<b>Development of <em>trairão</em> (<em>Hoplias lacerdae</em>) fingerlings in darkness</b> - DOI: 10.4025/actascibiolsci.v28i1.1058
Abstract
Sixty-six trairão (Hoplias lacerdae) fingerlings (average weight of 2.0±0.5 g and total length of 5.8±0.2 cm), trained to accept dry rations, were allotted to six 15-L aquariums, with aeration and controlled temperature (24.0±0.5ºC), in a density of 0.7 juveniles/L, aiming to evaluate the effects of darkness on fish productive performance. The treatments consisted of two photoperiods: 12 hours light: 12 hours dark (12L:12D) and 0 hour light: 24 hours dark (0L:24D), with three replicates. Fingerlings were fed ad libitum a commercial extruded diet (42% CP), twice a day. The aquariums were cleaned daily for excrement withdrawal through siphoning, exchanging ¼ total volume. At the end of the experiment (30 days), weight gain, feed:gain ratio and survival and cannibalism rates were evaluated. The results showed that darkness did not affect the productive performance of trairão juvenilesDownloads
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Published
2008-03-11
How to Cite
Salaro, A. L., Luz, R. K., Zuanon, J. A. S., Sirol, R. N., Sakabe, R., Araújo, W. A. G. de, & Souto, E. F. (2008). <b>Development of <em>trairão</em> (<em>Hoplias lacerdae</em>) fingerlings in darkness</b> - DOI: 10.4025/actascibiolsci.v28i1.1058. Acta Scientiarum. Biological Sciences, 28(1), 47-50. https://doi.org/10.4025/actascibiolsci.v28i1.1058
Issue
Section
Ecology and Limnology
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0.6
2019CiteScore
31st percentile
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0.6
2019CiteScore
31st percentile
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