End-of-season supplementary feeding in European carp ponds with appropriate plant protein and carbohydrate combinations to ecologically boost productivity: Lupine, rapeseed and, triticale

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F23%3A43906585" target="_blank" >RIV/60076658:12520/23:43906585 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.aquaculture.2023.739906" target="_blank" >https://doi.org/10.1016/j.aquaculture.2023.739906</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aquaculture.2023.739906" target="_blank" >10.1016/j.aquaculture.2023.739906</a>

Result language

angličtina

Original language name

End-of-season supplementary feeding in European carp ponds with appropriate plant protein and carbohydrate combinations to ecologically boost productivity: Lupine, rapeseed and, triticale

Original language description

The present study investigated end-of-season (July-September) supplementary feeding strategies for European fishponds (carp farming), which suffer from collapsed natural food base (protein availability). Treatment ponds receiving white lupine (Lupinus albus), resulted in higher polyunsaturated fatty acids (PUFA) content (276.1 mg n - 3 PUFA 100 g-1) in skinless fillet of Cyprinus carpio than control ponds receiving triticale (179.5 mg n - 3 PUFA 100 g-1). Despite lupine being richer in nitrogen (N) and phosphorus (P) than triticale, eutrophication was likely suppressed in treatment ponds. Treatment ponds (-120 g acid detergent fiber, ADF kg-1 lupine) had higher water transparency and lower water column P than control ponds (-31 g ADF kg-1 triticale). Surprisingly, triticale (8.5% digestible protein; low DIAASLYS 36%) resulted in similar yield (-1 ton ha-1) as lupine (26.5% digestible protein; higher DIAASLYS 52%, but low DIAASMET 32%). Therefore, protein quality (methionine) deficiency in lupine was investigated. It was balanced iso-nitrogenously (38% crude protein) with rapeseed expeller meal (Brassica napus): diets T1 (only lupine; Met 0.9% of protein) -* T2 (75% lupine: 25% rapeseed; Met 1.2% of protein) -* diet T3 (50% lupine: 50% rapeseed; Met 1.4% of protein). A gradual improvement in yield, N and P retention values was observed from T1 to T3 but it did not exceed a low protein (16% crude protein) &apos;control&apos; diet (only triticale; Met 1.9% of protein). Nutrient conversion to fish biomass (protein efficiency ratio and P: N retention ratio) seemed highest in &apos;control&apos; followed by &apos;T3&apos;. This could be attributed to starch-mediated protein sparing effect or high organic matter digestibility of triticale (ADCNFE 76%; ADCOM 72%). Which is lacking in either lupine or rapeseed (ADCNFE &lt; 1%; ADCOM &lt; 34%) due to predominance of fibrous carbohydrates (non-starch polysaccharides, NSP). However, in ponds, they may still enhance the food web. In absence of starch, higher ADF influx in pond carp gut may halve absorption of n-3 PUFA from zooplankton. The study concludes end-of-season supplementary feeding with high DIAASMET, LYS protein combinations (e.g., lupinerapeseed) and inclusion of starch sources (e.g., triticale) could achieve higher yield and nutrient efficiency in ponds. Most proteinaceous plant feedstuff are rich in NSP or ADF and may contribute to improving pond water quality or food web. Balanced supplementary feeds (e.g., 50% triticale +25% lupine +25% rapeseed expeller), that feed both fish (starch, optimum DIAASprotein) and pond (NSP, ADF) are suggested.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40103 - Fishery

Project

<a href="/en/project/QK22010177" target="_blank" >QK22010177: Optimalisation of supplemental feeding and management of pond aquaculture</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

Aquaculture

ISSN

0044-8486

e-ISSN

1873-5622

Volume of the periodical

577

Issue of the periodical within the volume

neuvedeno

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

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UT code for WoS article

001050863100001

EID of the result in the Scopus database

2-s2.0-85166006500