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| Content Provider | Springer Nature Link |
|---|---|
| Author | Seo, Joo Young Lee, Sang Min |
| Copyright Year | 2008 |
| Abstract | An 8-week feeding experiment was conducted to investigate the effects of different dietary macronutrient level and feeding frequency on the growth, feed utilization, and body composition of juvenile rockfish. Triplicate groups of fish (body weight of 4.1 g) were fed the experimental diets containing either high levels of carbohydrate (HC, 35%), lipid (HL, 13%), or protein (HP, 55%) at different feeding frequencies (twice daily, once daily, and once every 2 days). Weight gain was affected by feeding frequency but not by dietary composition. Weight gain of fish fed the diets once every 2 days was significantly (P < 0.05) lower than that of other groups. Daily feed intake and energy intake were affected by both dietary composition and feeding frequency. Daily feed intake of fish fed the HC diet was significantly (P < 0.05) higher than that of fish fed the HL and HP diets at the same feeding frequency. Feed efficiency and protein efficiency ratio were affected by both dietary composition and feeding frequency and decreased with increasing feeding frequency in the same dietary composition. Feed efficiency and protein efficiency ratio of fish fed the HC diet were significantly (P < 0.05) lower than those of fish fed the HL diet at the same feeding frequency. Whole-body lipid content of fish fed the HL diet was significantly (P < 0.05) higher than that of fish fed the HC and HP diets at the same feeding frequency. These results indicate that an increase of dietary lipid level compared with dietary carbohydrate level may have the advantage of a protein-sparing effect at same feeding frequency, and a once-daily feeding regime is more effective than twice daily or one feeding every 2 days to improve growth performance of juvenile rockfish grown from 4 to 21 g. |
| Starting Page | 551 |
| Ending Page | 560 |
| Page Count | 10 |
| File Format | |
| ISSN | 09676120 |
| Journal | Aquaculture International |
| Volume Number | 16 |
| Issue Number | 6 |
| e-ISSN | 1573143X |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2008-02-19 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Rockfish Sebastes schlegeli Dietary composition Feeding frequency Zoology Freshwater & Marine Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Aquatic Science Agronomy and Crop Science |
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