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OJVRTM
Online Journal of
Veterinary Research©
Volume 20(2):104-115, 2016.
Effects of inducing parturition on natural partus, calf viability, and incidence
of retained placenta and dystocia in Holstein cows
Mojtaba Goli,
DVM, DVSc.
Clinical Science Division, Faculty of
Veterinary Medicine, Razi University, P.O. Box:
6715685414, Kermanshah, Iran
ABSTRACT
Goli M., Effects of inducing
parturition on natural partus, calf viability, and
incidence of retained placenta and dystocia in Holstein cows, Onl J Vet Res., 20(2):104-115, 2016. Induction of parturition can reduce calf mortality rate and calving
problems. Uni and multiparous Holstein pregnant cows
with 273-280 days of gestation were given intramuscular (IM) 20mg dexamethasone
only (n=27), or with 500µg cloprostenol (n=21) or
with 25mg dinoprost (n=36). Controls (n=78) were
given 10ml normal sterile saline IM. Cows were monitored at regular times
during days and nights without disturbance to avoid initiating partus. All animals
calved within 12-55h of injections (mean, 29.89h) with 100% induction in all
groups. Results showed high calf viability rate, no significant differences in
stillbirths, incidence of retained placenta or dystocia. The findings suggest
exogenous induction of parturition close to natural partus
can be managed safely.
Key-words:
Cow; Induction of parturition; calf viability; Retained placenta;
Dystocia. Raw data provided.
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