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- W2071239545 abstract "Intrapartum death in multiparous gestations in sows (Sus scrofa) is often caused by hypoxia. There is little information in the literature on the assessment of the placenta in relation to intrapartum death in piglets. The aim of this study was to evaluate the impact of the placental area and weight upon piglet birth characteristics and intrapartum death. Litters from 26 Landrace-Yorkshire sows were monitored during farrowing and the status of each piglet was recorded, including blood parameters of piglets and their umbilical veins. Of 413 piglets born, 6.5% were stillborn. Blood concentrations of glucose, lactate, and CO2 partial pressure were increased in the stillborn piglets (P < 0.05) and corresponding umbilical veins (P < 0.01) vs. live-born piglets, whereas pH and base excess were decreased (P < 0.001). Time from onset of parturition until birth was increased for piglets born dead vs. live (P < 0.001). Mean birth weight for piglets born dead was not different from live-born piglets (P = 0.631), whereas mean body mass index was reduced (P < 0.001). Mean placental area and placental weight belonging to stillborn piglets were not different from live-born piglets (P = 0.662 and P = 0.253, respectively). Blood concentrations of lactate, hemoglobin, and hematocrit recorded in all piglets pooled were associated with placental area (P < 0.05), but not with placental weight (P > 0.2). Piglet BW was positively correlated with placental area and placental weight (P < 0.001). The risk of being born dead increased with increasing birth order group, and broken umbilical cords explained 71% of the stillbirths (P = 0.001). We conclude that placental area and placental weight are both positively associated with piglet birth weight, but not with the probability of being born dead. Placental area was a better predictor of piglet vitality than placental weight. Because umbilical cord rupture and prolonged birth time were associated with being born dead, umbilical cord rupture and placental detachment seem to be probable causes of intrapartum death." @default.
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- W2071239545 date "2012-12-01" @default.
- W2071239545 modified "2023-10-17" @default.
- W2071239545 title "Associations between intrapartum death and piglet, placental, and umbilical characteristics1" @default.
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- W2071239545 doi "https://doi.org/10.2527/jas.2012-5238" @default.
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