Growth, survival, and whole-body proximate and fatty acid composition of haddock, Melanogrammus aeglefinus L., postlarvae fed a practical microparticulate weaning diet

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DOIResolve DOI: https://doi.org/10.1111/jwas.12462
AuthorSearch for: 1; Search for: 1; Search for: 1
Name affiliation
  1. National Research Council Canada. Aquatic and Crop Resource Development
FormatText
TypeArticle
Journal titleJournal of the World Aquaculture Society
ISSN0893-8849
1749-7345
Pages# of pages: 13
Subjecthaddock; marine; microparticulate; postlarvae; weaning
Abstract
Further development of high-quality feeds for hatchery-reared haddock in the North Atlantic would benefit from a standard formulation that can be used as a reference for hatcheries and laboratory studies. A practical microparticulate diet (PMD) developed and evaluated with newly metamorphosed juvenile haddock, Melanogrammus aeglefinus L., postlarvae is proposed. Survival of fish fed PMD was just as high (88–89%; P > 0.05) as those fed a high-quality imported feed (Biokyowa). Alternatively, fish fed PMD had higher (P < 0.05) final fork lengths (39.5 vs. 35.1 mm), wet weights (851.3 vs. 580.2 mg) and weight gains (1637.2 vs. 1115.7%). No differences (P > 0.05) in whole-body moisture (846–857 g/kg), ash (17–18 g/kg), or protein (101 g/kg) contents were found. Lipid content of fish fed PMD (26 g/kg) was higher (P < 0.05) than those fed Biokyowa (21 g/kg) despite PMD containing 15 g/kg lower dietary lipid, suggesting higher intake and/or lipid retention. The PMD formulation proved to be a highly suitable weaning diet for haddock postlarvae based on high feed acceptance, survival, and fish growth. Given the economic and logistical difficulties associated with importing commercial weaning feeds, this easily produced practical weaning diet has good potential for use by laboratory researchers and farm managers for hatchery-based nutrition research with haddock postlarvae.
Publication date
PublisherWiley
LanguageEnglish
Peer reviewedYes
NRC numberNRC-ACRD-56199
NPARC number23002284
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Record created2017-10-04
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