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Effect of dietary fish and vegetable oil on the growth performance, body composition, fatty acids profile, reproductive performance and larval resistance in pearl gourami (Trichogaster leeri)

Citation

Mobaraki, MRG and Kenari, AA and Gorji, SB and Esmaeili, M, Effect of dietary fish and vegetable oil on the growth performance, body composition, fatty acids profile, reproductive performance and larval resistance in pearl gourami (Trichogaster leeri), Aquaculture Nutrition, 26, (3) pp. 894-907. ISSN 1365-2095 (2020) [Refereed Article]

Copyright Statement

Copyright 2020 John Wiley & Sons Ltd

DOI: doi:10.1111/anu.13048

Abstract

This study investigated the effect of two lipid sources on reproduction performance and growth in pearl gourami. For this purpose, 180 fish (3.320.25g) were fed with three isoenergetic (19.80) and isonitrogenous diets (480g/kg protein) including FO (80g/kg fish oil), FS (40g/kg fish oil and 40g/kg soybean oil) and SO (80g/kg soybean oil) for 10weeks before maturation. At the end of the trial, there was no significant difference in weight gain, feed conversation ratio and body composition between fish fed FO and FS diets. Individuals fed dietary FO had significantly higher levels of n‐3 long‐chain polyunsaturated fatty acids in the muscle (130.5g/kg lipid) and ovary (140.4g/kg lipid) as compared with those fed SO diet (64.5, 103.6g/kg, respectively) (p <.05). Feeding pearl gourami with FO and FS diets enhanced regarding absolute fecundity, relative fecundity, the fertilization rate, larvae total length and survival at 3day posthatch (p <.05). Also, 17 beta‐estradiol in plasma of fish fed dietary FO (6.2ng/L) was higher than those fed SO diet (1.7ng/L) (p <.05). In conclusion, we suggest FS diet for broodstock nutrition of pearl gourami as a model for asynchronous multi‐batch spawning fish.

Item Details

Item Type:Refereed Article
Keywords:fish oil sparing, hormonal regulation, long-chain PUFA, pearl gourami, reproduction, spawning performance
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Aquaculture fin fish (excl. tuna)
UTAS Author:Esmaeili, M (Mr Moha Esmaeili)
ID Code:139419
Year Published:2020
Web of Science® Times Cited:9
Deposited By:Fisheries and Aquaculture
Deposited On:2020-06-15
Last Modified:2021-01-27
Downloads:0

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