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Archivos de Zootecnia
versión On-line ISSN 1885-4494versión impresa ISSN 0004-0592
Resumen
GARCIA, F.; SANTOS, V.B. y MORAES, F.R.. Efficiency of feed supplementation for nile tilapia using exponential growth model. Arch. zootec. [online]. 2011, vol.60, n.232, pp.1239-1246. ISSN 1885-4494. https://dx.doi.org/10.4321/S0004-05922011000400038.
The aim of this study was to evaluate the applicability of the exponential growth model to study feed supplementation efficiency with mannan oligosaccharide and β-glucan in Nile tilapia raised in net cages. The trial was carried out in a cage fish farm. Tilapia juveniles (initial weigh 25.4 ± 2.04 g) were distributed in 12 cages (2 x 2 x 1.5 m), with 6 m3 volume and stock density of 2500 fish per cage. To evaluate the exponential growth model, a randomized sample of 5% fish was collected for individual biometry in each experimental unit. The results show that none of supplement levels increased the growth ratio of Nile tilapias and the exponential growth model can be used to compare efficiency of different diets.
Palabras clave : Yeast; Oreochromis niloticus; Mannan oligosaccharide; β-glucan.