Performance, immune response, disease resistance, and gut microbiota of rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) juveniles fed ground leonardite with a high humic substance content

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027162%3A_____%2F24%3AN0000005" target="_blank" >RIV/00027162:_____/24:N0000005 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12520/24:43908090 RIV/62157124:16170/24:43881361 RIV/62157124:16270/24:43881361 RIV/00216208:11110/24:10472363

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0044848623010827" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0044848623010827</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aquaculture.2023.740308" target="_blank" >10.1016/j.aquaculture.2023.740308</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Performance, immune response, disease resistance, and gut microbiota of rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) juveniles fed ground leonardite with a high humic substance content

Popis výsledku v původním jazyce

In the present study, the effects of feeding ground leonardite (LE), which contained 68% of humic substances, to juvenile Oncorhynchus mykiss were examined on overall growth and production performance, feed nutrient digestibility, gut microbiota, health condition, antioxidant status, immune response, and disease resistance. During two consecutive experiments, fish were fed four experimental diets with different LE supplementary levels: 0, 0.5, 1, and 3% of feed mass (LE0, LE0.5, LE1, and LE3, respectively). Firstly, the fish were tested in a growing experiment (GE, n = 300 fish/group, body weight 15.4 ± 2.5 g) for 56 days. Thereafter, these fish (n = 75 fish/ group, body weight 51.9 ± 8.7 g) were exposed to an intraperitoneal infection challenge experiment (IC) with Aeromonas salmonicida subsp. salmonicida for 28 days. In the GE, dietary LE did not affect the growth, production, or health performance of O. mykiss juveniles, although the fish more than tripled their initial body weight. The LE dose had an impact on the digestibility of feed nutrients (dry matter, gross energy, and ash), but not on the protein and lipid digestibility or solid waste outputs. The gut microbial communities were highly diverse across the experimental groups and remained distinct between the control and LE groups. The LE had a dose-dependent effect on the cell composition of the head kidney and peripheral blood leukocytes. The highest LE addition exerted the immune suppressive effect, and a decreased count of immune cells was observed in the LE3.

Název v anglickém jazyce

Performance, immune response, disease resistance, and gut microbiota of rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) juveniles fed ground leonardite with a high humic substance content

Popis výsledku anglicky

In the present study, the effects of feeding ground leonardite (LE), which contained 68% of humic substances, to juvenile Oncorhynchus mykiss were examined on overall growth and production performance, feed nutrient digestibility, gut microbiota, health condition, antioxidant status, immune response, and disease resistance. During two consecutive experiments, fish were fed four experimental diets with different LE supplementary levels: 0, 0.5, 1, and 3% of feed mass (LE0, LE0.5, LE1, and LE3, respectively). Firstly, the fish were tested in a growing experiment (GE, n = 300 fish/group, body weight 15.4 ± 2.5 g) for 56 days. Thereafter, these fish (n = 75 fish/ group, body weight 51.9 ± 8.7 g) were exposed to an intraperitoneal infection challenge experiment (IC) with Aeromonas salmonicida subsp. salmonicida for 28 days. In the GE, dietary LE did not affect the growth, production, or health performance of O. mykiss juveniles, although the fish more than tripled their initial body weight. The LE dose had an impact on the digestibility of feed nutrients (dry matter, gross energy, and ash), but not on the protein and lipid digestibility or solid waste outputs. The gut microbial communities were highly diverse across the experimental groups and remained distinct between the control and LE groups. The LE had a dose-dependent effect on the cell composition of the head kidney and peripheral blood leukocytes. The highest LE addition exerted the immune suppressive effect, and a decreased count of immune cells was observed in the LE3.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Aquaculture

ISSN

0044-8486

e-ISSN

1873-5622

Svazek periodika

580

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

16

Strana od-do

—

Kód UT WoS článku

001109301500001

EID výsledku v databázi Scopus

2-s2.0-85175691387