Marine Science and Technology Bulletin,
Год журнала:
2023,
Номер
12(2), С. 162 - 171
Опубликована: Июнь 20, 2023
The
Russian
sturgeon
(Acipenser
gueldenstaedtii)
species
is
in
high
demand
owing
to
its
valuable
caviar.
Therefore,
it
danger
of
extinction.
Since
the
reaches
sexual
maturity
late
life
cycle,
this
has
a
economic
cost
for
farmers.
However,
can
be
reduced
with
an
environmentally
friendly
system
called
biofloc
technology.
This
study
compared
growth
performance
and
health
indicators
groups
using
different
carbon
sources
such
as
starch
(BS),
molasses
(BM)
dextrose
(BD).
In
60-day
study,
fish
average
initial
weight
106.44±5.79
g
were
stocked
tanks
at
density
21
fish/tank
(0.4
m3/tank).
water
temperature
was
set
19
℃
degrees
throughout
study.
On
30th
60th
days
experiment,
weighted
measure
parameters
sampled
immune
indices.
No
mortality
observed
any
group
A
between
comparison
gain
revealed
that
BS
BM
(105.51±2.26;
100.50±2.18)
performed
better
than
control
(BC,
without
external
sources)
BD
(95.90±2.09;
87.36±2.18)
(P<0.05).
Furthermore,
FCR
SGR
calculated
from
data
obtained
end
shows
statistically
more
effective
other
groups.
Moreover,
NBT,
lysozyme
myeloperoxidase
enzyme
activities
indicated
all
BFT
had
stronger
According
results,
immune-enhancing
effect
determined,
reported
are
suitable
use
terms
SGR,
they
result
production.
PLoS ONE,
Год журнала:
2024,
Номер
19(6), С. e0299480 - e0299480
Опубликована: Июнь 25, 2024
This
study
evaluates
the
impact
of
dietary
supplementation
blue-green
alga
Arthrospira
platensis
NIOF17/003
nanoparticles
(AN)
on
growth
performance,
whole-body
biochemical
compositions,
blood
biochemistry,
steroid
hormonal,
and
fry
production
efficiency
Nile
tilapia
(
Oreochromis
niloticus
)
broodstock,
during
spawning
season.
After
a
21-day
preparation
period
to
equip
females
ensure
that
their
ovaries
were
filled
with
eggs,
mating
between
mature
males
took
place
in
3:1
ratio
14-day
cycle.
A
total
384
broodstock
288
96
an
initial
body
weight
450.53±0.75,
divided
into
four
groups;
AN
0
:
basal
diet
as
control
group
no
,
other
three
groups
(AN
2
4
6
diets
supplemented
.
at
levels
2,
4,
g
kg
─1
diet,
respectively.
The
results
found
fish-fed
showed
highest
significant
differences
gain
(WG),
final
(FW),
feed
conversion
(FCR),
protein
(PER),
(FER).
Females
fed
fat
content.
Compared
group,
fish
improvement
p
<
05
triglyceride,
glucose,
aspartate
aminotransferase
(AST).
gradual
increase
inclusion
level
resulted
concentrations
luteinizing
hormone
(LH),
follicle-stimulating
(FSH),
testosterone,
progesterone,
prolactin.
rates
(%)
for
10.5,
18.6,
32.2%
respectively,
compared
group.
work
concluded
significantly
improved
performances,
concentrations,
increased
by
32.2%,
These
findings
revealed
enhanced
female’
reproductive
productivity
broodstock.
Sustainable Development,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 6, 2024
Abstract
The
primary
objective
of
this
research
is
to
investigate
the
impact
increased
aquaculture
output
on
coastal
tourism
and
blue
growth
in
European
Union
developed
countries
(EU13)
developing
(EU14)
from
1990
2023.
Key
findings
were
derived
through
application
resilient
least
squares
(RLS),
two‐stage
(2SLS),
ordinary
(OLS)
estimators,
effectively
addressing
endogeneity
concerns.
exact
magnitudes
these
results
show
that,
EU14
countries,
increase
seriously
jeopardizes
sustainability
more
so
than
EU13
countries.
In
contrast,
find
that
variables
like
as
economic
institutional
quality
have
a
greater
improving
sustainable
development
do
Moreover,
data
shows
comparison
sector
uses
fossil
fuels
which
main
driver
carbon
dioxide
emissions
tourist
areas.
light
findings,
study
recommends
policymakers
give
policies
targeted
at
enhancing
productivity
encouraging
environmentally
friendly
production
top
priority,
particularly
significant
negative
effects
tourism.
