GROWTH PERFORMANCE OF NILE TILAPIA (OREOCHROMIS NILOTICUS ) AS AFFECTED WITH DIETARY INCORPORATION OF FERMENTED FISH SILAGE OR BOILED FULL FAT SOYBEANS AS PROTEIN REPLACERS | ||||
Egyptian Journal of Aquatic Biology and Fisheries | ||||
Article 11, Volume 5, Issue 3, July 2001, Page 137-150 PDF (778.6 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ejabf.2001.1696 | ||||
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Authors | ||||
Elhani A. Wassef1; Mohamed Sweilum2; Raky Attalla2 | ||||
1National Institute of Oceanography & Fisheries (NIOF), Alexandria Branch. | ||||
2NIOF, El-Kanater El-Khayria Research Station. | ||||
Abstract | ||||
Two experiments were performed in order to evaluate two feed stuffs, namely fermented fish silage (FFS) and boiled full-fat soybeans (BFS) as alternative protein sources for fish meal (FM) or fish meal replacers in Nile tilapia feeds. Both FFS and BFS performed well up to 50% substitution of FM without a significant loss in performance reared fish. These results also indicated that FFS is a promising feed ingredients for substituting fish meal at 25-50% dietary protein in Nile tilapia diets.When different levels of boiled full-fat soybeans (BFS) were tested in the next experiment, similar results were obtained. Among this tested levels, substitution of fish meal with 25% dietary BFS was possible without any significant reduction in performance parameters The utilization of FFS or BFS as the only dietary protein source (100%) significantly reduced growth performance of the tested fish. | ||||
Keywords | ||||
Fish culture; Oreochromis niloticus; growth rate; fish meal replacers; feed and protein utilization; Fish production | ||||
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