Animal Reproduction,
Год журнала:
2019,
Номер
16(3), С. 524 - 538
Опубликована: Янв. 1, 2019
This
review
aims
to
describe
changes
in
production
environment,
management
tools
and
technology
alleviate
problems
seen
with
the
present
hyperprolific
sow
model.
Successful
parturition
pig
includes
possibility
express
adequate
maternal
behaviour,
rapid
expulsion
of
piglets,
complete
placenta,
elimination
uterine
contamination
debris,
neonatal
activity
colostrum
intake.
We
focus
on
large
litters,
including
ease
parturition,
production,
piglet
quality
parameters
intermittent
suckling.
There
are
also
some
interesting
developments
assess
immune
state
piglet.
These
may
be
utilized
improve
success
rate
reproductive
around
farrowing,
lactation
after
weaning.
discuss
new
insights
how
examine
health
mammary
gland,
uterus
ovaries
sows.
Finally,
we
latest
breeding
sows,
artificial
insemination
(AI),
real-time
ultrasound
genital
tract
embryo
transfer
(ET).
conclude
that
1)
for
produce
sufficient
colostrum,
both
behavioural
physiological
needs
need
met
before
parturition.
Furthermore,
2)
biopsy
can
effectively
applied
accurate
diagnosis
inflammatory
processes
udder
timing
AI
regarding
ovulation
efficiency.
3)
cryopreservation
germ
cells
embryos
appear
promising
but
lack
valid
oocyte
collection
techniques
nonsurgical
ET
a
bottleneck
commercial
ET.
necessary
cope
increasing
challenges
associated
very
litter
sizes.
BMC Veterinary Research,
Год журнала:
2021,
Номер
17(1)
Опубликована: Март 22, 2021
Abstract
Background
Cryopreservation
is
an
efficient
way
to
store
spermatozoa
and
closely
associated
with
the
quality
of
sperm
after
freeze-thaw
process.
During
cycling,
excessive
reactive
oxygen
species
(ROS)
are
produced,
effects
ROS
on
boar
during
cryopreservation
have
not
been
identified.
Results
In
this
study,
we
evaluated
in
different
steps
(extension,
cooling,
thawing
for
30
min
240
min)
or
without
boar-sperm
antioxidant
(N-acetylcysteine
(NAC)).
The
levels,
motility,
plasma
membrane
integrity,
mitochondrial
activity,
chromatin
structure,
ATP
content,
apoptosis
were
assayed.
After
thawing,
level
significantly
increased,
content
impaired
compared
those
at
extension
period
cooling
period.
Moreover,
addition
N-acetyl
L-cysteine
(NAC)
reversed
these
changes.
Conclusion
freeze-thawing
their
membrane,
structure
by
producing
ROS.
Thus,
downregulation
antioxidants,
especially
NAC,
important
manufacturing
frozen
pig
increase
reproductive
cells
livestock
propagation,
as
well
improve
application
semen
pigs
worldwide.
Reproduction in Domestic Animals,
Год журнала:
2018,
Номер
54(3), С. 423 - 434
Опубликована: Дек. 8, 2018
Contents
In
the
pork
industry,
artificial
insemination
and
storage
of
boar
semen
in
liquid
at
17°C
are
routinely
applied
to
optimize
ejaculate
bring
about
rapid
genetic
changes
that
reflected
animal
protein.
Although
results
satisfactory,
they
below
what
occurs
with
natural
mating.
It
is
currently
possible
preserve
slow
freezing,
since
date
there
only
one
study
on
vitrification,
negative
applicable
case
implementing
an
intracytoplasmic
sperm
injection.
both
methods
due
sensitivity
osmotic
temperature
changes,
a
loss
quality
initial
sample;
however,
freezing
has
greater
deleterious
effects
sample
pregnancy
rates
number
live
births.
Therefore,
1%
all
inseminations
done
frozen
semen.
The
aim
this
review
provide
advances
studies
conducted
preservation
semen,
delving
more
deeply
into
critical
points
each
techniques
presents,
including
bacterial
contamination,
extender
components,
temperature,
ice
nucleation,
use
additives
extenders
main
quality.
Antioxidants,
Год журнала:
2023,
Номер
12(9), С. 1673 - 1673
Опубликована: Авг. 26, 2023
During
cryopreservation,
sperm
undergoes
structural
and
molecular
changes
such
as
ice
crystal
formation,
DNA
fragmentation,
reactive
oxygen
species
(ROS)
production,
leading
to
decreased
quality
after
thawing.
Antioxidants
play
a
crucial
role
in
preventing
these
damages,
both
vivo
vitro.
One
potent
antioxidant
is
myo-inositol,
known
for
its
protective
effects
on
against
ROS.
This
study
aimed
investigate
the
effect
of
myo-inositol
cryopreserved
boar
semen.
The
semen
was
diluted,
cooled,
using
BF5
extender.
It
then
divided
into
five
groups:
control
different
concentrations
(0.5,
1,
1.5,
2
mg/mL).
post-thaw
evaluation
included
assessments
motility,
viability,
acrosome
integrity,
mitochondrial
membrane
potential
(MMP),
caspase
activity,
gene
expression,
ROS
levels,
apoptosis,
IVF
with
treated
Results
showed
that
at
0.5
mg/mL
improved
fertilization
ability.
also
reduced
expression
pro-apoptotic
genes
increased
SMCP
expression.
Lower
demonstrated
viability
apoptosis
levels.
In
conclusion,
treatment
during
cryopreservation
quality,
enhanced
fertility
rates
International Journal of Molecular Sciences,
Год журнала:
2023,
Номер
24(13), С. 10983 - 10983
Опубликована: Июль 1, 2023
Cryodamage
affects
the
normal
physiological
functions
and
survivability
of
boar
sperm
during
cryopreservation.
Lysine
acetylation
is
thought
to
be
an
important
regulatory
mechanism
in
functions.
However,
little
known
about
protein
its
effects
on
cryotolerance
or
cryodamage
sperm.
In
this
study,
characterization
dynamics
cryopreservation
were
determined
using
liquid
chromatography-mass
spectrometry
(LC-MS).
A
total
1440
proteins
identified
out
4705
modified
proteins,
2764
quantifiable
sites
elucidated.
Among
differentially
sites,
1252
found
upregulated
compared
172
downregulated
fresh
frozen
sperms.
Gene
ontology
indicated
that
these
are
involved
metabolic
processes
catalytic
antioxidant
activities,
which
pyruvate
metabolism,
phosphorylation
lysine
degradation.
addition,
present
study
demonstrated
mRNA
expressions
SIRT5,
IDH2,
MDH2
LDHC,
associated
with
quality
parameters,
after
conclusion,
induces
deacetylation
energy
metabolism-related
may
contribute
post-thawed
parameters.
Molecules,
Год журнала:
2019,
Номер
24(23), С. 4329 - 4329
Опубликована: Ноя. 27, 2019
Male
subfertility
is
a
global
issue
in
human
reproduction
as
well
animal
reproduction.
Bacterial
infection
and
semen
contamination
are
still
widely
overlooked.
As
the
collection
of
ejaculates
not
sterile
process,
it
necessary
to
add
antimicrobial
agents
avoid
possible
depreciation
samples.
traditionally
used
antibiotics
have
been
questioned
because
an
ever-increasing
bacterial
resistance,
natural
bioactive
molecules
could
offer
alternative
their
antibacterial
antioxidant
properties.
such,
we
decided
compare
effects
selected
biomolecules
(resveratrol-RES,
quercetin-QUE
curcumin-CUR)
with
routinely
biotechnologies
(penicillin-PEN,
gentamicin-GEN
kanamycin-KAN)
on
rabbit
sperm
vitality
presence
Enterococcus
faecalis.
Changes
structural
integrity
functional
activity
were
monitored
at
0,
2,
4
6
h.
Computer-assisted
analysis
(CASA)
was
for
assessment
spermatozoa
motility.
Production
reactive
oxygen
species
(ROS)
evaluated
using
chemiluminiscence,
while
mitochondrial
membrane
potential
(ΔΨm)
examined
JC-1
dye.
Finally,
chromatin
dispersion
(SCD)
test
assess
DNA
fragmentation,
changes
help
annexin
V/propidium
iodide.
The
motility
revealed
significant
preservation
following
treatment
GEN
(p
<
0.001),
followed
by
PEN
CUR
0.01).
QUE
most
capable
substance
scavenge
excessive
ROS
0.001)
maintain
ΔΨm
SCD
assay
that
bacteria
significantly
0.05)
increased
fragmentation.
On
other
hand,
all
compounds
readily
preserved
0.05).
In
contrast
antibiotics,
maintained
microbiological
showed
KAN
0.01)
exhibited
strongest
against
E.
conclusion,
provided
protection
deleterious
structure
function
result
faecalis
contamination.
Therefore,
administration
RES,
and/or
extenders
combination
carefully
may
be
desirable.
International Journal of Molecular Sciences,
Год журнала:
2019,
Номер
20(7), С. 1791 - 1791
Опубликована: Апрель 11, 2019
Cryopreservation
induces
differential
remodeling
of
the
proteome
in
mammalian
spermatozoa.
How
these
changes
relate
to
loss
sperm
function
during
cryopreservation
remains
unsolved.
The
present
study
aimed
clarify
this
issue
evaluating
fresh
and
frozen-thawed
pig
spermatozoa
retrieved
from
cauda
epididymis
ejaculate
same
boars,
with
clear
differences
cryotolerance.
Spermatozoa
were
collected
10
healthy,
sexually
mature,
fertile
cryopreserved
using
a
standard
0.5
mL-straw
protocol.
Total
progressive
motility,
viability,
mitochondria
membrane
potential
higher
fluidity
reactive
oxygen
species
generation
lower
(FT)
epididymal
than
ejaculated
Quantitative
proteomics
FT
analyzed
LC-ESI-MS/MS-based
Sequential
Window
Acquisition
All
Theoretical
Spectra
approach.
quantitatively
altered
more
proteins
Differential
protein–protein
networks
highlighted
set
spermatozoa,
directly
involved
mitochondrial
functionality
which
would
explain
why
deteriorate
cryopreservation.