Assessing the impact of thermoregulatory mineral supplementation on thermal comfort in lactating Holstein cows
Veterinary and Animal Science,
Год журнала:
2024,
Номер
24, С. 100363 - 100363
Опубликована: Май 24, 2024
Heat
stress
(HS)
occurs
when
animals
are
enable
to
effectively
dissipate
excessive
body
heat,
potentially
affecting
their
welfare
and
productivity.
Several
tools
can
be
used
mitigate
HS
in
dairy
cows.
The
aim
of
this
study
was
evaluate
the
effect
thermoregulatory
mineral
supplementation
on
cows'
physiological
response
reproductive
status.
Thirty
pluriparous
Holstein
cows
(2.8
±
0.3
lactation),
from
a
semi
confinement
production
system
(freestall
barn),
were
enrolled
35
days
duration
experiment,
divided
into
two
groups:
15
receiving
mixture
containing
calcium,
sodium,
chlorine,
potassium
(200
g/day;
TRT);
and,
that
did
not
receive
any
type
supplement
(CON).
Data
respiration
rates
(RR),
rectal
temperature
(RT),
milk
yield,
barn
temperature,
relative
humidity,
humidity
index
(THI)
obtained
weekly
evaluations
(D7,
D14,
D21,
D28,
D35).
ANOVA
correlation
analysis
compare
variables
between
groups,
climate
variables,
regardless
group.
Related
farm's
protocols,
D0
D35,
all
submitted
US
evaluation
categorized
as
inseminated,
pregnant,
data
analysed
using
Fisher's
exact
test.
Cows
TRT
group
had
lower
RT,
compared
CON
(38,8°C
39,0°C,
respectively;
P
=
0.0147),
however
both
averages
within
range.
As
stronger
positive
correlations
found
RR
RT
with
THI.
In
study,
significantly
affect
responses
or
Язык: Английский
From Posts to Practice - Instagram's Role in Veterinary Dairy Cow Nutrition Education: How Does the Audience Interact and Apply Knowledge? A Survey Study
Journal of Dairy Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 1, 2024
This
study
evaluates
Instagram's
efficacy
as
an
educational
tool
in
veterinary
sciences,
focusing
on
dairy
cow
nutrition
and
management.
Using
the
Instagram
account
"Stalla
Didattica
Unibo,"
established
December
2020,
a
survey
was
conducted
with
102
respondents,
primarily
consisting
of
university
students
(44.12%).
The
respondents
were
divided
into
2
major
groups:
general
population,
latter
comprising
professionals
others
not
currently
programs.
In
overall
age
group
25-34
accounted
for
51%,
but
among
students,
it
73.3%.
terms
gender
distribution,
there
female
majority
population
(59.8%)
male
(73.3%).
Most
responders
from
Italy,
Emilia-Romagna
contributing
significantly.
Engagement
measured
only
by
length
time
participants
followed
also
active
interactions
such
likes,
comments,
shares.
Among
total
47.1%
had
page
over
year,
compared
37.8%
students.
Importantly,
engagement
metrics
showed
participation,
reporting
improved
knowledge
(75.6%
74.5%
students)
practical
application
content
(64.4%
67.6%
students).
Content
preferences
varied,
favoring
quizzes
(33.3%)
stories
(17.8%),
while
stronger
preference
standard
posts
(36.3%).
Impact
defined
perceived
influence
respondents'
learning
professional
practices,
46.7%
52.9%
agreeing
or
strongly
that
positive
impact
their
skills.
Furthermore,
84.3%
77.8%
stated
they
would
recommend
to
others,
underscoring
account's
effectiveness
digital
tool.
highlights
potential
enhance
education
suggests
further
research
explore
broader
these
strategies
across
different
contexts
platforms.
Язык: Английский
Revealing study and breeding implications for production traits and tail characteristics in Simmental cattle by GWAS
Frontiers in Genetics,
Год журнала:
2025,
Номер
16
Опубликована: Янв. 31, 2025
Simmental
cattle
are
renowned
for
their
dual
purpose
as
meat
and
dairy
breeds.
The
study
recorded
phenotype
data
from
183
performed
a
Genome-Wide
Association
Study
(GWAS)
analysis
to
elucidate
the
genetic
mechanisms
underlying
milk
production,
body
size
traits,
tail
characteristics.
Statistical
of
showed
that
season,
parity,
age
at
first
calving
(AFC)
factors
had
significant
effect
on
production
(P
<
0.05).
results
GWAS
linear
traits
revealed
candidate
genes
SH3RF2,
DCHS2,
ADAMTS1,
CAMK4,
PPARGC1A,
PRL,
PRP6,
CORIN
have
been
found
affect
circumference
(BC)
cannon
(CC).
Through
including
Circumference
over
root
(COTR)
Tail
Length
(TL)
in
cattle,
associated
with
length,
such
KIF26B,
ITPR2,
SLC8A1,
SLIT3
were
identified.
Interestingly,
IL1RAP,
AQP9,
PKD2
also
metabolic
inflammation
tails.
These
markers
offer
valuable
insights
into
facilitating
development
molecular
breeding
strategies
enhance
value
provide
references
programs.
Язык: Английский
Two years of precision livestock management: harnessing ear tag device behavioral data for pregnancy detection in free-range dairy cattle on silage/hay-mix ration
Frontiers in Animal Science,
Год журнала:
2025,
Номер
6
Опубликована: Март 31, 2025
Introduction
The
aim
of
this
study
was
to
evaluate
the
transformative
potential
precision
livestock
farming
(PLF)
in
dairy
production,
nutrition,
and
reproductive
efficiency
by
implementing
proactive
management
strategies
that
utilize
real-time
data.
Methods
Data
were
gathered
from
a
commercial
farm,
employing
3D
accelerometer
system
attached
ear-tags
monitor
activity
rumination
behavior.
Additionally,
information
on
animal-related
events
such
as
oestrus,
artificial
insemination,
clinical
diseases,
treatments
recorded.
Results
It
observed
there
differences
between
positive
negative
cows
days
following
insemination
(AI).
Specifically,
day
0
16,
exhibited
higher
time
compared
cows,
with
contrast
being
particularly
significant
9
10.
Over
duration
study,
tested
produced,
average,
0.78
kg
more
milk
per
day.
Discussion
This
suggests
animals
production
less
likely
be
pregnant,
potentially
due
increased
nutrient
allocation
mammary
gland,
resulting
pronounced
energy
balance
consequently
lower
conception
rates.
Furthermore,
utilized
capable
distinguishing
daily
lying
pregnant
non-pregnant
oestrus
return.
finding
highlights
for
developing
alert
identify
“probable
pregnant”
non-pregnant”
animals.
Язык: Английский
Impact of urea-molasses treated wheat straw levels in total mixed rations on growth and nutrient digestibility in Azikheli buffalo calves
Tropical Animal Health and Production,
Год журнала:
2025,
Номер
57(2)
Опубликована: Март 1, 2025
Abstract
This
study
investigates
the
impact
of
urea
molasses-treated
wheat
straw
on
growth
performance
and
nutrient
digestibility
in
Azikheli
buffalo
male
calves.
A
longitudinal
experiment
was
conducted
sixteen
calves,
randomly
assigned
to
four
experimental
dietary
treatments
(
n
=
4
per
group).
The
diets
included
a
control
group
(U0)
with
untreated
three
groups
where
replaced
33%
(U33),
66%
(U66),
or
100%
(U100)
total
mixed
ration.
Results
indicated
that
increasing
proportion
urea-treated
from
0
led
significant
improvements
dry
matter
intake
(from
2931
4034
g/day)
organic
2596
3623
g/day).
Digestibility
matter,
crude
protein,
fiber
also
followed
an
trend,
reaching
77.42%,
81.21%,
87.10%,
60.22%,
respectively,
at
highest
level.
Furthermore,
weight
gain
significantly
greater
calves
fed
straw,
by
those
U66,
U33,
U0
groups.
Feed
conversion
efficiency
improved
substantially
U100
U66
than
U33
U0.
These
findings
suggest
incorporating
higher
levels
UMTWS
rations
enhances
digestibility,
promoting
superior
feed
Язык: Английский
Effects of hemp-based polyunsaturated fatty acid supplementation on membrane lipid profiles and reproductive performance in Martina Franca jacks
Frontiers in Veterinary Science,
Год журнала:
2025,
Номер
12
Опубликована: Апрель 16, 2025
This
study
evaluates
the
impact
of
dietary
supplementation
with
hemp-based
polyunsaturated
fatty
acids
(PUFAs)
on
membrane
lipid
profiles
and
reproductive
performance
Martina
Franca
jacks.
Over
a
90-day
period,
twelve
donkeys
were
divided
into
treatment
group
receiving
hemp
oil
control
standard
diet.
Semen
blood
samples
collected
analyzed
at
multiple
time
points
for
composition
parameters.
Results
revealed
that
sperm
motility
improved
significantly,
increasing
from
92.61%
in
to
96.63%
by
Day
60
(
p
=
0.05).
Normal
morphology
also
showed
significant
enhancement,
rising
96.58%
98.85%
0.04).
Conversely,
gel-free
semen
volume
decreased
significantly
group,
64.17
mL
28.20
<
0.0001).
Lipidomic
analyses
indicated
an
increased
proportion
omega-3
PUFAs,
such
as
eicosapentaenoic
acid
(EPA;
0.08%
0.20%
60,
0.0001),
membranes,
alongside
reduction
peroxidation
index
(264.11
86.53
These
changes
suggest
fluidity
oxidative
stability.
findings
underscore
potential
supplement
enhance
outcomes
donkeys,
broader
implications
livestock
management.
Язык: Английский