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Performance of common snook subjected to different feeding frequencies and rates using automatic feeders 86
Herrera,Leandro Amaral; Santos,Ana Paula dos; Sousa,Otávio Mesquita de; Kuhnen,Vanessa Villanova; Sanches,Eduardo Gomes.
Abstract: The objective of this work was to evaluate the growth performance of common snook (Centropomus undecimalis) subjected to different feeding rates and frequencies using automatic feeders. Two experiments of 60 days each were carried out. In the first one, 20 fishes per tank were distributed in three feeding rates of: 5, 10, and 15% body weight per day. In the second experiment, 20 fishes per tank were distributed in nine tanks, in three feeding frequency: once a day, three times a day, and six times a day. Water parameters were maintained at the recommended level for the species. Final weight, body weight gain, specific growth rate, and feed conversion rate did not differ significantly between the 10 and 15% feeding rates. However, both rates...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Centropomus undecimalis; Automatic feeders; Feeding management; Mariculture; Precision aquaculture; Recirculation system.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000101101
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Performance of cobia grown in brackish water and fed with different feeding rates 86
Tosta,Gitonilson Antonio Moreira; Albinati,Ricardo Castelo Branco; Carvalho,Gleidson Giordano Pinto de; Carvalho,Jaciane Vergne de; Souza Filho,José Jerônimo de; Vasconcelos,Fabíola Rios; Kuhnen,Vanessa Villanova; Sanches,Eduardo Gomes.
Abstract: The objective of this work was to evaluate different feeding rates on the productive performance of cobia (Rachycentron canadum) grown in brackish waters. For the experiment, 1,600 juveniles were distributed in 16 enclosures installed in an estuarine pond. Four different feeding rates were evaluated: 1, 3, 5, and 7% live weight (LW) per day. The following performance parameters were assessed: survival, final biomass, specific growth rate, daily weight gain, apparent feed conversion, protein efficiency rate, lipid efficiency rate, and hepatosomatic index. Survival was greater than 80% at all feeding rates. The most efficient feed conversion rate was obtained with the feeding rate of 5% LW per day, which also resulted in better values for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rachycentron canadum; Feeding management; Hepatosomatic index; Mariculture; Shrimp culture.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000101106
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