BMC Veterinary Research,
Journal Year:
2024,
Volume and Issue:
20(1)
Published: Feb. 27, 2024
Abstract
Background
Newcastle
Disease
Virus
(NDV)
causes
severe
economic
losses
in
the
poultry
industry
worldwide.
Hence,
this
study
aimed
to
discover
a
novel
bioactive
antiviral
agent
for
controlling
NDV.
Streptomyces
misakiensis
was
isolated
from
Egyptian
soil
and
its
secondary
metabolites
were
identified
using
infrared
spectroscopy
(IR),
gas
chromatography–mass
spectrometry
(GC–MS),
nuclear
magnetic
resonance
(NMR)
spectroscopy.
The
inhibitory
activity
of
metabolite
against
NDV
examined.
Three
experimental
groups
10-day-old
specific
pathogen-free
embryonated
chicken
eggs
(SPF-ECEs),
including
control
group,
positive
α-sitosterol
mixture-treated
group
inoculated.
Results
(Ethyl-6-methylheptan-2-yl]-10,13-dimethyl-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol),
S.
,
completely
inhibited
hemagglutination
(HA)
strain.
HA
strain
8
log
2
9
0.5
0.75%
RBCs,
respectively.
two
concentrations
RBCs
significantly
(
P
<
0.0001)
after
treatment.
There
significant
decrease
activity,
with
values
−
0.500
(75%,
RBCs)
before
inoculation
SPF-ECEs
1.161
(50%,
1.403
following
SPF-ECE
inoculation.
Compared
ECEs
inoculated
alone,
α-sitosterol-treated
showed
improvement
histological
lesion
ratings
chorioallantoic
membranes
(CAM)
hepatic
tissues.
CAM
α-sitosterol-
preserved.
epithelial
stromal
layers
noticeably
thicker
extensive
hemorrhages,
clogged
vasculatures,
certain
inflammatory
cells
stroma
layer
group.
However,
mild
edema
cell
infiltration
observed
treated
alone
normal
histology
acini,
central
veins,
portal
triads.
Severe
degenerative
alterations,
steatosis,
sinusoids,
Mild
perivascular
round
infiltration,
Conclusion
To
best
our
knowledge,
is
first
highlight
that
potentially
metabolite,
α-sitosterol,
belonging
terpene
family,
has
potential
be
biological
weapon
virulent
It
could
used
development
innovative
drugs
further
clinical
investigation.
Biology,
Journal Year:
2025,
Volume and Issue:
14(4), P. 379 - 379
Published: April 7, 2025
This
study
evaluates
the
chemical
composition,
fatty
acid
profiles,
and
bioactive
properties
of
ethanolic
(SPE),
methanolic
(SPM),
acetonic
(SPA)
extracts
Arthrospira
platensis.
The
analysis
revealed
a
high
protein
content
(72.08%),
moderate
lipid
levels
(6.49%),
diverse
profile,
dominated
by
polyunsaturated
acids.
Antibacterial
testing
showed
that
SPE
exhibited
strongest
activity
against
Gram-negative
bacteria,
including
Escherichia
coli
(ATCC
25922),
Enterobacter
cloacae
49141),
Proteus
mirabilis
25933),
Salmonella
typhi
6539),
typhimurium
14028),
enteritidis
13076),
gallinarum
9184),
Pseudomonas
aeruginosa
27853).
anticoccidial
was
also
significant,
with
reducing
Eimeria
sp.
oocyst
counts
in
poultry
intestines
ceca.
Antioxidant
highest
SPM,
which
had
phenolic
content.
LC-MS/MS
profiling
extract
various
compounds,
acids,
flavonoids,
carotenoids,
chlorophylls,
phycobiliproteins.
These
results
suggest
A.
platensis
has
great
potential
as
nutraceutical
supplement
farming,
offering
sustainable
alternative
to
synthetic
additives.
Life,
Journal Year:
2025,
Volume and Issue:
15(4), P. 670 - 670
Published: April 17, 2025
There
is
growing
interest
in
adding
marine
algae
to
poultry
feed
rations.
The
aim
of
the
present
study
examine
effect
various
inclusions
Sargassum
sp.,
Gracilaria
and
Spirulina
sp.
on
productive
performance,
serum
proteins,
liver
meat
quality,
antioxidant
activity
broiler
chickens.
were
seven
dietary
treatments
(TRTs)
as
follows:
TRT
1
was
control
group
without
algae;
2
enriched
with
at
1%
diet;
3
2%
4
0.5%
5
6
5%
7
7.5%
diet.
Each
treatment
replicated
ten
times,
17
birds
per
replicate,
analyses
performed
triplicates.
Results
rations
proximate
revealed
that
formulated
diets
contained
required
amounts
protein,
fat,
fiber,
ash,
moisture,
be
fed
no
production
performance
parameters
birds.
All
normally
group.
It
shown
enriching
diet
Induced
an
increase
total
while
algal
inclusion
reduced
compared
At
five
weeks
age,
resulted
a
higher
concentration
protein-C
than
inclusion.
Enriching
3-
wks
old
broilers
elevated
proportions
LFABP.
maximum
proportion
omega
fatty
acid
(∑n-6)
observed
received
diet,
(∑n-3)
highest
algae-enriched
groups.
results
showed
all
lowered
ratio
omega-6
omega-3
acids
(∑n-6:∑n-3).
chickens
increased
HDL
concentration,
palatability
for
color,
texture,
flavor,
appearance,
smell,
overall
acceptability
not
negatively
affected
by
inclusions.
enhanced
anti-oxidative
status
lipid
oxidative
stability
stored
In
general,
it
can
concluded
used
any
detrimental
effects
Veterinary Sciences,
Journal Year:
2023,
Volume and Issue:
10(12), P. 678 - 678
Published: Nov. 27, 2023
This
study
aims
to
evaluate
the
effectiveness
of
dietary
addition
Spirulina
platensis
(SP)
and/or
garlic
powder
(GP)
on
heat-stressed
broiler
chickens.
For
this
purpose,
600
Ross-308
chicks
were
allocated
at
22
days
age
into
five
groups
(G1-G5),
each
comprising
six
20
birds
each.
Chickens
kept
in
G1
(negative
control)
fed
a
basal
diet
and
raised
26
±
1
°C.
G2
G5
exposed
periodic
heat
stress
(35
°C
for
9
h/day)
from
35
old.
(positive
provided
diet,
while
G3,
G4,
enriched
with
SP
(1
g/kg
diet),
GP
(200
mg/kg
or
SP/GP
g
SP/kg
+
200
mg
GP/kg
respectively.
The
assessment
parameters
included
chickens'
performance,
malondialdehyde
total
antioxidant
capacity,
blood
biochemistry,
intestinal
morphology,
modulation
lactobacilli
coliforms
microbiota.
Our
findings
demonstrated
that
supplementing
chickens
significantly
mitigated
negative
effects
European
production
efficiency
index
(EPEF),
survival
rate,
cholesterol
profile,
oxidative
markers.
supplemented
exhibited
better
EPEF
survivability
rates.
Heat
had
significant
impact
both
gut
structure
However,
supplementation
improved
increased
lactobacilli,
reduced
coliform
contents.
It
was
also
found
simultaneous
feeding
led
even
higher
recovery
levels
lipid
metabolites,
immunity,
status.
Overall,
can
alleviate
stress.
BMC Veterinary Research,
Journal Year:
2024,
Volume and Issue:
20(1)
Published: Feb. 27, 2024
Abstract
Background
Newcastle
Disease
Virus
(NDV)
causes
severe
economic
losses
in
the
poultry
industry
worldwide.
Hence,
this
study
aimed
to
discover
a
novel
bioactive
antiviral
agent
for
controlling
NDV.
Streptomyces
misakiensis
was
isolated
from
Egyptian
soil
and
its
secondary
metabolites
were
identified
using
infrared
spectroscopy
(IR),
gas
chromatography–mass
spectrometry
(GC–MS),
nuclear
magnetic
resonance
(NMR)
spectroscopy.
The
inhibitory
activity
of
metabolite
against
NDV
examined.
Three
experimental
groups
10-day-old
specific
pathogen-free
embryonated
chicken
eggs
(SPF-ECEs),
including
control
group,
positive
α-sitosterol
mixture-treated
group
inoculated.
Results
(Ethyl-6-methylheptan-2-yl]-10,13-dimethyl-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol),
S.
,
completely
inhibited
hemagglutination
(HA)
strain.
HA
strain
8
log
2
9
0.5
0.75%
RBCs,
respectively.
two
concentrations
RBCs
significantly
(
P
<
0.0001)
after
treatment.
There
significant
decrease
activity,
with
values
−
0.500
(75%,
RBCs)
before
inoculation
SPF-ECEs
1.161
(50%,
1.403
following
SPF-ECE
inoculation.
Compared
ECEs
inoculated
alone,
α-sitosterol-treated
showed
improvement
histological
lesion
ratings
chorioallantoic
membranes
(CAM)
hepatic
tissues.
CAM
α-sitosterol-
preserved.
epithelial
stromal
layers
noticeably
thicker
extensive
hemorrhages,
clogged
vasculatures,
certain
inflammatory
cells
stroma
layer
group.
However,
mild
edema
cell
infiltration
observed
treated
alone
normal
histology
acini,
central
veins,
portal
triads.
Severe
degenerative
alterations,
steatosis,
sinusoids,
Mild
perivascular
round
infiltration,
Conclusion
To
best
our
knowledge,
is
first
highlight
that
potentially
metabolite,
α-sitosterol,
belonging
terpene
family,
has
potential
be
biological
weapon
virulent
It
could
used
development
innovative
drugs
further
clinical
investigation.