Factors for an Elevated Prevalence of Postpartum Diseases in Dairy Farms by
Jocelyn Dubuc in
CDVS in
Lupine Publishers.
The objective of this herd-level study was to identify risk factors
for an elevated prevalence of postpartum diseases such as
displaced abomasum, Hyperketonemia, purulent vaginal discharge,
cytological endometritis, leukocyte esterase endometritis,
and prolonged anovulation. A total of 100 commercial dairy farms
participated in the study for which the unit of interest was
the herd. Forty cows per herd (or all of the cows calving within a
1-year period if smaller than forty cows) were enrolled in the
study representing a total of 3,776 cows which were followed until they
reached 60 days in milk (DIM). Cows were examined for
retained placenta (≥ 24h after calving), displaced abomasum (1-60DIM),
Hyperketonemia (1-14DIM), purulent vaginal discharge
(30-43DIM), cytological endometritis (30-43 DIM), leukocyte esterase
endometritis (30-43DIM), and prolonged anovulation (30-
57DIM). A number of management variables were also collected, including
season, average herd size, average parity, housing
systems for lactating cows and at calving, and type of bedding at
calving. The prevalence of each of these diseases or management
variables was computed. Logistic regression models were used to identify
herd-level risk factors for the elevated prevalence of
postpartum diseases in farms. Risk factors for an elevated prevalence of
displaced abomasum included ≥5.0% retained placenta,
≥10.0% Hyperketonemia, smaller herd size (≤87 lactating cows), and cold
season (November to April) of calving. Risk factors for an
elevated prevalence of hyperketonemia were the tie-stall housing system
at calving, herd average parity ≥2.7, and ≥5.0% retained
placenta. Risk factors for an elevated prevalence of purulent vaginal
discharge included ≥5.0% retained placenta, wood shavings as
bedding at calving, and cold season (November to April) of calving. Risk
factors for an elevated prevalence of cytological endometritis
included ≥5.0% retained placenta, ≥10.0% hyperketonemia, and tie-stall
housing system at calving. Risk factors for an elevated
prevalence of leukocyte esterase endometritis were the same as for
cytological endometritis. Risk factors for an elevated prevalence
of prolonged anovulation were ≥10.0% Hyperketonemia, ≥17.5% cytological
endometritis, and cold season (November to April) of
calving. Overall, an elevated prevalence of retained placenta and
Hyperketonemia were two common risk factors for herds with an
excessive prevalence of reproductive tract diseases and prolonged
anovulation.
https://lupinepublishers.com/dairy-veterinary-science-journal/fulltext/a-herd-level-study-of-risk-factors-for-an-elevated-prevalence-of-postpartum-diseases-in-dairy-farms.ID.000116.php
https://lupinepublishers.com/dairy-veterinary-science-journal/abstracts/a-herd-level-study-of-risk-factors-for-an-elevated-prevalence-of-postpartum-diseases-in-dairy-farms.ID.000116.php
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