Com
intuito
de
avaliar
alterativas
que
possibilitem
a
mitigação
do
impacto
ambiental
pela
bovinocultura
corte,
o
presente
trabalho
propôs
se
intensificação
sistema
pastejo
juntamente
com
utilização
da
suplementação
nitrato
amônio
para
bovinos
corte
pode
alterar
metabolismo
ruminal
e
mitigar
metano
gerado
por
animais
mantidos
em
sistemas
pastejo.Teve-se
como
objetivos
específicos
aferir
efeito
dos
métodos
suplementos
quanto
ao
consumo
matéria
seca,
digestibilidade
Animals,
Год журнала:
2025,
Номер
15(4), С. 596 - 596
Опубликована: Фев. 19, 2025
Tannins
are
secondary
metabolites
naturally
present
in
various
plants
as
a
defense
mechanism.
In
animal
nutrition,
they
play
dual
role,
acting
both
antinutritional
factors
and
bioactive
agents,
with
potential
benefits
nutrient
metabolism
product
quality.
This
meta-analysis
aimed
to
evaluate
the
effects
of
dietary
tannin
on
intake
digestibility,
blood
serum
metabolite
levels,
growth
performance,
carcass
characteristics,
meat
quality
small
ruminants.
Ninety-seven
studies
were
included
this
meta-analysis.
The
tannins
analyzed
using
random-effects
model
determine
weighted
mean
difference
between
treatments
control
(without
tannins).
Publication
bias
heterogeneity
explored,
meta-regression
subgroup
analyses
performed.
results
indicated
that
significantly
increased
dry
matter,
crude
protein,
nitrogen
(N),
fecal
N,
fatty
acids
(FA),
such
C18:2
ω6,
C18:3
ω3,
C20:4
C20:5
total
ω3
ω6
FA,
polyunsaturated
FA
(PUFA).
However,
NH3-N,
urinary
urea
nitrogen,
cold
weight,
subcutaneous
fat
thickness,
drip
loss,
digestibility
decreased.
conclusion,
ruminants
did
not
affect
productivity
antioxidative
status,
but
mainly
modified
improved
acid
profile
meat.
Microorganisms,
Год журнала:
2025,
Номер
13(4), С. 933 - 933
Опубликована: Апрель 17, 2025
This
study
was
conducted
to
compare
the
effects
of
hydrolysable
versus
condensed
tannins
on
growth
performance,
nutrient
digestion,
and
rumen
fermentation
in
goats.
A
total
27
Liaoning
cashmere
goats
with
similar
initial
body
weights
were
randomly
distributed
into
three
groups:
a
basal
diet,
diet
+0.5%
tannic
acid
(hydrolysable
tannin,
HT),
or
quebracho
tannin
(condensed
CT),
respectively.
Compared
control
group,
HT
showed
decreased
(p
<
0.05)
feed
intake,
while
CT
an
increased
intake
weight
gain.
Digestibility
dry
matter,
crude
protein,
neutral
detergent
fiber,
fiber
did
not
differ
>
among
groups.
The
group
lower
pH
acetic
concentration
0.05),
decrease
abundances
Verrucomicrobia
Methanobrevibacter.
Supplementation
levels
dihydrouracil,
xanthosine,
alpha-D-mannose,
L-tryptophan,
these
metabolites.
In
conclusion,
this
suggested
that
responses
ruminal
microbiota
metabolite
profiles
type
varied,
displayed
more
positive
effect
performance
than
when
supplemented
at
same
level
diets.
Sustainability,
Год журнала:
2023,
Номер
15(5), С. 4162 - 4162
Опубликована: Фев. 25, 2023
Sustainable
intensification
involves
maintaining
ecosystem
balance
and
increasing
productivity
per
animal
unit
area.
Phytogenic
additives
can
be
used
as
an
alternative
to
achieve
sustainable
intensification.
Tannins
are
phenolic
compounds
present
in
plants
that
classified
according
their
chemical
structure
into
hydrolyzable
condensed
compounds.
When
added
ruminant
diets,
tannins
exert
effects
on
rumen
fermentation,
such
a
reduction
protein
degradation
enteric
methane
production
of
dry
matter
ingested,
may
also
improve
weight
gain.
The
advantage
this
mechanism
is
it
increases
dietary
utilization,
reduces
nitrogen
excretion
urine,
nitrous
oxide
emissions.
However,
the
positive
these
nutritional
require
further
investigation.
Therefore,
objective
review
demonstrate
results
hitherto
known
use
nutrition.
result
both
negative
effects,
depending
sources
doses
administered.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Май 31, 2024
Abstract
The
study
investigated
how
the
concentration
and
composition
of
purified
tannin
extracts,
at
various
inclusion
rates,
affect
ruminal
in
vitro
fermentation
parameters.
Tannin
extracts
were
isolated
from
four
different
forage
species:
birdsfoot
trefoil
(
Lotus
corniculatus)
,
sulla
(Hedysarum
coronarium),
big
(Lotus
pedunculatus),
salad
burnet
Sanguisorba
minor
).
Plants
by
Sephadex
LH-20
gel
chromatography
analyzed
UPLC–ESI–MS/MS.
results
showed
a
large
variation
among
species
terms
structural
features.
dominated
hydrolysable
tannins,
comprising
mainly
ellagitannins.
derived
contained
predominantly
proanthocyanidins
(PA),
primarily
composed
prodelphinidins
with
high
mean
degree
polymerisation
(mDP).
Birdsfoot
comprised
procyanidin-rich
PAs
low
mDP.
To
determine
whether
combined
presence
tannins
flavonoid
together
lead
to
synergistic
or
antagonistic
effects,
incubated
both
without
rutin
concentrations
10,
20,
30
g/kg
DM,
using
base
substrate
perennial
ryegrass
Lolium
perenne
control).
In
general,
all
decreased
methane
(CH
4
)
production
compared
control,
while
no
significant
effect
was
observed
on
gas
(GP)
CH
production,
neither
pure,
nor
simultaneous
tannins.
highest
reduction
(15%,
DM)
but
this
also
supplemented
concomitant
GP
(11%)
indicating
feed
digestibility.
reduced
up
12%
significantly
reducing
GP,
importance
fermentation.