| Titles |
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English :
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The use of non-conventional energy and protein feed sources in Nile Tilapia diets
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Arabic :
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استخدام مصادر علفية غير تقليدية للطاقة و البروتين في علائق البلطي النيلي
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| Abstract |
This study was designed to determine the effect of partially replacing fish meal protein at 0, 25, 50 and 75% with either hatchery by-product meal (HBM) or brewer dried grains (BDG) in the first experiment. Similarly, 0,25,50 and 75% of yellow corn energy had been replaced with either date stone (DSM) or potato by-product meal (chippsy) (PBM) in the second experiment. In each feeding experiment, a total number of 315 of Nile tilapia fish (10.32g) were randomly distributed into 7 experimental treatments, each in three replicates.
The experimental diets contain nearly similar CP (30%) and GE (4400 Kcal /Kg) and fed to Nile tilapia fingerlings at 3 % of live body weight through 14o days in each of the two experiments.
Chemical analysis showed the presence of higher ash and CP of HBM compared to BDG, the later characterized by its higher CF content. Moreover, DSM contains higher CF compared to PBM which has higher EE percent Neither HBM and BDG as non-conventional protein sources nor DSM and PBM as alternative energy sources has any detrimental effect on the surrounding water of experimental tilapia fish. Therefore, all fish were in normal being and activity.
The results showed that fish meal protein could be replaced by either 75% HBM or 25% BDG, while yellow com energy can be substituted by either 25% DSM or up to till 50% PBM, without harmful effect on the performance and feed utilization of fish. Moreover, such substitution levels recorded the least feed cost needed to obtain one kilogram of live weight gain. Neither the tested non conventional protein nor energy sources affect the activity of GOT, GPT and alkaline phosphatase in liver. By comparison, HBM and PBM were nutritionally and economically superior compared to HBM and DSM as non-conventional protein and energy sources, respectively.
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| Publication year |
2001
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| Pages |
173
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| Availability location |
مكتبة معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
721
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| Organization Name |
Animal Production Research Institute (APRI)
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| Country |
Egypt
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| Author(s) from ARC |
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AGROVOC
TERMS |
Alanine aminotransferase.
Aspartate aminotransferase.
Brewery byproducts.
Feed conversion efficiency.
Fish meal.
Maize.
Performance testing.
Potato products.
Proteins.
Tilapia.
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| Publication Type |
PhD Thesis
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