Impact of orange (Citrus sinensis) peel meal as feed additive in the diets for mono-sex Nile tilapia (Oreochromis niloticus) fries | ||
| Menoufia Journal of Animal Poultry and Fish Production | ||
| Articles in Press, Accepted Manuscript, Available Online from 12 November 2022 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjapfp.2022.171239.1010 | ||
| Authors | ||
| Yasmin Hassan Saad1; Ebtehal El-Sayed Hussein* 2; Ashraf Abdel-Samee Goda3 | ||
| 1Poultry and Fish Production department, Faculty of Agriculture, Menoufia University. | ||
| 2Faculty of Agriculture Shebin El-Kom | ||
| 3National Institute of Oceanography and Fisheries (NIOF), Egypt. | ||
| Abstract | ||
| Two hundred and twenty five fries at average weight of 0.52 ± 0.01 g/fry were randomly distributed in 15 hapa (net enclosure measured 1 m × 1 m × 0.5 m) placed in 5 concrete tanks measured (2 m × 2 m × 1 m) in three replicates for each treatment. Fish from each hapa were counted and weighed each two weeks to evaluate the growth and readjust the feeding rate. 10% of fish body weight were fed to every three groups of the experimental fish with one of the experimental diets and decreased gradually to 8 and 6% by the end of the feeding trial. The experimental diets were formulated to be similar in crude protein (33.6 ± 0.1%) and crude lipids (7.1 ± 0.1%). The formulated diets were performed (g/kg diet) as, 0 (CTRL), 10 (OP10), 30 (OP30), 50 (OP50) and 70 (OP70) orange peel meal. Fish were fed the experimental diets for 6 days per week, three times per day for 98 days. There were no significant differences (P>0.05) among all treatments in final body weight, gain and average daily gain except fish fed OP10 diet significantly differed and gained the highest values. Also, no significant differences were observed in specific growth rate (SGR) among all treatments and the highest value was found in fish fed OP30 diet. It can be concluded that orange peel meal could be added to diets for mono-sex Nile tilapia at 10 g/kg diet without any adverse effects. | ||
| Keywords | ||
| orange peel; Nile tilapia mono-sex; performance; carotenoids; histology | ||
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