| Titles |
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English :
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Effects of Radish root extract on improving the utilization of corn dried distillers grains with solubles in Nile tilapia (Oreochromis niloticus) fry diets
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| Abstract |
The present study aimed to evaluate the effect of replacing com dried distillers grains with solubles (DDGS) at 0, 50 or 100 % replacement levels of fish meal (FM) without or with radish root extract (as a source of peroxidase enzyme, RRE) on perfoxmance of Nile tilapia (Oreochromis niloticus) fly. A total number of 180 mono sex Nile tilapia (Oreochromis niIoticus) fly averaging 1.7 ± 0.23 g in wet body weight were allotted factorially to 6 dietary treatments. Such treatments were formulated to contain approximately 30% crude protein using fish meal as source of animal protein in treatment one, T1 (control diet), DDGS (27 % CP) to replace 50 % of fish meal in diet two (T2) and 100% in diet three (T3), without using radish root extract (RRE). RRE was added at 1 % to the previous diets to obtain the other three treatments T4, T5 and T6, respectively. The fish were stocked at a density of 10 fish/aquarium (701 each) in triplicate via water recirculating system with exchange water rate approximately 10% of total volume per day. Using DDGS at 50 or 100% instead of fish meal significantly decreased weight gain of fish by 31.65 and 58.05 %, respectively compared to control diet. The addition of RRE to DDGS at 50 or 100% instead of fish meal significantly increased weight gain by 55.7 and 40.83 %, respectively compared to such diets alone. The addition of RRE to control, DDGS at 50 or 100% instead of fish meal improved feed conversion by 4.79, 17.25 and 13.05%, respectively compared to such diets alone. It seemed that RRE was a suitable and natural additive to PDDGS diet. Further research is needed for the use of DDGS at higher inclusion levels in the diet to replace soybean meal after using different enhancers.
Key words: Nile tilapia . Com dried distillers grains with solubles . Radish root extract. Growth performance . Feed utilization
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| Publication year |
2011
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| Pages |
938-946
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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 |
American-Eurasian Journal Agricultural and Environmental Science
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| ISSN |
1818-6769
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| Author(s) from ARC |
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| External authors (outside ARC) |
محمد محمد السعيد حسونة
جامعة الفيوم
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Feed conversion efficiency.
Oreochromis niloticus.
Performance testing.
Tilapia.
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| Proposed Agrovoc |
Radish root extract;Com dried distillers grains;
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| Publication Type |
Journal
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