| Titles |
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English :
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Replacement of canola meal for soybean meal in diets of Tilapia hybrid (Oreochromis niloticus* Oreochromis aureus) fingerlings
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Arabic :
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احلال كسب الكانولا محل كسب فول الصويا في علائق اصبعيات البلطى الهجين (بلطى نيلى ء بلطى اوربا)
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| Abstract |
Two feeding experiments were conducted for 90 days each to evaluate the suitability of canola meal (CM) as a partial or complete substitute for soybean meal (SSM) in diets of tilapia hybrid fingerlings (Oreochromis niloticus x Oreochromis aureus). All the experimental diets were formulated to be isonitrogenous and isoenergetic to contain 25.4% crude protein and 4514 kcal gross energy/kg. In the first and the second feeding experiments, five diets were formulated to replace SBM with CM at 0%, 25%, 50%. 75% and 100%. Triplicate groups of 15 fish averaging 3.0± 0.02g (mean ± SD) and 8 fish averaging 14.03 ± 0.07g for experiments I and 2, respectively, were fed one of five experimental diets at 3% of total fish biomass.
The results obtained revealed clearly that all levels of SBM substitution (25, 50, 75 and 100%) by CM in both experiments are superior regarding all growth performance parameters compared to the control diet. However, fish fed diet with 100% CM substitution showed the lowest digestibility of CP, while those with 75% CM replacement had the poorest digestibility of EE, NFE and gross energy. Additionally, one of the key findings of the current study was that. canola meal did not introduce sufficient anti-nutritional factor to cause nutritional disorders, even when included in the diet at high levels as SBM substitute. The economic evaluation showed that diets containing higher levels of CM were less expensive and produced fish at lower cost per unit of body weight (kg) than diets containing higher levels of SBM in the experimental diets. Therefore, canola meal can be included up to 100% substitution level of SBM not only without negative affects but also to improve the productive performance of tilapia hybrid fingerlings.
Keywords: canola meal. soybean meal, tilapia hybrid, productive performance, economic evaluation, digestibility.
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| Publication year |
2006
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| Pages |
95-113
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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 |
Digestibility.
Soybean meal.
Tilapia.
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| Proposed Agrovoc |
canola meal;tilapia hybrid;productive performance;economic evaluation;
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| Publication Type |
Journal
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