Combined intestinal microbiota and transcriptomic analysis to investigate the effect of different stocking densities on the ability of Pacific white shrimp (Litopenaeus vannamei) to utilize Chlorella sorokiniana
Animal nutrition,
Год журнала:
2024,
Номер
18, С. 203 - 219
Опубликована: Апрель 26, 2024
Aiming
to
investigate
the
impact
of
different
stocking
densities
on
ability
Pacific
white
shrimp
(Litopenaeus
vannamei)
utilize
Chlorella
sorokiniana
(CHL),
a
3
×
2
factorial
design
experiment
was
used
in
this
study.
Specifically,
fed
with
two
dietary
protein
sources
(fishmeal
(FM)
and
CHL)
at
low
(LSD,
100
per
m³),
medium
(MSD,
200
m³)
high
(HSD,
300
for
8
weeks.
The
growth
performance
resistance
Vibrio
parahaemolyticus
(1.0
107
CFU
mL)
decreased
increase
density,
but
CHL
improved
result.
Differences
between
FM
groups
V.
were
significant
only
under
high-density
conditions
(P
<
0.05).
Significant
interactions
density
source
found
activities
catalase
(CAT),
superoxide
dismutase
(SOD)
phenol
oxidase
(PO),
contents
malondialdehyde
(MDA)
hepatopancreas
intestinal
amylase,
most
which
significantly
Analysis
16S
rDNA
sequencing
showed
that
increased
alpha
diversity
microbiota,
inhibited
colonization
pathogenic
bacteria
enhanced
abundance
beneficial
bacteria.
Transcriptomic
results
densities,
differentially
expressed
genes
(DEGs)
vs
group
mostly
upregulated
primarily
enriched
immune
metabolic
related
pathways
including
Toll,
deficiency
(Imd)
glycolysis-gluconeogenesis
pathways.
Pearson
correlation
analysis
revealed
top
ten
genus
level
markedly
DEGs,
also
more
detected
situations.
In
conclusion,
has
great
potential
as
novel
intensive
farming
shrimp.
Язык: Английский
Expanding the Ingredient Basket in Aquaculture: Growth Performance and Feed Utilization of Australian Hybrid Abalone (Haliotis laevigata × H. rubra) Fed Methanotrophic Single Cell Protein
Aquaculture Nutrition,
Год журнала:
2025,
Номер
2025(1)
Опубликована: Янв. 1, 2025
There
is
growing
interest
in
the
use
of
single
cell
proteins
(SCPs)
derived
from
methanotrophic
bacteria
for
inclusion
aquafeed
to
reduce
reliance
on
other,
potentially
less
sustainable
proteins.
This
two‐part
experiment
aimed
investigate
first
(i)
dose
effect
replacing
soy
protein
concentrate
with
SCP
Australian
hybrid
abalone
diets
(
Haliotis
laevigata
rubra
)
and
second,
(ii)
potential
improved
palatability
by
using
commercially
produced
liquid
hydrolysate
(PH).
was
assessed
a
2
×
factorial
experimental
design.
The
were
formulated
be
iso‐proteic
(~40%
crude
as
fed)
iso‐energetic
(~18
MJ
kg
−1
fed).
(SCP
0%,
5%,
10%,
20%,
0%
+
PH,
20%
PH)
fed
(~9.25
g
initial
weight)
once
daily
evening
94
days
apparent
satiation.
growth
performance
feed
utilization
up
10%
comparable
control;
however,
there
significant
reduction
most
parameters
at
highest
20%.
In
second
experiment,
decline
measured
energy
retention
SCP,
concomitantly
lower
biological
value.
Positively,
improvements
digestibility
diet
inclusion.
no
impact
PH
or
intake.
No
effects
observed
digestive
enzyme
activity
α
‐amylase,
lipase,
trypsin)
examined
among
treatments.
Considering
these
results
collectively,
maximum
recommended
meal
should
abalone.
Reasons
may
related
palatability;
this
remains
fully
confirmed.
Язык: Английский
The ‘One Nutrition’ approach: connecting crop production, animal nutrition and human nutrition
Italian Journal of Animal Science,
Год журнала:
2025,
Номер
24(1), С. 978 - 987
Опубликована: Апрель 17, 2025
Язык: Английский
The Fate of Dietary Tryptophan in Fish: Unveiling Its Sources, Transport, Metabolism, and Multifaceted Impacts
Journal of Nutrition,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 1, 2025
Язык: Английский
Using of dry biomass of methanotrophic bacteria for enrichment of starter artificial feeds when growing juveniles of broad whitefish Coregonus nasus (Pallas, 1776)
Polina Zenkovich,
Aleksandr Litvinenko,
Ruslan Zenkovich
и другие.
BIO Web of Conferences,
Год журнала:
2024,
Номер
118, С. 01011 - 01011
Опубликована: Янв. 1, 2024
A
research
was
conducted
to
study
the
effect
of
starter
artificial
feeds
enriched
with
dry
biomass
methanotrophic
bacteria
(
Methylococcus
capsulatus
)
and
a
complex
fatty
acids
on
growth,
survival,
fish
productivity,
feed
conversion
efficiency
biochemical
composition
tissues
juveniles
broad
whitefish
Coregonus
nasus
).
Using
an
experimental
diet
(10
%
microbial
protein,
linseed
oil,
premix
drug
“Arfit”)
made
it
possible
increase
growth
rate
whitefish.
The
final
weight
in
experiment
17.2%
higher
than
control.
condition
factor
3.1%
compared
control,
productivity
13.0%
higher,
there
4.0
decrease
costs
for
ichthyomass
gain.
At
end
experiments
content
crude
fat
protein
by
12.4%
3.0%,
respectively,
total
amino
whitefish,
when
were
added
diet,
increased
5.4%
Язык: Английский