Scientific Horizons,
Journal Year:
2023,
Volume and Issue:
26(10), P. 127 - 137
Published: Aug. 26, 2023
The
growing
demand
for
food
of
animal
origin
has
contributed
to
the
annual
increase
in
agricultural
population
productive
animals
world,
which
turn
led
a
significant
shortage
feeds
and
an
their
cost.
Therefore,
purpose
this
research
was
explore
qualitative
composition
feed
products
obtained
by
culturing
methanotrophic
microorganisms
Methylococcus
capsulatus
with
probiotic
bacteria
Bacillus
subtillis.
Arbitrage
methods
determining
quality
feeds,
are
regulated
regulatory
documents
(ISO),
were
used
research.
results
demonstrate
that
protein
product
culture
high
content
“crude”
at
level
60.9%,
corresponds
high-protein
its
technical
characteristics.
addition
subtillis
medium
cultivation
significantly
improved
parameters
synthesised
increasing
1.5%
amount
essential
amino
acids,
3.8%
fatty
acids
concentration
calcium
phosphorus.
lysine,
isoleucine,
valine
asparagic
acid,
due
cocultivation
two
allowed
nutritional
value
cattle
since
these
most
demanded
ruminant
diets
when
using
corn
silage
other
plant
feeds.
reducing
fibre
improving
biological
characteristics
changing
microbiological
product.
In
future,
biotechnological
method
obtaining
will
reduce
dependence
breeding
on
fodder
crops
weather
conditions
Aquaculture,
Journal Year:
2023,
Volume and Issue:
578, P. 740034 - 740034
Published: Aug. 30, 2023
Genetic
selection
and
novel
raw
materials
for
aquafeeds
are
current
key
tools
in
the
ongoing
effort
to
increase
productivity,
efficiency,
sustainability
of
aquaculture
sector.
Selective
breeding
could
also
improve
utilization
dietary
formulations
with
emergent
ingredients.
Gilthead
sea
bream
juveniles,
either
coming
from
a
selective
program
based
on
growth
traits,
or
non-selected
population,
were
nutritionally
challenged
two
that
compared
Control
diet
15%
FM
6%
FO
commercial
levels
this
species.
The
included
an
insect
meal
(INS)
at
5%
replace
33.3%
FM,
single-cell
protein
(SCP)
10%
66.7%
FM.
Fish
oil
was
totally
replaced
these
diets
by
blend
poultry
Veramaris
algal
oil.
Better
feed
selected
genotype
fish
observed,
any
assayed.
INS
SCP
reduced
general
performance
reducing
intake.
However,
fed
showed
very
similar
lower
conversion
ratio
control
diet.
increased
n-3
LC-PUFA
tissues,
particularly
DHA,
irrespective
genotype,
as
result
inclusion
DHA-rich
microalgal
Neither
genetic
nor
use
affected
fillet
proximate
composition
consequently,
quality
terms
texture
sensorial
perception
consumers.
Overall,
results
reaffirm
positive
effects
programs
improving
productive
indicators,
well
support
formulations,
using
H.
illucens,
M.
capsulatus
partial
replacers
gilthead
(33
66%
replacement,
respectively),
oils
total
replacer
FO.
Aquaculture,
Journal Year:
2023,
Volume and Issue:
577, P. 739958 - 739958
Published: Aug. 1, 2023
To
promote
sustainability
and
efficiency
for
aquaculture
production,
there
are
two
key
actions:
i)
The
implementation
of
novel
nutritional
strategies
with
more
sustainable
raw
materials,
that
aim
to
reduce
the
dependence
on
fishmeal
(FM)
fish
oil
(FO)
in
feeds,
ii)
a
successful
breeding
program
addressed
improve
growth,
feed
utilization,
health.
Different
studies
performed
salmonids
European
sea
bass
(Dicentrarchus
labrax)
support
existence
genetic
variability
utilization
plant
or
non-marine-based
diets.
Nevertheless,
those
do
not
consider
better
zootechnical
performance
obtained
selected
can
be
associated
differences
digestive
biochemistry.
Therefore,
present
study
aimed
evaluate
changes
levels
activities
different
enzymes
populations
gilthead
seabream
(Sparus
aurata):
reference
high
growth.
Furthermore,
effect
diets
including
variety
protein
ingredients
partially
substituting
FM
(poultry
meal,
insect
bacterial
single-cell
protein)
was
assessed
enzyme
profile
both
genotypes,
after
90
days
feeding.
Higher
certain
protein-related
(pepsin
chymotrypsin)
were
found
bream
compared
fish.
Selected
also
revealed
higher
ADCs
dietary
amino
acids,
irrespective
diet
fed,
group.
These
results,
added
growth
fish,
suggest
able
utilize
combination
emergent
aquafeeds,
showing
pattern
face
diets,
which
indicates
plasticity
ingredients.
Those
could
reflecting
compensatory
mechanism
digestibility
ingredient.
Frontiers in Marine Science,
Journal Year:
2024,
Volume and Issue:
11
Published: March 12, 2024
Exploring
alternatives
to
fishmeal
(FM)
in
aquaculture
nutrition
remains
a
hot
topic
this
area.
Yarrowia
lipolytica
(YL),
promising
single-cell
protein
source,
has
yet
be
evaluated
for
its
use
on
the
Pacific
white
shrimp
(
Litopenaeus
vannamei
)
diet.
This
investigation
assessed
effects
of
YL
growth
performance,
metabolism,
antioxidant
capacity,
and
nutrient
digestibility
shrimp.
Seven
diets
with
equal
lipid
contents
were
prepared,
incorporating
gradient
(dry
matter
basis):
0%
(control),
1.50%,
3.00%,
4.50%,
6.00%,
9.00%,
12.00%.
During
56-day
feeding
trial
involving
shrimp,
an
initial
average
weight
0.32
±
0.02
g,
each
kind
diet
was
randomly
assigned
six
tanks.
It
observed
that
performance
improved
initially
but
then
exhibited
declining
trend
as
dietary
inclusion
increased.
Regression
analysis
indicated
2.68%
optimal
percentage
specific
rate
(SGR),
accounting
10.54%
FM
content.
A
higher
(over
6.00%),
which
is
equivalent
replacing
over
23.6%
FM,
led
increased
feed
intake
conversion
ratios,
possibly
correlating
decreased
digestibility.
However,
across
studied
range
had
no
detrimental
impact
intestinal
or
hepatopancreatic
morphology.
Notably,
levels
significantly
enhanced
trypsin
activity
reduced
serum
triglyceride
cholesterol
levels.
The
notably
augmented
defense
mechanisms
evidenced
by
total
capacity
catalase
activities,
well
malondialdehyde
hepatopancreas,
due
presence
β-glucan
mannan
oligosaccharides
YL.
These
findings
support
being
viable
source
feeds.
Fishes,
Journal Year:
2022,
Volume and Issue:
7(6), P. 352 - 352
Published: Nov. 27, 2022
Litopenaeus
vannamei
was
divided
into
seven
groups
(defined
as
diets
A0–A6)
and
fed
with
respectively
containing
0,
0.5,
1,
2,
4
8
g/kg
Yarrowia
lipolytica
(astaxanthin
content:
1.5%)
3
Haematococcus
pluvialis
2%).
After
an
eight-week
feeding
trial,
the
results
reflected
that
different
levels
of
Y.
H.
could
significantly
increase
weight
gain
rate
L.
(p
<
0.05).
The
condition
factor
group
A4
were
higher
than
those
other
0.05);
HSI
decreased
addition
to
diet
had
significant
effects
on
total
protein
(TP),
albumin
(ALB),
glutathione
peroxidase
(GSH-Px),
malonaldehyde
(MDA)
antioxidant
capacity
(T-AOC)
A5
A6
GSH-Px
activity
highest
T-AOC
A0
lowest.
Inducible
nitric
oxide
synthase
(I-NOS)
increased
inclusion
no
negative
effect
physiological
biochemical
parameters
some
serum
immune
indexes
>
Astaxanthin
in
obvious
body
color.
cooking,
color
shrimp
deepened
increasing
content.
red
improved
by
adding
yeasts
hydrolysate
2~8
diet.
According
regression
analysis
between
level
added
rates,
optimal
is
4.64
g/kg.
Aquaculture Reports,
Journal Year:
2024,
Volume and Issue:
36, P. 102105 - 102105
Published: April 22, 2024
The
aim
of
this
study
was
to
investigate
the
growth
performance
gilthead
sea
bream
(Sparus
aurata)
fed
with
a
mixture
single
cell
ingredient
(SCI)
(bacterial
protein,
yeast
protein
and
algae)
for
organic
aquaculture.
Sea
an
initial
mean
body
weight
6.87±0.07
g
were
randomly
allocated
250-litre
tanks.
Four
isonitrogenous,
isolipidic
isoenergetic
diets
formulated
by
replacing
fishmeal
trimmings
0%
(control),
12%
(SCI12),
15%
(SCI15)
18%
(SCI18)
SCI
mixture.
Each
diet
distributed
groups
in
triplicate.
fish
three
times
daily
until
satiation
experimental
period
60
days.
Survival
rates
voluntary
feed
intake
similar
different
treatments
(p
>
0.05).
Similar
0.05)
(final
weight,
SGR)
conversion
ratio
(FCR)
observed
all
SCI-based
diets,
which
superior
control
treatment.
Apparent
digestibility
among
treatments,
but
lipid
significantly
reduced
SCI15
SCI18
compared
SCI12
group.
specific
activities
trypsin,
total
alkaline
protease
lipase
increased
<
content
fillet
decreased
other
groups.
No
adverse
effects
on
liver
intestinal
histology
results
suggest
that
can
be
successfully
replaced
innovative
SCIs
based
microbial
meal
algae,
could
candidate
aqua
bream.