Ciência Animal Brasileira,
Год журнала:
2025,
Номер
26
Опубликована: Янв. 1, 2025
Abstract
The
aim
of
this
study
was
to
evaluate
the
phytobiotic
potential
oils
from
Copaifera
langsdorffii
(copaiba),
Carapa
guianensis
(andiroba),
Attalea
speciosa
(babassu),
Mauritia
flexuosa
(buriti),
and
Caryocar
brasiliense
(pequi),
as
well
two
types
aqueous
extracts
Terminalia
catappa
(tropical
almond),
alternatives
antibiotics
containing
enrofloxacin
or
oxytetracycline
active
ingredients
in
continental
aquaculture.
Five
species-specific
pathogens
with
high
prevalence
dissemination
fish
farming
systems
were
selected
for
study.
virulence
strains
assessed
using
Gram
staining,
catalase,
hemolytic
activity
tests,
followed
by
inhibition
halo
assays
potential.
All
exhibited
vitro
subjected
evaluations,
where
inhibitory
zones
tested
products
measured,
along
their
bactericidal
bacteriostatic
effects.
Among
evaluated
products,
only
A.
did
not
exhibit
an
against
analyzed
pathogens.
Conversely,
C.
brasiliense,
M.
flexuosa,
guianensis,
langsdorffii,
hot
extract
T.
demonstrated
effects,
yielding
superior
results
(P
>
0.05)
compared
positive
control
oxytetracycline.
proved
be
competitive
ingredients,
showing
antibacterial
action
Aeromonas
hydrophila,
caviae,
jandaei,
Streptococcus
agalactiae.
Frontiers in Microbiology,
Год журнала:
2023,
Номер
13
Опубликована: Янв. 26, 2023
Introduction
Aeromonads
are
ubiquitous
in
aquatic
environments
and
several
species
opportunistic
pathogens
of
fish.
Disease
losses
caused
by
motile
Aeromonas
species,
particularly
hydrophila
,
can
be
challenging
intensive
aquaculture,
such
as
at
striped
catfish
(
Pangasianodon
hypophthalmus
)
farms
Vietnam.
Outbreaks
require
antibiotic
treatments,
but
their
application
is
undesirable
due
to
risks
posed
resistance.
Vaccines
an
attractive
prophylactic
they
must
protect
against
the
prevalent
strains
responsible
for
ongoing
outbreaks.
Methods
This
present
study
aimed
characterize
A.
associated
with
mortalities
culture
Mekong
Delta
a
polyphasic
genotyping
approach,
view
developing
more
effective
vaccines.
Results
During
2013–2019,
345
presumptive
spp.
isolates
were
collected
eight
provinces.
Repetitive
element
sequence-based
PCR,
multi-locus
sequence
typing
whole-genome
sequencing
revealed
most
suspected
202
belong
ST656
n
=
151),
which
corresponds
closely-related
dhakensis
lesser
proportion
belonging
ST251
51),
hypervirulent
lineage
(vAh)
already
causing
concern
global
aquaculture.
The
vAh
from
outbreaks
possessed
unique
gene
sets
compared
published
genomes,
including
antibiotic-resistance
genes.
sharing
resistance
determinants
sulphonamides
sul1
trimethoprim
dfrA1
suggests
similar
selection
pressures
acting
on
lineages.
earliest
isolate
(a
2013)
lacked
genes,
suggesting
relatively
recent
acquisition
selection,
this
underscores
need
reduce
antibiotics
use
where
possible
prolong
effectiveness.
A
novel
PCR
assay
was
designed
validated
distinguish
strains.
Discussion
highlights
first
time
zoonotic
that
cause
fatal
human
infection,
emerging
pathogen
aquaculture
Vietnam,
widespread
distribution
septicaemia
catfish.
It
also
confirms
have
been
since
least
2013.
Appropriate
should
included
vaccines
prevent
threat
Food Chemistry Advances,
Год журнала:
2024,
Номер
5, С. 100750 - 100750
Опубликована: Июнь 9, 2024
The
distinct
fishy
odors
found
in
fish
products
are
mainly
linked
to
the
surrounding
environment
(eg,
algae,
water,
and
feed).
These
odor
compounds
can
be
intensified
during
processing
storage
as
a
result
of
lipid
autoxidation,
enzymatic
reactions,
degradation
TMAO,
Strecker
degradation.
For
this
purpose,
area
nanoapplication
methods
is
attracting
attention
because
their
potential
play
crucial
role
maintaining
quality
properties
fish,
allowing
inhibition
formation
unpleasant
volatile
through
oxidation
aroma
precursors,
such
fatty
acids.
nanofibers
NPs
allow
carrying
fragrances
flavors,
resulting
improved
performance
EOs
or
masking
that
generated
oxidation.
Furthermore,
nanovesicles
containing
flavor
from
microalgae
extend
chemical
decomposition
with
nanocoating
methods.
combination
nanomaterials
could
one
promising
ways
mask
bitter
taste
off-odor
delay
spoilage
future
trends.
In
systematic
review,
applications
nanotechnology
recent
papers
published
over
last
10
years
related
were
discussed.
Pathogens,
Год журнала:
2024,
Номер
13(6), С. 465 - 465
Опубликована: Май 31, 2024
Aeromonas
dhakensis
is
increasingly
recognised
to
be
an
important
pathogen
responsible
for
disease
losses
in
warm-water
aquaculture
and,
similar
several
other
species,
it
can
infect
humans.
Knowledge
of
A.
accumulating,
but
this
species
remains
relatively
under-investigated
compared
its
close
relative,
hydrophila.
The
significance
may
have
been
overlooked
events
aquatic
animals
due
issues
with
reliable
identification.
Critical
appreciating
the
importance
application
dependable
molecular
tools
that
enable
accurate
identification
and
discrimination
from
hydrophila
motile
aeromonads.
This
review
aims
synthesise
key
literature
on
dhakensis,
particularly
relevance
aquaculture,
including
knowledge
bacterium
derived
case
studies
hosts.
Identification
methods
strain
phylogeny
are
discussed,
detection
prompt
diagnosis
distinguishing
strains
heightened
virulence.
Increasing
evidence
suggests
more
virulent
than
correct
required
determine
zoonotic
risks
posed,
which
includes
concerns
antibiotic-resistant
strains.
provides
impetus
improve
future
screen
collections
presumptive
spp.
retrospectively
reveal
true
prevalence
impact
environment,
healthcare
settings.
Scientific Reports,
Год журнала:
2023,
Номер
13(1)
Опубликована: Июль 13, 2023
Species
diversification
from
major
to
minor
carps
for
their
sturdiness
and
initial
higher
growth,
also
a
quest
antibiotic-free
aqua
farming
in
the
subcontinent,
mandates
search
evaluation
of
alternatives.
An
experiment
was
performed
investigate
potential
fructooligosaccharide
(FOS)
Bacillus
subtilis
(BS)
(alone
or
as
synbiotics)
promoting
growth
immunity
against
infections
Labeo
fimbriatus
fingerlings.
Six
iso-nitrogenous
iso-lipidic
diets
containing
combinations
two
levels
FOS
(0%
0.5%)
three
BS
(0,
104,
106
CFU/g
feed)
were
fed
fish
60
days.
At
end
feeding
trial,
twenty-four
each
group
injected
intra-peritoneally
with
pathogenic
strain
Aeromonas
hydrophila
O:18
test
immunoprotective
efficacy
supplements
bacterial
infection.
BS,
but
not
FOS,
significantly
improved
(P
<
0.05)
feed
utilisation
attributes
like
percentage
weight
gain
(PWG),
specific
rate
(SGR)
conversion
ratio
(FCR).
There
interactive
effects
on
PWG,
SGR
FCR;
however,
additive
nature.
These
beneficial
alone
combination
corroborated
by
increased
protease
activity,
microvilli
density
diameter
number
goblet
cells.
Overall
included
erythrocyte
(RBC),
hemoglobin
(Hb),
total
protein
globulin
levels.
Total
leucocyte
(WBC)
count
immunological
parameters
respiratory
burst
activity
leucocytes
(NBT
reduction),
lysozyme
albumin:
post-challenge
survival
both
dietary
yielded
highest
improvement
these
parameters.
Synergistic
indicate
that
0.5%
is
optimal
improve
utilisation,
immune
functions,
disease
resistance
L.
Acta veterinaria Scandinavica,
Год журнала:
2023,
Номер
65(1)
Опубликована: Фев. 14, 2023
Streptococcal
infections
are
one
of
the
main
causes
fish
disease.
During
last
decade,
Streptococcus
iniae
has
become
most
important
aquatic
pathogens
worldwide,
causing
high
losses
in
marine
and
freshwater
finfish.
Clinical
signs
farmed
include
loss
appetite,
lethargy
grouping
at
bottom
tank.
Gross
changes
comprise
darkening
skin
haemorrhage
basis
fins
opercula.
To
date,
S.
been
isolated
from
several
wild
species
but
never
European
eel
(Anguilla
anguilla).
In
Europe,
production
aquaculture
is
around
4500
tonnes
Italy
third
largest
producer.
This
communication
represents
first
report
an
outbreak
infection
eels.
Aquaculture International,
Год журнала:
2024,
Номер
32(6), С. 7929 - 7951
Опубликована: Май 22, 2024
Abstract
This
study
aimed
to
assess
the
effects
of
dietary
Cyanus
depressus
(CD)
extract
on
rainbow
trout
(
Oncorhynchus
mykiss
)
physiology
and
health.
Fish
with
an
average
weight
3.29
±
0.34
g
were
allocated
four
feeding
groups,
receiving
diets
containing
CD
at
doses
0
(Control),
0.5
(CD05),
1
(CD1),
2
(CD2)
kg
−1
for
a
period
60
days.
Results
revealed
significant
improvements
in
final
body
weight,
gain,
specific
growth
rate
groups
supplemented
g/kg
extract.
Lipase
activity
increased
notably
fish
fed
CD0.5,
CD1,
CD2
diets.
The
CD1
group
exhibited
highest
trypsin
activity,
while
displayed
amylase
activity.
Analysis
gene
expression
levels
superoxide
dismutase
(SOD),
catalase
(CAT),
glutathione
peroxidase
(GPx)
showed
marked
increases
across
all
compared
control,
most
enhancement
observed
Significant
variations
immunity-related
genes
among
treatments,
tumor
necrosis
factor-alpha
(TNF-α)
interleukin-1
beta
(IL-1β)
found
diet
enriched
immune-related
was
more
prominent
than
control
group.
Notably,
extract,
heat
shock
protein
70
(HSP70)
group,
decreased
CD05
remained
statistically
unchanged
control.
Additionally,
supplementation
altered
composition
abundance
intestinal
microbiota
trout.
In
conclusion,
our
suggests
that
has
potential
enhancing
various
physiological
health
aspects
trout,
particularly
when
g/kg.
Reviews in Aquaculture,
Год журнала:
2024,
Номер
16(4), С. 1996 - 2009
Опубликована: Июнь 25, 2024
Abstract
This
study
aimed
to
conduct
a
systematic
review
and
meta‐analysis
evaluating
the
inclusion
of
β‐glucan
in
aquaculture
animal
diets
its
impact
on
their
health
outcomes.
Relevant
studies
were
identified
from
Scopus
Web
Science
databases.
A
total
82
primary
published
between
1996
2024
reviewed,
which
70
included
meta‐analysis.
The
results
revealed
that
application
animal's
significantly
enhanced
specific
growth
rate
(SGR;
mean
effect,
g
=
2.71;
p
<
0.001),
feed
conversion
ratio
(FCR;
−3.88;
0.0001)
lowered
mortality
after
exposure
pathogens.
Likewise,
had
positive
influence
(
innate
immune
parameters
(lysozyme
phagocyte
activity,
NBT,
ACH50,
IgM).
found
effects
β‐glucans
varied
among
marine
freshwater
fish
where
fishes
2.05–6.57)
exhibit
better
performance.
also
negative
correlation
fish's
response
trophic
level,
suggesting
with
higher
levels
may
be
less
efficient
at
absorbing
this
bio‐stimulant.
Even
though
there
high
heterogeneity
I
2
73%–97%,
0.05)
due
diversity
tested
organisms
publication
bias,
our
model
findings
are
valid.
suggest
dietary
can
have
beneficial
responses
especially
for
species.
validity
these
observations
needs
confirmed
by
further
prospective
studies.
