Data/hora: 15/06/2024 09:22:08

Provedor de dados: | 5
País: | France
Título: | Influence nutritionnelle de la vitamine A et de la nature des lipides sur la morphogenèse de la larve de bar (Dicentrarchus labrax): implicaton de la voie des rétinoïdes
Autores: | Villeneuve, Laure.
Data: | 2005-02-09
Ano: | 2005
Palavras-chave: | Malformations; Genes of development; PUFA; Vitamin A; Sea bass Dicentrarchus labrax; Larvae; Malformations; Gènes du développement; AGPI; Vitamine A; Bar Dicentrarchus labrax; Larves.
Resumo: | The aim of this study was to determine the nutritional effects of vitamin A and PUFA (including EPA and DHA) on sea bass larvae development. An excess of vitamin A in the diet led to malformations affecting the cephalic region linked to an increase of RARgama transcription and the loss of a vertebra when larvae were fed this diet from 8 days post hatch (dph) to 13 dph. A diet containing an excess of PUFA disrupted the development of larvae vertebral column, deformities were correlated to a decrease of RARalpha, RARgama, RXRalpha and BMP4 transcription and an additional vertebra appeared when larvae were fed this diet from 8 dph to 13 dph. A diet containing 31 mg/kg of dry matter of vitamin A and between 1.1 and 2.3% of EPA + DHA allows larvae to develop harmoniously. The period 8-13 dph is crucial for the development as sea bass larvae are very sensible to the level and the nature of nutrients during this interval of time.
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/2005/these-324.pdf
Editor: | Université de Rennes 1
Relação: | http://archimer.ifremer.fr/doc/00000/324/
Formato: | application/pdf