Growth performance of five different strains of Nile tilapia (Oreochromis niloticus) introduced to Tanzania reared in fresh and brackish waters
| Autor: | Christos Palaiokostas, Mbiru Moses, Dirk-Jan de Koning, Leonard J. Chauka, Matern S. P. Mtolera |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Salinity Veterinary medicine Protein diet Science Ecosystem ecology Fresh Water Body weight Tanzania 010603 evolutionary biology 01 natural sciences Article Nile tilapia Stocking Animals Gene–environment interaction Saline Waters Marine biology Multidisciplinary Brackish water biology Cichlids 04 agricultural and veterinary sciences biology.organism_classification Oreochromis Fish and Aquacultural Science 040102 fisheries Medicine 0401 agriculture forestry and fisheries |
| Zdroj: | Scientific Reports Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021) |
| ISSN: | 2045-2322 |
| Popis: | Five introduced strains of Nile tilapia (Oreochromis niloticus) were tested for growth performance both in fresh- and brackish-water (2 salinity units) environments for 56 days. The BIG NIN, GIFT, Chitralada, “Ruvu Farm” and Silver YY strains with initial mean average weight (± standard error) of 96.4 ± 6.90 g, 104.1 ± 7.19 g, 137.2 ± 7.21 g, 53.2 ± 6.98 g and 95.3 ± 7.11 g, respectively were used. Individuals were tagged and pooled in hapas (12 m × 8.5 m × 2 m each), aligned into different ponds (20 m × 20 m each). Stocking density of 5 fish/m2 and 350 g/kg crude protein diet were used. Overall, the average weight gain for GIFT strain was 7.5%, 32%, 45% and 86.5% higher than BIG NIN, Chitralada, “Ruvu Farm” and Silver YY strains, respectively, across both environments. All strains performed significantly better (p |
| Databáze: | OpenAIRE |
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