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OJVRTM
Online Journal of Veterinary Research©
Volume
20(7):471-479, 2016.
Effects of dystocia, parity and season on stillbirth in Holstein cows.
Mojtaba Goli
Department of clinical Science, Faculty of
Veterinary Medicine, Razi University, Kermanshah,
Iran
ABSTRACT
Goli M., Effects
of dystocia, parity and season on stillbirth in Holstein cows, Onl J Vet Res., 20(7):471-479, 2016. One hundred
eighty two primi- and multiparous artificially
inseminated Holstein cows unable to deliver by 2h from the beginning of the 2nd
stage of labor, were assumed to have dystocia, and assisted for delivery of
fetus. Results
suggest that dystocia due to fetal limb malposture,
malposition, twin birth, or uterine torsion induced greater calf mortality up
to 24h after birth, than deviation of fetal head, fetopelvic
disproportion or uterine inertia (P ≤ 0.05). There was no significant
effect of parity of the dam on incidence of stillbirth (P > 0.05). Less stillbirths were found during
summer compared with other seasons (P ≤ 0.05).
Keywords: dystocia; parity;
season; stillbirth; Holstein cow.
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