Changes in Acute-Phase Proteins in Plasma during the Periparturient Period of Dairy Goats

Abstract

The present study was conducted regarding four acute-phase proteins (APPs) including C-reactive protein (CRP), ceruloplasmin (CP), serum amyloid A (SAA), and haptoglobin (HP) in dairy goats during the periparturient period. The aim of this study was to detect the changes in APPs in plasma during the periparturient period of healthy dairy goats. Guanzhong dairy goats with no other symptoms (n = 15) were selected on the basis of their blood calcium (Ca) and β-hydroxybutyrate (BHBA) concentration. The plasma was collected once a week for ±3 weeks delivery. The concentrations of the four APPs mentioned above were determined using goat-specific ELISA kits. The results showed the CRP level in plasma decreased from 3 weeks to 1 week antepartum and increased later until 1 week postpartum and then decreased to a similar level with antepartum between 1 and 3 weeks postpartum. The content of CP showed a decline in 3 weeks before parturition and an upward trend between 1 week antepartum and 3 weeks postpartum. The SAA concentration decreased from 3 weeks antepartum to 2 weeks postpartum and rebounded later. The level of HP decreased during 3 weeks before parturition and increased until 1 week postpartum, then reached a stable value. Clear variation range and rules of APPs contribute to perinatal health monitoring of dairy goats.