| Full text | |
| Author(s): |
de Freitas, Thiago Mendes
[1]
;
Lopes, Iva Guidini
[2]
;
Lopes, Tais da Silva
[3]
;
Buzollo, Hellen
[4]
;
Portella, Maria Celia
[2]
Total Authors: 5
|
| Affiliation: | [1] FIPERJ, Praca Fonseca Ramos S-N, BR-24030020 Niteroi, RJ - Brazil
[2] Univ Estadual Paulista, UNESP, Ctr Aquicultura, Via Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP - Brazil
[3] APTA, SAA, Inst Pesca, Av Francisco Matarazzo 455, BR-05100000 Sao Paulo, SP - Brazil
[4] Univ Estadual Paulista, UNESP, Dept Biol Aplicada Agr, Via Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | BOLETIM DO INSTITUTO DE PESCA; v. 45, n. 1 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
The inadequate supply of food during a fish's larval stage, in addition to impairing growth and survival, may lead to the emergence of skeletal anomalies, since essential nutrients are involved in the osteogenic process. The aim of this study was to evaluate the effects of two weaning periods on growth, survival and incidence of skeletal anomalies in pacu larvae (Piaractus mesopotamicus) during its initial development. The larvae (5 dph) were placed in 100L tanks at a density of 12 larvae L-1, during 42 days. The experiment was conducted in a completely randomized design with four feeding treatments: (A) larvae fed only Artemia nauplii; (D) larvae fed only formulated diet; and two treatments with different weaning periods, early at six (W6) and late, at twelve days of feeding (W12). Higher growth indexes and survival rates were observed in A and W12, in comparison to W6 and D. At the end of the experiment, larvae fed Artemia nauplii and subjected to late weaning (W12) presented higher mass gain and survival, in comparison to W6 and D, however the incidence of skeletal anomalies was similar among treatments. It was concluded that the emergence of skeletal anomalies in P. mesopotamicus larvae was not associated to the weaning protocols used in this study and late weaning, at 12 days of feeding, did not impair growth and survival of these larvae. (AU) | |
| FAPESP's process: | 11/18607-3 - Digestive capacity during ontogeny of pacu Piaractus mesopotamicus larvae |
| Grantee: | Thiago Mendes de Freitas |
| Support Opportunities: | Scholarships in Brazil - Doctorate |