L-Tryptophan Mitigates Cannibalism and Improves Growth of Asian seabass, Lates calcarifer Reared in a RAS System

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F23%3A43906737" target="_blank" >RIV/60076658:12520/23:43906737 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/aquacj3030014" target="_blank" >https://doi.org/10.3390/aquacj3030014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/aquacj3030014" target="_blank" >10.3390/aquacj3030014</a>

Result language

angličtina

Original language name

L-Tryptophan Mitigates Cannibalism and Improves Growth of Asian seabass, Lates calcarifer Reared in a RAS System

Original language description

Severe cannibalism can result in a significant loss of productivity during the nurseryphase of Asian seabass, Lates calcarifer. The present study aimed to determine the effect of dietarytryptophan on growth, feed utilization, cannibalism, survival, and muscle proximate compositionof Asian seabass juveniles (initial size, 2.77 0.04 cm in length and 0.29 0.01 g in weight) in arecirculating aquaculture system (RAS) at different stocking densities. The tryptophan levels wereset at 0.41% (control diet, standard dosage for normal growth and survival of Asian seabass), 1.00%(Diet 1), and 1.50% (Diet 2), while the stocking densities were set at 0.5 ind./L and 1.5 ind./L. Theresults indicated that dietary supplementation with L-tryptophan (TRP) and fish stocking densityhad a significant effect on fish growth parameters, feed utilization, cannibalism, survival, and musclelipid content (p &lt; 0.05) over the 45-day trial. The maximum length, weight, WG, and SGR were11.64 0.35 cm, 22.93 2.67 g, 22.64 2.67 g, and 9.63 0.27%, respectively, in the fish fed Diet 2,and 11.35 0.22 cm, 24.38 1.28 g, 24.09 1.28 g, and 9.82 0.11% at a 1.5 ind./L stocking density.The lower FCR (0.81 0.04) and higher PER (2.98 0.16) ensured better utilization of Diet 1 than theother diets. Moreover, significant interaction effects between diet and stocking density were observedin total yield, cannibalism, and survival of the Asian seabass. Significantly higher survival rates of76.11 3.90% in the Diet 1 group and 76.28 2.88% in 0.5 ind./L stocking density were obtained,which is promising. The study concludes that dietary supplementation with 1.00% TRP was effectivein reducing cannibalism and increasing the survival of the Asian seabass nursery reared in RAS ata lower stocking density (i.e., 0.5 ind./L), whereas 1.50% supplemental TRP at a higher stockingdensity (i.e., 1.5 ind./L) significantly increased the cannibalism and growth, which in turn reducedthe survival rate.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

40103 - Fishery

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Aquaculture journal

ISSN

2673-9496

e-ISSN

2673-9496

Volume of the periodical

3

Issue of the periodical within the volume

neuvedeno

Country of publishing house

CH - SWITZERLAND

Number of pages

13

Pages from-to

168-180

UT code for WoS article

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EID of the result in the Scopus database

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