DENSIDADE DE ESTOCAGEM NA ALEVINAGEM DE TILÁPIA-DO-NILO EM TANQUE-REDE
| Autor: | Delma Machado Cantisani Pádua, Henrique Maeda, Rene Henrique da Silva, Nádia Pales Machado, Valéria Rodrigues, Raquel Priscilla de Castro Oliveira, Marília da Silva Aguiar, Paulo César Silva |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Oreochromis niloticus
growth performance Protein efficiency ratio intensive system General Veterinary Ecology Fish farming Cages lcsh:S Biology biology.organism_classification Feed conversion ratio lcsh:Agriculture Nile tilapia Oreochromis Stocking Animal science medicine Tukey's range test Animal Science and Zoology lcsh:Animal culture medicine.symptom Weight gain lcsh:SF1-1100 |
| Zdroj: | Ciência Animal Brasileira, Vol 11, Iss 3, Pp 471-476 (2010) |
| ISSN: | 1518-2797 |
| Popis: | The experiment evaluated the stocking density of Nile tilapia (Oreochromis niloticus) fingerling in netcages for 43 days. Fifteen 180L netcages were used as experiment units, in a pond with 80% water renovation. The tested stocking densities were 700 fingerlings/m3; 1,000 fingerlings/m3 and 1,300 fingerlings/m3. The mean initial weight of the fingerlings was 4.77 ± 0.29 g. The following parameters were analyzed: mortality rate; final weight; final length; final biomass; feed conversion rate; weight gain; daily weight gain; protein efficiency rate; specific growth rate and condition factor. Variance analyzes and Tukey test at 5% were applied to compare the different treatments. Treatment with greater stocking density differed significantly from treatment with lower density regarding final weight, final biomass, weight gain, daily weight gain and specific growth rate. The other parameters did not present significant differences among the treatments (p>0.05). Under these experimental conditions, the best stocking densities for cages were 1,000 to 1,300 fingerlings/m3. KEYWORDS: Cages, growth performance, intensive system, Oreochromis niloticus. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|