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Automatic feeders for Nile tilapia raised in cages: productive performance at high feeding frequencies and different rates Arq. Bras. Med. Vet. Zootec.
Oliveira,F.A.; Argentim,D.; Novelli,P.K.; Agostinho,S.M.M.; Agostinho,L.M.; Agostinho,C.A..
ABSTRACT The main goal of modern intensive fish farms should be to increase productivity at a low cost. The automation of fish feeding plays an important role in this scenario since it may improve feed efficiency and reduce organic waste emissions. The aim of this experiment was to provide basic information for the development of feeding techniques using automatic feeders. The experiment was done from September to December, with tilapia weighing 185g, fed 48 meals a day at 22 or 30 minute intervals, with feeding rates of 2, 3 and 4% of live weight. Eighteen 1m3 net cages equipped with automatic feeders were distributed in one pond. During the experimental trial the mean values for dissolved oxygen, pH and temperature were 3.20mg/l, 8.03 and 25.43°C,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Automatic feeding; Feeding management; Oreochromis niloticus; Feed efficiency; Carcass indexes.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000300702
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Productive performance of Nile tilapia (Oreochromis niloticus) fed at different frequencies and periods with automatic dispenser Arq. Bras. Med. Vet. Zootec.
Sousa,R.M.R.; Agostinho,C.A.; Oliveira,F.A.; Argentim,D.; Novelli,P.K.; Agostinho,S.M.M..
The performance of Nile tilapia (Oreochromis niloticus) raised in cages furnished with an automatic dispenser, supplied at different frequencies (once per hour and once every two hours) and periods (daytime, nighttime and both) was evaluated. Eighteen 1.0m³ cages were placed into a 2000m² pond, two meters deep with a 5% water exchange. One hundred and seventy tilapias, with initial weight of 16.0±4.9g, were dispersed into each 1m³ cage and the feed ration was adjusted every 21 days with biometry. Data was collected from March to July (autumn and winter). Significant difference to final weight (P<0.05) among treatments was observed. The increase in feeding frequency improves the productive performance of Nile tilapias in cages and permitted better...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Automatic feeding; Cage; Feed management.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000100027
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