Feeding value of low opportunity cost biomasses (agri-food by-products) for development of circular pond fish feeds: An evaluation with common carp (Cyprinus carpio)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F25%3A43909677" target="_blank" >RIV/60076658:12520/25:43909677 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.aqrep.2025.102753" target="_blank" >https://doi.org/10.1016/j.aqrep.2025.102753</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aqrep.2025.102753" target="_blank" >10.1016/j.aqrep.2025.102753</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Feeding value of low opportunity cost biomasses (agri-food by-products) for development of circular pond fish feeds: An evaluation with common carp (Cyprinus carpio)

Popis výsledku v původním jazyce

In many cases, prior to their inclusion in feed, food system by-products need some sort of refinement. Many options are being explored on how these by-products could aid in direct re-generation of food with the shortest value chain. In this study, we hypothesized that common carp raised semi-intensively in European fishponds could convert waste resources to food directly. The 30 % ingredient replacement method was used to evaluate the digestibility of 12 local waste resources of plant origin as candidates for &apos;circular feed ingredients&apos; for feeding pond fish. It was evident from the results that protein digestion (&gt;70 %) is not an issue, even showing similarities between pre-treated resources (brewery wastes) and non-pre-treated resources (oilseed expellers or legumes) - but lysine or methionine decide from 20 % - 49 % utilization of digested protein from those ingredients. It is therefore, recommended that complementary combination of ingredients be explored to overcome limiting DIAAS in natural food base in ponds. In this case, rapeseed expeller and barley distillers&apos; grain seem to be closest candidates to fix the lysine and methionine limitation in natural pond food base. Microbial/enzymatic/mechanical pre-processed ingredients such as extract of sugar beet, brewery wastes, bakery or extruded breakfast cereals have low pollution potential (P bioavailability 50-80 %) - contrary to proteinaceous resources (oilseed expellers or broken legumes) which had P bioavailability &lt;= 25 % (except pea). Bakery or breakfast cereals discards are novel sources of digestible energy for pond fish (similar to 400 kcal 100 g(-1)). Given that NDF:ADF ratio (&gt;2:1) allow for easy fermentation in gut, besides possibly laced with microbial enzymes or some pre-hydrolysis, the undigested fibers in sugar beet, legumes, or oilseed expeller (AD carbohydrate 1-20 %) could boost pond food web through microbial upcycling. This study highlights the possibility of developing circular, less-refined semiintensive pond fish feeds &quot;commercially&quot;. Such feed could enhance resource use efficiency at food-system level.

Název v anglickém jazyce

Feeding value of low opportunity cost biomasses (agri-food by-products) for development of circular pond fish feeds: An evaluation with common carp (Cyprinus carpio)

Popis výsledku anglicky

In many cases, prior to their inclusion in feed, food system by-products need some sort of refinement. Many options are being explored on how these by-products could aid in direct re-generation of food with the shortest value chain. In this study, we hypothesized that common carp raised semi-intensively in European fishponds could convert waste resources to food directly. The 30 % ingredient replacement method was used to evaluate the digestibility of 12 local waste resources of plant origin as candidates for &apos;circular feed ingredients&apos; for feeding pond fish. It was evident from the results that protein digestion (&gt;70 %) is not an issue, even showing similarities between pre-treated resources (brewery wastes) and non-pre-treated resources (oilseed expellers or legumes) - but lysine or methionine decide from 20 % - 49 % utilization of digested protein from those ingredients. It is therefore, recommended that complementary combination of ingredients be explored to overcome limiting DIAAS in natural food base in ponds. In this case, rapeseed expeller and barley distillers&apos; grain seem to be closest candidates to fix the lysine and methionine limitation in natural pond food base. Microbial/enzymatic/mechanical pre-processed ingredients such as extract of sugar beet, brewery wastes, bakery or extruded breakfast cereals have low pollution potential (P bioavailability 50-80 %) - contrary to proteinaceous resources (oilseed expellers or broken legumes) which had P bioavailability &lt;= 25 % (except pea). Bakery or breakfast cereals discards are novel sources of digestible energy for pond fish (similar to 400 kcal 100 g(-1)). Given that NDF:ADF ratio (&gt;2:1) allow for easy fermentation in gut, besides possibly laced with microbial enzymes or some pre-hydrolysis, the undigested fibers in sugar beet, legumes, or oilseed expeller (AD carbohydrate 1-20 %) could boost pond food web through microbial upcycling. This study highlights the possibility of developing circular, less-refined semiintensive pond fish feeds &quot;commercially&quot;. Such feed could enhance resource use efficiency at food-system level.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

<a href="/cs/project/QK22010177" target="_blank" >QK22010177: Optimalizace přikrmování a managementu rybniční akvakultury</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Aquaculture Reports

ISSN

2352-5134

e-ISSN

—

Svazek periodika

42

Číslo periodika v rámci svazku

neuvedeno

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

nestránkováno

Kód UT WoS článku

001458089500001

EID výsledku v databázi Scopus

2-s2.0-105000520911