) control: barley and ad libitum fresh Acacia saligna (leaves & stems), (D2) barley and ad libitum fresh Acacia saligna plus polyethylene-glycol (PEG), (D3) barley and ad libitum Acacia saligna silage and (D4) barley and ad libitum Acacia saligna silage plus PEG.
The feeding trial was lasted for 90 days where animals were fed individually and fresh water was freely available. Apparent digestibility of and dietary nitrogen retention of experimental feeds were evaluated on four adult Barki sheep applying 4x4 latin square design experiment. Rumen fermentation kinetics as well as some rumen parameters monitored on three rumen-fistulated adult female sheep.
The results of apparent digestibility of nutrient, nutritive value, nitrogen retention, daily weight gain and dry matter intake of sheep fed diets D3 and D4 were significantly (P<0.05) higher than those fed D2 and D1. Ruminal ammonia-N, VFA concentration, rumen volume (?) and microbial protein synthesis were significantly (P<0.05) higher in animals fed Acacia silage with or without PEG than those fed fresh Acacia. The outflow rate of Acacia silage with or without PEG was significantly (P<0.05) lower than fresh Acacia. Animals fed Acacia silage either with or without PEG had more soluble and degradable fractions and less undegradable fractions of dry matter, organic matter and crude protein and had more effective degradability than those fed fresh Acacia leaves and stems.
Ensiling of green Acacia was proven economic and simple technique to enhance utilization of Acacia as a feedstuff for sheep, while PEG treatment could partially improve utilization of only fresh Acacia.
Keywords: Acacia, fodder, shrubs, silage, sheep, intake, nutritive values, degradability.
polyethylene-glycol
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| Publication year |
2006
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| Pages |
249-261
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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 |
Egyptian Journal Nutrition and Feeds
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| ISSN |
1110-6360
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Acacia.
Forage.
Nutritive value.
Sheep.
Shrubs.
Silage.
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| Proposed Agrovoc |
polyethylene-glycol;degradability;intake;
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| Publication Type |
Journal
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