Postpartum clinicopathological and reproductive performance assessment and haptoglobin measurement of dairy cattle with retained fetal membrane
2020
Nakamura, M. | Miyamoto, T. | Camer, G.A. | Koyama, T. | Matsui, Y. | Sugiura, T. | Moriyoshi, M. | Nakada, K. | Sawamukai, Y.
Cattle with retained fetal membrane (RFM) interrupt optimal dairy productivity including reproductive performance. In this 28-mo duration experimental study, several clinical tests (observation of morbid clinical signs, rectal temperature, vaginal discharge scoring, and blood inflammatory marker measurements) were completed in 19 cattle with RFM including 8 cattle with normally expelled fetal membrane. Twelve out of 19 cattle showed morbid clinical signs at 2.2 ± 1.3 days postpartum (dpp) and pyrexia at 2.3 ± 1.7 dpp. All cattle with RFM had vaginal discharge scores of 1-3 (4-point scale) that steadily persisted for 2-8 wk postpartum. Lower conception rates were noted in cattle with RFM than in cattle with no RFM (64% vs. 100%). Blood haptoglobin (Hp) levels of cattle with RFM and with morbid clinical signs were consistently elevated from 1-10 d (all P 0.01). The Hp of test cattle for 3 d correlated with the 'days open' (Rs
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