POPM 4230 Lecture Notes - Lecture 17: Perinatal Mortality, Obstructed Labour, Born Dead
Document Summary
Stars = questions from final exam will be from these slides. A calf carried to term, or at least longer than 260 days and born dead or dying within 24- 8% of calves are stillborn in canada. Much of this loss preventable (about 60% are preventable) Not much we can do to prevent this. Calving time is a deadly time period = lots of mortality = perinatal mortality. Fetus too big to come through the pelvis (heifer too small or calve too big) Breed (holstein are often predisposed to dystocia. Uterine torsion (twisted uterus, need untwist to get calf out) Insufficient dilation of cervix (not waiting enough time to pull the calf out) Impaired breathing (lack of oxygen) and thermoregulation (susceptible to hypothermia) Failure of passive transfer (don"t have enough energy to get up and suck) Decide what sire you are using, some will have calving ease.