Loading...
Please wait, while we are loading the content...
Similar Documents
Produção da tilápia tailandesa Oreochromis niloticus, estocada em diferentes densidades em tanques-rede de pequeno volume instalados em viveiros de piscicultura povoados ou não com a mesma espécie
| Content Provider | Semantic Scholar |
|---|---|
| Author | Paiva, Patrícia De Mainardes-Pinto, Cleide Schmidt Romeiro Verani, José Roberto Silva, Alexandre Livramento Da |
| Copyright Year | 2008 |
| Abstract | The objective of this study was to assess the growth performance of the Thai tilapia in net cages placed in populated or not populated ponds. The study was carried out in Pindamonhangaba, São Paulo, Brazil, from February to April 2001 (summer / fall). Two 2400 m2 ponds (V1 and V2) were used and six 1m3 cages (TRV1 and TRV2) with Thai tilapia males at densities of 200, 250 and 300 fish/, with one replication by the treatment, were provided for each pond. V2 was also populated with 4800 free male units of Thai tilapia. Initial mean length and weight were 15.90cm and 79.60g. After 76 days of culture, the final mean weight of the TRV1 units was 612.5; 581.5 and 533.3 g, respectively to the employed fish densities, which was significantly higher (p<0.05) than the values exhibited by the fish from TRV2, where only the units kept at the density of 200/m3 reached 500g.The mean weight increase ranged from 6.0 to 7.0g/day (TRV1) and from 5.2 to 5.7g/day (TRV2 and free fish). The apparent feed conversion was around 1.0:1 for the confined fish and 1.3:1 for the free ones; survival rate was over 90% for all the treatments. The final biomass was 809.20 kg/6m3 (V1) and 2,444.60 kg/2400m2 (V2), representing a total net yield 2.7 times higher than in V1. However, the net yield per kilogram of produced fish was a little higher for the tilapias from TRV1 than for the units from TRV2 and the free fish in V2. The results indicate the feasibility of the utilization of cages in populated pond in production system. Key-words: Thai tilapia, cage, populated pond, not populated pond, stocking density, growth performance |
| Starting Page | 79 |
| Ending Page | 88 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| Volume Number | 34 |
| Alternate Webpage(s) | https://www.pesca.sp.gov.br/34_1_79-88.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
