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| Ramos,Shayenne Elizianne; Carvalho,Aline Ferreira Souza de; Castro,Tássia Flávia Dias; Vasconcelos,Ana Carina Nogueira; Veras,Galileu Crovatto; Mourão Júnior,Carlos Alberto; Murgas,Luis David Solis. |
| Abstract: The objective of this work was to determine the effect of photoperiod on the cannibalism, growth, and body composition of giant trahira (Hoplias intermedius) juveniles. A completely randomized design was employed, with four photoperiods - 0L:24D, 6L:18D, 12L:12D, and 18L:6D, hours of light (L): dark (D) - and four replicates, for a period of 90 days. The analyzed parameters were: cannibalism, growth in weight and length, food consumption, feed conversion, protein efficiency rate, muscle growth, and body composition (moisture, lipid, ash, and crude protein). Fish from the 12L:12D photoperiod showed the highest survival rate and no cannibalism, as well as a great uniformity for length and mass values at the end of the experiment. The best... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hoplias intermedius; Fish; Lipids; Muscle. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600664 |
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| Machado,Gilmara Junqueira; Murgas,Luis David Solis; Palhares,Priscila Cotta; Assis,Isadora de Lima; Castro,Tássia Flávia Dias. |
| ABSTRACT This study aimed to evaluate the effect of using different concentrations (5, 7.5, 10, and 12.5%) of two permeating cryoprotectants, dimethyl sulphoxide (DMSO) and methanol, on Prochilodus lineatus embryos while being subjected to cooling for 2, 4, 6, and 8 h at 4 °C. We analyzed the hatching rate, viable larvae, and counts of hatched and spoiled eggs and those that did not complete their development after cooling. We observed a significant interaction among variables, permeable cryoprotectant concentration, and cooling time, having the increase of these factors caused a reduction in hatching rate. The curimba embryos showed a higher sensitivity to cold at a temperature of 4 °C for 6 and 8 h, directly influencing the production of viable larvae.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture; Biotechnology; Cryopreservation; Eggs; Fish; Larvae. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100155 |
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