Growth curves of Nile tilapia (Oreochromis niloticus) strains cultivated at different temperatures - doi: 10.4025/actascianimsci.v35i3.19443

Autores

  • Vander Bruno Santos Apta -Agencia de Tecnologia dos Agronegócios
  • Edson Assunção Mareco Universidade Estadual Paulista
  • Maeli Dal Pai Silva Instituto de Biociências, UNESP. Botucatu

DOI:

https://doi.org/10.4025/actascianimsci.v35i3.19443

Palavras-chave:

Exponential model, Growth rate, Supreme, GIFT, Red tilapia, Weighted model

Resumo

Growth of Red, GIFT and Supreme Nile tilapia strains were evaluated. Fish were cultivated
in indoor recirculation systems in 0.5 m³ tanks with controlled temperatures of 22, 28 and 30°C. Random
samples of 20 fish from each strain (10 fish tank-1) were weighed at day 7, 30, 60, 90 and 120. Exponential
model (y=AeKx) and Gompertz model (y = Aexp(-Be-Kx)) were fitted and the estimates parameters were
obtained by Weighted Least Squares. At 22°C, Red, GIFT and Supreme strain presented similar growth
and fit of exponential model. GIFT and Supreme strain presented higher growth rate at 30°C of cultivation
when compared to Red strain. Temperature influences weight and age at the inflection point. The
temperature of cultivation influences the growth description of Red, GIFT and Supreme tilapia strains. It
changes the age and weight at inflection point and the qualities of growth model fits, changing the variation
of the batch.

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Publicado

2013-02-08

Edição

Seção

Aquicultura

Como Citar

Growth curves of Nile tilapia (Oreochromis niloticus) strains cultivated at different temperatures - doi: 10.4025/actascianimsci.v35i3.19443. (2013). Acta Scientiarum. Animal Sciences, 35(3), 235-242. https://doi.org/10.4025/actascianimsci.v35i3.19443