| Titles |
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English :
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Effect of feeding varying levels of acacia leaves and twigs on productive performance of Awassi ewes under semi-arid condition of north Sinai
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Arabic :
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تأثير التغذية على مستويات مختلفة من الاكاسيا على الاداء الانتاجى للناج العواسى تحت ظروف شمال سيناء
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| Abstract |
This study was carried out to evaluate the effect of feeding different levels of acacia to A wassi ewes on digestibility coefficients and nutritive values of the rations, milk yield and composition, growth performance of their lambs and some blood serum constituents of the ewes and their lambs through two experiments. In the first experiment, three rations were nutritionally evaluated through three digestion trials with rams, the control ration basal ration consisted of CFM and rice straw to cover their nutritional requirements, while the second and third rations consisted of CFM to cover 65 or 45% of TDN requirements and acacia ad lib. The second was a feeding trial in which a total of 15 A wassi ewes were divided into three equal groups. The 1st group (control) was fed on concentrate feed mixture (CFM) and rice straw to cover 85% from their total digestible nutrients (TDN) requirements. While 2nd and 3rd groups and their lambs were fed the concentrates feed mixture to cover 65% and 45% of TDN requirements from basal ration and were offered acacia ad lib., respectively.
The main results showed significant differences among rations in the digestibility coefficients for OM, CP and CF which decreased when acacia consumption increased. Diet 1 and 2 had the highest (P<0.05) TDN value, followed by diet 3. All animals were in positive N balance in the three experimental rations. There were no significant effects on birth weight, weaning weight and daily weight gain (DWG) of Awassi lambs due to feeding their mothers on acacia up to 55% of their nutrient requirements. Milk yield was not significantly affected by feeding acacia. Milk composition in terms of percentages of fat, protein, lactose, solids not fat and total solids were not significantly different among treatments. The differences among treatments in the concentrations of total protein, albumin, globulin, urea-N, cholesterol, total lipids, glucose, creatinine, GOT and GPT of blood serum of the ewes and their lambs were not significant.
It could be concluded that replacing of acacia up to 55% of the TDN requirements of Awassi ewes by acacia improved productive performance, economical efficiency and decreased feed cost under North Sinai conditions.
Keywords: Acacia, Awasi ewes, digestibility, productive and growth performance, milk yield and composition, blood metabolites, economic efficiency, North Sinai.
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| Publication year |
2011
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| Pages |
39-52
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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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| External authors (outside ARC) |
احمد زكى محرز
جامعة المنصورة
محمد رضا موسى
كلية العلوم الزراعية البيئية- العريش- جامعة العريش
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Blood.
Ewes.
Lambs.
Milk yield.
Performance testing.
Semiarid climate.
Spurs.
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| Proposed Agrovoc |
acacia leaves;digestibility coefficients;nutritive values;milk composition;growth performance;
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| Publication Type |
Journal
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