Citation
Bureau Dominique P., . and Chowdhury M. A. Kabir, . Predicting body composition of Nile tilapia (Oreochromis niloticus). pp. 597-605. ISSN 0116-6514
Abstract
Accurate prediction of proximate composition for a commercially cultured fish at a particular body weight could help to reduce overall feed waste improve feed efficiency and increase profitability. We studied the relationship between biochemical composition of Nile tilapia and its wet weight for the range of minimum and maximum body weight found in the published literature. We also tested the predictive value of regression equations. Logarithmic trends of the proximate composition showed a linear trend for tilapia up to 0.4 g. The trend formed a plateau for tilapia larger than 5 g. The slopes (b) for water protein fat and ash contents as percent bodyweight were -0.008 0.003 0.003 and 0.002 respectively. The slopes were close to 0� and did not change significantly after removing data from fishes smaller than 5 g in all four cases. Mean percent error of water (-0.145) and protein (-0.769) showed no differences between them. A large percent error mean for fat (-39.179) suggested presence of variations in fat contents to whole body weight. Our findings suggested no significant changes in percent water and percent protein over the life-span of Nile tilapia partially rejecting the null hypothesis that percent composition of Nile tilapia varies over their lifetime.
Download File
Full text available from:
Official URL: http://www.asianfisheriessociety.org/publication/d...
|
Abstract
Accurate prediction of proximate composition for a commercially cultured fish at a particular body weight could help to reduce overall feed waste improve feed efficiency and increase profitability. We studied the relationship between biochemical composition of Nile tilapia and its wet weight for the range of minimum and maximum body weight found in the published literature. We also tested the predictive value of regression equations. Logarithmic trends of the proximate composition showed a linear trend for tilapia up to 0.4 g. The trend formed a plateau for tilapia larger than 5 g. The slopes (b) for water protein fat and ash contents as percent bodyweight were -0.008 0.003 0.003 and 0.002 respectively. The slopes were close to 0� and did not change significantly after removing data from fishes smaller than 5 g in all four cases. Mean percent error of water (-0.145) and protein (-0.769) showed no differences between them. A large percent error mean for fat (-39.179) suggested presence of variations in fat contents to whole body weight. Our findings suggested no significant changes in percent water and percent protein over the life-span of Nile tilapia partially rejecting the null hypothesis that percent composition of Nile tilapia varies over their lifetime.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Oreochromis |
| AGROVOC Term: | Oreochromis niloticus |
| AGROVOC Term: | Tilapia |
| AGROVOC Term: | Fishes |
| AGROVOC Term: | Aquatic animals |
| AGROVOC Term: | Body weight |
| AGROVOC Term: | Proximate composition |
| AGROVOC Term: | Regression analysis |
| AGROVOC Term: | Water content |
| AGROVOC Term: | Proteins |
| Depositing User: | Mr. AFANDI ABDUL MALEK |
| Last Modified: | 24 Apr 2025 00:53 |
| URI: | http://webagris.upm.edu.my/id/eprint/7917 |
Actions (login required)
 |
View Item |
