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19521

Effect of weaning time on growth, body composition, fatty acids and digestive enzyme activities of European seabass (Dicentrarchus labrax) larvae

Article

Last updated: 01 Jan 2025

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Tags

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Abstract

The present study addressed to investigate early, 25 days post hatching (dph) and late co-feeding time; 35 dph on European seabass (Dicentrarchus labrax) larvae. Initially, larvae were reared from the 5thdph in six glass aquaria, and each aquarium contained 200 larvae.The results revealed higher, but no significant (P > 0.05) effect on larval final weight, weight gain, average daily gain and specific growth rate when larvae were co-feed at 35 dph. However, the highest survival rate was noticed then larvae were co-fed from 25 dph. Growth parameters showed significant (P < 0.05) effect on final gainsof both total and standard lengthswhen larvae were started co-feeding at 25 dph. The water quality showed no significant (P > 0.05) differences between treatments. However, significant (P < 0.05) effect was revealed on total culturable bacteria - and bacilli counts in water samples at 45 dph,when larvae were co-fed at 25 dph, but no significant (P > 0.05) effect was noticed on Staphylococcus counts at 45dph of larvae co-fed from 35 dph. Digestive enzymes analysis revealed that lipase activity was not significantly (P > 0.05) affected, however, a significant (P < 0.05) increase in amylase activity was revealed when larvae co-fed at 35 dph.

DOI

10.21608/ejabf.2018.19521

Keywords

Weaning, Dicentrarchus labrax, European seabass, growth rate, nutrition, Enzymes

Authors

First Name

Ahmed

Last Name

Salem

MiddleName

Mohamed

Affiliation

Fish Physiology Laboratory, Fisheries Division, National Institute of Oceanography and Fisheries (NIOF), Ministry of Scientific Research, Alexandria, Egypt.

Email

drsalemniofaqua@gmail.com

City

Alexandria

Orcid

0000-0002-5904-3633

First Name

Shaimaa

Last Name

M. Hebalah

MiddleName

-

Affiliation

Fish Nutrition Lab., Aquaculture Division, NIOF, Alexandria, Egypt.

Email

-

City

-

Orcid

-

First Name

Hassan

Last Name

A.H. Ibrahim

MiddleName

-

Affiliation

Marine Microbiology Lab., Marine Environment Division, NIOF, Alexandria, Egypt.

Email

-

City

-

Orcid

-

First Name

Einar

Last Name

Ringø

MiddleName

-

Affiliation

Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiTThe Arctic University of Norway, Tromsø, Norway

Email

einar.ringo@uit.no

City

-

Orcid

0000-0002-4940-5688

Volume

22

Article Issue

5 (Special Issue)

Related Issue

3720

Issue Date

2018-11-01

Receive Date

2018-09-15

Publish Date

2018-11-01

Page Start

219

Page End

230

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_19521.html

Detail API

https://ejabf.journals.ekb.eg/service?article_code=19521

Order

15

Type

Original Article

Type Code

103

Publication Type

Journal

Publication Title

Egyptian Journal of Aquatic Biology and Fisheries

Publication Link

https://ejabf.journals.ekb.eg/

MainTitle

Effect of weaning time on growth, body composition, fatty acids and digestive enzyme activities of European seabass (Dicentrarchus labrax) larvae

Details

Type

Article

Created At

22 Jan 2023