Data/hora: 12/06/2024 14:18:58

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Effects of rapeseed meal-glucosinolates on thyroid metabolism and feed utilization in rainbow trout
Autores: | Burel, Christine; Boujard, Thierry; Kaushik, Sadasivam; Boeuf, Gilles; Mol, K; Van Der Geyten, S; Darras, V; Kuhn, E; Pradet Balade, B; Querat, B; Quinsac, A; Krouti, M; Ribaillier, D.
Data: | 2001-12
Ano: | 2001
Palavras-chave: | Rainbow trout; Iodine; TSH; Deiodinase activity; Thyroid function; Growth; Glucosinolates; Rapeseed.
Resumo: | Two rapeseed meals (RM1 and RM2), containing glucosinolates at a concentration of 26 and 40 mumol/g, respectively, were incorporated at increasing levels (10, 20, and 30% for RM1 and 30 and 50% for RM2) in diets of juvenile rainbow trout. Disturbances in the thyroid axis appeared after 14 days of feeding (with a dietary incorporation level of 10%). The dietary supplementation with T-3 or iodine induced an increase in plasma T-3 levels, compared to that in fish fed the RM diets, and reduced the deleterious effect of RM on growth. When trout were reared in seawater, there was also a slight increase in thyroid hormone levels. TSH treatment had no effect on the thyroid hormone plasma levels. The incorporation of 30% of RM1, which induced a lower dietary content of toxic compounds than RM2, led to a rapid decrease of plasma T-4 and T-3 levels, but growth was affected only after 6 months of feeding. During these studies, the deiodinase activities responded in a complex manner to restore plasma and tissue levels of T-3.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2001/publication-677.pdf

DOI:10.1006/gcen.2001.7723

Editor: | Elsevier
Relação: | http://archimer.ifremer.fr/doc/00000/677/
Formato: | application/pdf
Fonte: | General and Comparative Endocrinology (0016-6480) (Elsevier), 2001-12 , Vol. 124 , N. 3 , P. 343-358
Fonte: | 2001 Elsevier Science (USA). All rights reserved