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Effects of diet and feeding time on daily variations in plasma insulin, hepatic c-AMP and other metabolites in a teleost fish,Dicentrarchus labrax L.

Abstract：

:Juvenile sea bass, 1.5 years old, of mixed sex, held on long photoperiods were fed early on the photoperiod and late on the photoperiod, using different diets. Fish fed natural diets showed a daily rhythmicity of plasma insulin, liver c-AMP, plasma glucose, liver glycogen and muscle glycogen content, however, fish fed a commercial diet did not show this daily rhythmicity except for plasma insulin levels. In addition, these fish had significantly lower levels of plasma insulin, liver c-AMP and plasma glycerol than the group fed on the natural diets at similar feeding times. The time of feeding also induced different rhythmicity patterns in hormones and metabolites as well as a significant change in their mean levels. These facts are discussed in relation with the pre-feeding activity and increased appetite exhibited by the fish fed late on the photoperiod and with their implications on fish culture.

journal_name

Fish Physiol Biochem

journal_title

Fish physiology and biochemistry

authors

Perez J,Zanuy S,Carrillo M

doi

10.1007/BF01874796

subject

Has Abstract

pub_date

1988-10-01 00:00:00

pages

191-7

issue

4

eissn

0920-1742

issn

1573-5168

journal_volume

5

pub_type

杂志文章

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