Influence of n-3 highly unsaturated fatty acid deficiency on the lipid composition of broodstock gilthead seabream (Sparus aurata L.) and on egg quality |
| |
| Authors: | C Rodríguez JR Cejas MV Martín P Badía M Samper A Lorenzo |
| |
| Institution: | (1) N.E.R.C. Unit of Aquatic Biochemistry, Department of Biological and Molecular Sciences, University of Stirling, Stirling, FK9 4LA Scotland, U.K;(2) Centro Oceanográfico de Canarias, Instituto Español de Oceanografía, Crta. San Andrés s/n, 38120 Sta. Cruz de Tenerife, Spain;(3) Departamento de Biología Animal, Facultad de Biología, Universidad de La Laguna, 38271 Tenerife, Spain |
| |
| Abstract: | A feeding experiment was conducted on gilthead seabream (Sparus aurata) broodstock to investigate the incidence of n-3 highly unsaturated fatty acids (n-3 HUFA) dietary deficiencies on the lipid composition of female liver, gonads and eggs, in relation to spawning quality. Broodstock were fed a control (C) diet or a n-3 HUFA deficient (D) but linolenic acid rich diet. After 20 weeks of feeding, the results showed that levels of total neutral (TNL) and total polar (TPL) lipids of female gonads and eggs were independent of diet. However the fatty acid composition of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylinositol (PI) of female liver, gonads and eggs in the two groups of fish showed marked differences, reflecting the influence of fatty acid levels in the broodstock diets. This influence was even higher in TNL than in the phospholipid classes examined. In fish fed n-3 HUFA deficient diet, fatty acid composition of TNL of female gonads and eggs reflected the diet more than liver. A higher egg production in broodstock fed C diet (1.8% n-3 HUFA in diet) was extended to spawning quality such as percentages of fertilised and hatched eggs. |
| |
| Keywords: | Gilthead seabream broodstock n-3 fatty acids deficiencies reproduction egg quality total lipid lipid class |
| 本文献已被 SpringerLink 等数据库收录！ |
|
