| Titles |
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English :
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Effect of dietary plant protein and microbial phytase levels on performance of broiler chicks
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Arabic :
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تأثير التغذية على مستويات مختلفة من البروتين النباتى و انزيم الفيتيز الميكروبى على اداء كتاكيت التسمين
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| Abstract |
A total number of 630 one - day old unsexed Arbor Acres broiler chicks were used to study the effect of different crude protein and microbial phytase levels on broiler performance, nutrients digestibility coefficient, carcass characteristics and economic efficiency. A 3 x 2 factorial arrangement of treatments was applied using three levels of microbial phytase (0.00,400 and 800 FTU/Kg diet) and two levels of protein (23/21 % and 20/18 % crude protein) during the growing and the finishing period, respectively. Results obtained can be summarized
As follow:
Supplemented broiler diets with phytase either at level 400 FTU or 800? FTU/Kg diet improved significantly (p<0.05) body weight gain and protein utilization efficiency during the overall period (1-7 weeks).Phytase mediated an improvement in feed conversion and protein utilization efficiency when birds fed lower protein diet and supplemented with phytase at level 800 FTU/kg diet compared with other group fed 23/20 % crude protein. Data observed an improvement digestibility coefficients of organic matter, crude protein, ether extract and nitrogen free extract due to adding microbial phytase to growing / finisher diet either containing 23/20 or 21/18 % crude protein. Supplementation broiler diets with microbial phytase at 800 FTU/Kg diet, significantly (P<0.05) increased nitrogen, calcium and phosphorus retention. Carcass yield was not affected either by dietary protein levels or phytase supplementation. Accordingly, it is possible to decrease dietary protein level by 2% during growing and finishing periods when supplemented broiler diets by 800 FTU/kg diet of phytasf! to obtain economic gain and protect environment from pollution.
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| Publication year |
2004
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| Pages |
101-121
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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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| City |
الاسكندرية
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| serial title |
Egyptian Poultry Science
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| ISSN |
1110-5623
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| Author(s) from ARC |
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| External authors (outside ARC) |
ممدوح عمر عبد السميع
جامعة القاهرة
محمد رضا ابراهيم
جامعة القاهرة
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Broiler chickens.
Carcass composition.
Crude protein.
Digestibility.
Economic analysis.
Performance testing.
Plant protein.
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| Proposed Agrovoc |
microbial phytase;
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| Publication Type |
Journal
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